/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 15:22:33,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 15:22:33,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 15:22:33,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 15:22:33,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 15:22:33,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 15:22:33,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 15:22:33,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 15:22:33,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 15:22:33,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 15:22:33,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 15:22:33,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 15:22:33,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 15:22:33,519 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 15:22:33,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 15:22:33,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 15:22:33,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:22:33,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 15:22:33,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 15:22:33,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 15:22:33,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 15:22:33,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 15:22:33,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 15:22:33,728 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 15:22:33,728 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 15:22:33,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl [2022-03-15 15:22:33,730 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl' [2022-03-15 15:22:33,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 15:22:33,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 15:22:33,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 15:22:33,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 15:22:33,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 15:22:33,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,763 INFO L137 Inliner]: procedures = 2, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 15:22:33,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 15:22:33,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 15:22:33,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 15:22:33,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 15:22:33,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 15:22:33,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 15:22:33,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 15:22:33,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 15:22:33,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/1) ... [2022-03-15 15:22:33,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 15:22:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:33,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 15:22:33,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 15:22:33,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure mult given in one single declaration [2022-03-15 15:22:33,834 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-03-15 15:22:33,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-03-15 15:22:33,834 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 15:22:33,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 15:22:33,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 15:22:33,835 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 15:22:33,863 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 15:22:33,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 15:22:33,920 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 15:22:33,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 15:22:33,924 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 15:22:33,925 INFO L202 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:22:33 BoogieIcfgContainer [2022-03-15 15:22:33,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 15:22:33,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 15:22:33,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 15:22:33,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 15:22:33,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 03:22:33" (1/2) ... [2022-03-15 15:22:33,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173953a2 and model type concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 03:22:33, skipping insertion in model container [2022-03-15 15:22:33,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 03:22:33" (2/2) ... [2022-03-15 15:22:33,930 INFO L111 eAbstractionObserver]: Analyzing ICFG concurrent_mult.bpl [2022-03-15 15:22:33,934 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 15:22:33,934 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 15:22:33,934 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 15:22:33,934 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 15:22:33,949 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,949 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,949 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,950 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,950 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,950 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,950 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,950 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,950 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,951 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,951 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,951 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,951 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,951 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,951 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,952 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,952 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,952 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,952 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,952 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,953 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,953 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,953 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,953 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,953 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,953 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,954 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,954 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,954 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,954 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,954 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,954 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,955 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,955 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,955 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,955 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,955 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,956 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,956 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,956 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,956 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,956 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,956 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,957 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,973 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,974 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,976 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,976 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 15:22:33,977 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 15:22:34,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 15:22:34,048 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 15:22:34,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 15:22:34,060 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2022-03-15 15:22:34,109 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 68 states, 67 states have (on average 1.955223880597015) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 67 states have (on average 1.955223880597015) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 15:22:34,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:34,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:34,129 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1077425939, now seen corresponding path program 1 times [2022-03-15 15:22:34,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:34,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774517522] [2022-03-15 15:22:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:34,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:34,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:34,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774517522] [2022-03-15 15:22:34,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774517522] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:22:34,350 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:22:34,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 15:22:34,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178090526] [2022-03-15 15:22:34,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:22:34,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 15:22:34,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 15:22:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-15 15:22:34,398 INFO L87 Difference]: Start difference. First operand has 68 states, 67 states have (on average 1.955223880597015) internal successors, (131), 67 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:34,487 INFO L93 Difference]: Finished difference Result 115 states and 217 transitions. [2022-03-15 15:22:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 15:22:34,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 15:22:34,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:34,495 INFO L225 Difference]: With dead ends: 115 [2022-03-15 15:22:34,496 INFO L226 Difference]: Without dead ends: 112 [2022-03-15 15:22:34,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 15:22:34,503 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:34,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 115 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 15:22:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-03-15 15:22:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 77. [2022-03-15 15:22:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 76 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 147 transitions. [2022-03-15 15:22:34,562 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 147 transitions. Word has length 15 [2022-03-15 15:22:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:34,562 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 147 transitions. [2022-03-15 15:22:34,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 147 transitions. [2022-03-15 15:22:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 15:22:34,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:34,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:34,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 15:22:34,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:34,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash 219740701, now seen corresponding path program 2 times [2022-03-15 15:22:34,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:34,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65580170] [2022-03-15 15:22:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:34,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:34,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65580170] [2022-03-15 15:22:34,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65580170] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:22:34,632 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:22:34,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 15:22:34,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33904699] [2022-03-15 15:22:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:22:34,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 15:22:34,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 15:22:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-15 15:22:34,634 INFO L87 Difference]: Start difference. First operand 77 states and 147 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:34,703 INFO L93 Difference]: Finished difference Result 143 states and 275 transitions. [2022-03-15 15:22:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 15:22:34,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 15:22:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:34,705 INFO L225 Difference]: With dead ends: 143 [2022-03-15 15:22:34,705 INFO L226 Difference]: Without dead ends: 136 [2022-03-15 15:22:34,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 15:22:34,706 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:34,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 113 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 15:22:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-03-15 15:22:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 89. [2022-03-15 15:22:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.9659090909090908) internal successors, (173), 88 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 173 transitions. [2022-03-15 15:22:34,714 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 173 transitions. Word has length 15 [2022-03-15 15:22:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:34,714 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 173 transitions. [2022-03-15 15:22:34,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,714 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 173 transitions. [2022-03-15 15:22:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 15:22:34,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:34,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:34,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 15:22:34,715 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1754585729, now seen corresponding path program 3 times [2022-03-15 15:22:34,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:34,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565045801] [2022-03-15 15:22:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:34,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:34,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565045801] [2022-03-15 15:22:34,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565045801] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 15:22:34,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 15:22:34,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 15:22:34,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79673274] [2022-03-15 15:22:34,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 15:22:34,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 15:22:34,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:34,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 15:22:34,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-15 15:22:34,771 INFO L87 Difference]: Start difference. First operand 89 states and 173 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:34,828 INFO L93 Difference]: Finished difference Result 150 states and 292 transitions. [2022-03-15 15:22:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 15:22:34,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 15:22:34,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:34,830 INFO L225 Difference]: With dead ends: 150 [2022-03-15 15:22:34,830 INFO L226 Difference]: Without dead ends: 143 [2022-03-15 15:22:34,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 15:22:34,831 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:34,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 130 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 15:22:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-03-15 15:22:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 91. [2022-03-15 15:22:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.9666666666666666) internal successors, (177), 90 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 177 transitions. [2022-03-15 15:22:34,837 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 177 transitions. Word has length 15 [2022-03-15 15:22:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:34,838 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 177 transitions. [2022-03-15 15:22:34,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 177 transitions. [2022-03-15 15:22:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:34,839 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:34,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:34,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 15:22:34,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:34,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1395400251, now seen corresponding path program 1 times [2022-03-15 15:22:34,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:34,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794793039] [2022-03-15 15:22:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:34,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:34,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:34,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794793039] [2022-03-15 15:22:34,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794793039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:34,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290130610] [2022-03-15 15:22:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:34,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:34,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:34,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:34,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 15:22:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:34,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:35,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:35,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:35,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290130610] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:35,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:35,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-15 15:22:35,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19431199] [2022-03-15 15:22:35,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:35,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 15:22:35,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 15:22:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-03-15 15:22:35,494 INFO L87 Difference]: Start difference. First operand 91 states and 177 transitions. Second operand has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:36,565 INFO L93 Difference]: Finished difference Result 285 states and 534 transitions. [2022-03-15 15:22:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 15:22:36,565 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:36,568 INFO L225 Difference]: With dead ends: 285 [2022-03-15 15:22:36,568 INFO L226 Difference]: Without dead ends: 279 [2022-03-15 15:22:36,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=728, Invalid=2352, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 15:22:36,570 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 351 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:36,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 424 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-03-15 15:22:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 98. [2022-03-15 15:22:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 97 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 193 transitions. [2022-03-15 15:22:36,577 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 193 transitions. Word has length 18 [2022-03-15 15:22:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:36,577 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 193 transitions. [2022-03-15 15:22:36,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 193 transitions. [2022-03-15 15:22:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:36,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:36,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:36,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-15 15:22:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:36,800 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash 537715013, now seen corresponding path program 2 times [2022-03-15 15:22:36,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:36,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963588478] [2022-03-15 15:22:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:36,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:36,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963588478] [2022-03-15 15:22:36,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963588478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:36,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236424349] [2022-03-15 15:22:36,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:22:36,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:36,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:36,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:36,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 15:22:36,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:22:36,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:36,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:36,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:37,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:37,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236424349] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:37,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:37,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-15 15:22:37,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440826679] [2022-03-15 15:22:37,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:37,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 15:22:37,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:37,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 15:22:37,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-15 15:22:37,343 INFO L87 Difference]: Start difference. First operand 98 states and 193 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:38,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:38,440 INFO L93 Difference]: Finished difference Result 380 states and 710 transitions. [2022-03-15 15:22:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 15:22:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:38,449 INFO L225 Difference]: With dead ends: 380 [2022-03-15 15:22:38,449 INFO L226 Difference]: Without dead ends: 374 [2022-03-15 15:22:38,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=791, Invalid=2515, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 15:22:38,451 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 464 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:38,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 506 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-15 15:22:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 105. [2022-03-15 15:22:38,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.0096153846153846) internal successors, (209), 104 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:38,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 209 transitions. [2022-03-15 15:22:38,465 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 209 transitions. Word has length 18 [2022-03-15 15:22:38,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:38,465 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 209 transitions. [2022-03-15 15:22:38,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 209 transitions. [2022-03-15 15:22:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:38,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:38,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:38,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-15 15:22:38,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:38,687 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:38,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash 260658713, now seen corresponding path program 3 times [2022-03-15 15:22:38,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:38,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589031600] [2022-03-15 15:22:38,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:38,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:38,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:38,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589031600] [2022-03-15 15:22:38,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589031600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:38,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312658333] [2022-03-15 15:22:38,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:22:38,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:38,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:38,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:38,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 15:22:38,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:22:38,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:38,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:38,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:39,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:39,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312658333] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:39,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:39,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-15 15:22:39,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127291306] [2022-03-15 15:22:39,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:39,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 15:22:39,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:39,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 15:22:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-15 15:22:39,274 INFO L87 Difference]: Start difference. First operand 105 states and 209 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:40,423 INFO L93 Difference]: Finished difference Result 419 states and 801 transitions. [2022-03-15 15:22:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 15:22:40,423 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:40,425 INFO L225 Difference]: With dead ends: 419 [2022-03-15 15:22:40,425 INFO L226 Difference]: Without dead ends: 409 [2022-03-15 15:22:40,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=806, Invalid=2616, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 15:22:40,426 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 541 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:40,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 502 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-15 15:22:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 126. [2022-03-15 15:22:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.12) internal successors, (265), 125 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 265 transitions. [2022-03-15 15:22:40,432 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 265 transitions. Word has length 18 [2022-03-15 15:22:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:40,432 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 265 transitions. [2022-03-15 15:22:40,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:40,432 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 265 transitions. [2022-03-15 15:22:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:40,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:40,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:40,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 15:22:40,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:40,649 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:40,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:40,650 INFO L85 PathProgramCache]: Analyzing trace with hash -119562027, now seen corresponding path program 4 times [2022-03-15 15:22:40,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:40,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757526659] [2022-03-15 15:22:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:40,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:40,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:40,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757526659] [2022-03-15 15:22:40,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757526659] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:40,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454870846] [2022-03-15 15:22:40,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:22:40,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:40,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:40,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:40,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 15:22:40,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:22:40,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:40,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:40,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:40,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:41,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454870846] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:41,143 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:41,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-15 15:22:41,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965536354] [2022-03-15 15:22:41,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:41,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 15:22:41,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 15:22:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-03-15 15:22:41,144 INFO L87 Difference]: Start difference. First operand 126 states and 265 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:41,778 INFO L93 Difference]: Finished difference Result 361 states and 697 transitions. [2022-03-15 15:22:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 15:22:41,778 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:41,779 INFO L225 Difference]: With dead ends: 361 [2022-03-15 15:22:41,779 INFO L226 Difference]: Without dead ends: 337 [2022-03-15 15:22:41,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=600, Invalid=1950, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 15:22:41,780 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 236 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:41,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 576 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-03-15 15:22:41,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 145. [2022-03-15 15:22:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 2.1041666666666665) internal successors, (303), 144 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 303 transitions. [2022-03-15 15:22:41,785 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 303 transitions. Word has length 18 [2022-03-15 15:22:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:41,785 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 303 transitions. [2022-03-15 15:22:41,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 303 transitions. [2022-03-15 15:22:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:41,786 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:41,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:41,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-15 15:22:41,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:41,999 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash 384485672, now seen corresponding path program 1 times [2022-03-15 15:22:42,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:42,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900782042] [2022-03-15 15:22:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:42,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:42,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:42,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900782042] [2022-03-15 15:22:42,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900782042] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:42,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227571217] [2022-03-15 15:22:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:42,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:42,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:42,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:42,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 15:22:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:42,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:42,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:42,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:42,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227571217] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:42,479 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:42,479 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 15:22:42,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191501274] [2022-03-15 15:22:42,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:42,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:22:42,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:42,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:22:42,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:22:42,481 INFO L87 Difference]: Start difference. First operand 145 states and 303 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:42,710 INFO L93 Difference]: Finished difference Result 294 states and 580 transitions. [2022-03-15 15:22:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 15:22:42,711 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:42,712 INFO L225 Difference]: With dead ends: 294 [2022-03-15 15:22:42,712 INFO L226 Difference]: Without dead ends: 285 [2022-03-15 15:22:42,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 15:22:42,713 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 257 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:42,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 322 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:42,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-03-15 15:22:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 148. [2022-03-15 15:22:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.1020408163265305) internal successors, (309), 147 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 309 transitions. [2022-03-15 15:22:42,717 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 309 transitions. Word has length 18 [2022-03-15 15:22:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:42,718 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 309 transitions. [2022-03-15 15:22:42,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 309 transitions. [2022-03-15 15:22:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:42,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:42,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:42,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:42,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:42,934 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash -155995682, now seen corresponding path program 2 times [2022-03-15 15:22:42,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:42,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716358740] [2022-03-15 15:22:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:43,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:43,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716358740] [2022-03-15 15:22:43,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716358740] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:43,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986549958] [2022-03-15 15:22:43,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:22:43,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:43,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:43,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:43,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 15:22:43,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:22:43,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:43,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:43,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:43,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:43,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986549958] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:43,385 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:43,385 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 15:22:43,385 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036579880] [2022-03-15 15:22:43,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:43,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:22:43,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:22:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:22:43,386 INFO L87 Difference]: Start difference. First operand 148 states and 309 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:43,615 INFO L93 Difference]: Finished difference Result 307 states and 606 transitions. [2022-03-15 15:22:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 15:22:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:43,616 INFO L225 Difference]: With dead ends: 307 [2022-03-15 15:22:43,617 INFO L226 Difference]: Without dead ends: 283 [2022-03-15 15:22:43,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 15:22:43,617 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 175 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:43,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 391 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:43,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-03-15 15:22:43,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 146. [2022-03-15 15:22:43,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.103448275862069) internal successors, (305), 145 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 305 transitions. [2022-03-15 15:22:43,621 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 305 transitions. Word has length 18 [2022-03-15 15:22:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:43,621 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 305 transitions. [2022-03-15 15:22:43,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 305 transitions. [2022-03-15 15:22:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:43,622 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:43,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:43,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:43,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:43,860 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash 52297626, now seen corresponding path program 3 times [2022-03-15 15:22:43,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:43,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10979540] [2022-03-15 15:22:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:43,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:43,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:43,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10979540] [2022-03-15 15:22:43,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10979540] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:43,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108528201] [2022-03-15 15:22:43,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:22:43,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:43,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:43,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:43,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 15:22:43,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:22:43,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:43,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:43,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:44,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:44,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108528201] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:44,322 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:44,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-15 15:22:44,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723829110] [2022-03-15 15:22:44,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:44,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:22:44,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:22:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:22:44,324 INFO L87 Difference]: Start difference. First operand 146 states and 305 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:44,637 INFO L93 Difference]: Finished difference Result 321 states and 642 transitions. [2022-03-15 15:22:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 15:22:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:44,638 INFO L225 Difference]: With dead ends: 321 [2022-03-15 15:22:44,639 INFO L226 Difference]: Without dead ends: 299 [2022-03-15 15:22:44,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 15:22:44,639 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 236 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:44,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 315 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-03-15 15:22:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 151. [2022-03-15 15:22:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.1066666666666665) internal successors, (316), 150 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 316 transitions. [2022-03-15 15:22:44,649 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 316 transitions. Word has length 18 [2022-03-15 15:22:44,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:44,649 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 316 transitions. [2022-03-15 15:22:44,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 316 transitions. [2022-03-15 15:22:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:44,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:44,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:44,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:44,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:44,863 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1812350566, now seen corresponding path program 4 times [2022-03-15 15:22:44,864 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:44,864 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53335379] [2022-03-15 15:22:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:44,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:44,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53335379] [2022-03-15 15:22:44,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53335379] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:44,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247675500] [2022-03-15 15:22:44,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:22:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:44,968 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:44,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 15:22:44,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:22:44,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:44,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:44,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:45,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:45,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247675500] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:45,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:45,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-15 15:22:45,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293450472] [2022-03-15 15:22:45,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:45,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:22:45,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:22:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:22:45,321 INFO L87 Difference]: Start difference. First operand 151 states and 316 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:45,756 INFO L93 Difference]: Finished difference Result 336 states and 660 transitions. [2022-03-15 15:22:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 15:22:45,756 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:45,757 INFO L225 Difference]: With dead ends: 336 [2022-03-15 15:22:45,757 INFO L226 Difference]: Without dead ends: 307 [2022-03-15 15:22:45,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 15:22:45,758 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 237 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:45,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 482 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-03-15 15:22:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 173. [2022-03-15 15:22:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.116279069767442) internal successors, (364), 172 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 364 transitions. [2022-03-15 15:22:45,763 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 364 transitions. Word has length 18 [2022-03-15 15:22:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:45,763 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 364 transitions. [2022-03-15 15:22:45,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 364 transitions. [2022-03-15 15:22:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:45,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:45,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:45,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:45,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-15 15:22:45,964 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:45,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -674341312, now seen corresponding path program 5 times [2022-03-15 15:22:45,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:45,965 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342570634] [2022-03-15 15:22:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:46,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:46,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342570634] [2022-03-15 15:22:46,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342570634] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:46,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090969313] [2022-03-15 15:22:46,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:22:46,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:46,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:46,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 15:22:46,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:22:46,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:46,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:46,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:46,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:46,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090969313] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:46,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:46,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-03-15 15:22:46,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234737648] [2022-03-15 15:22:46,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:46,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 15:22:46,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 15:22:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-03-15 15:22:46,434 INFO L87 Difference]: Start difference. First operand 173 states and 364 transitions. Second operand has 26 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:47,155 INFO L93 Difference]: Finished difference Result 418 states and 823 transitions. [2022-03-15 15:22:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 15:22:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:47,157 INFO L225 Difference]: With dead ends: 418 [2022-03-15 15:22:47,157 INFO L226 Difference]: Without dead ends: 404 [2022-03-15 15:22:47,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=596, Invalid=1756, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 15:22:47,158 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 285 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:47,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 523 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-15 15:22:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 176. [2022-03-15 15:22:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.12) internal successors, (371), 175 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 371 transitions. [2022-03-15 15:22:47,163 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 371 transitions. Word has length 18 [2022-03-15 15:22:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:47,164 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 371 transitions. [2022-03-15 15:22:47,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 371 transitions. [2022-03-15 15:22:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:47,165 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:47,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:47,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:47,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:47,381 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash -515991736, now seen corresponding path program 6 times [2022-03-15 15:22:47,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:47,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897402216] [2022-03-15 15:22:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:47,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:47,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897402216] [2022-03-15 15:22:47,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897402216] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:47,467 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664989936] [2022-03-15 15:22:47,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:22:47,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:47,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:47,468 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:47,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 15:22:47,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:22:47,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:47,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:47,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:47,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:47,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664989936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:47,826 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:47,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 15:22:47,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236250857] [2022-03-15 15:22:47,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:47,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:22:47,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:22:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:22:47,827 INFO L87 Difference]: Start difference. First operand 176 states and 371 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:48,038 INFO L93 Difference]: Finished difference Result 289 states and 568 transitions. [2022-03-15 15:22:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:22:48,038 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:48,039 INFO L225 Difference]: With dead ends: 289 [2022-03-15 15:22:48,039 INFO L226 Difference]: Without dead ends: 280 [2022-03-15 15:22:48,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-03-15 15:22:48,040 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 234 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:48,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 453 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-15 15:22:48,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 178. [2022-03-15 15:22:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.1129943502824857) internal successors, (374), 177 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 374 transitions. [2022-03-15 15:22:48,043 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 374 transitions. Word has length 18 [2022-03-15 15:22:48,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:48,044 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 374 transitions. [2022-03-15 15:22:48,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:48,044 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 374 transitions. [2022-03-15 15:22:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:48,044 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:48,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:48,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:48,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 15:22:48,261 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:48,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:48,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1056473090, now seen corresponding path program 7 times [2022-03-15 15:22:48,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:48,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240115606] [2022-03-15 15:22:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:48,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:48,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240115606] [2022-03-15 15:22:48,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240115606] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:48,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77183149] [2022-03-15 15:22:48,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:22:48,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:48,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:48,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:48,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 15:22:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:48,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:48,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:48,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:48,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77183149] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:48,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:48,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 15:22:48,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986429980] [2022-03-15 15:22:48,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:48,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:22:48,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:22:48,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:22:48,695 INFO L87 Difference]: Start difference. First operand 178 states and 374 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:48,907 INFO L93 Difference]: Finished difference Result 302 states and 594 transitions. [2022-03-15 15:22:48,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:22:48,907 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:48,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:48,908 INFO L225 Difference]: With dead ends: 302 [2022-03-15 15:22:48,908 INFO L226 Difference]: Without dead ends: 278 [2022-03-15 15:22:48,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2022-03-15 15:22:48,909 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 264 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:48,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 422 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-15 15:22:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 176. [2022-03-15 15:22:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.1142857142857143) internal successors, (370), 175 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 370 transitions. [2022-03-15 15:22:48,913 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 370 transitions. Word has length 18 [2022-03-15 15:22:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:48,913 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 370 transitions. [2022-03-15 15:22:48,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 370 transitions. [2022-03-15 15:22:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:48,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:48,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:48,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:49,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 15:22:49,130 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash -848179782, now seen corresponding path program 8 times [2022-03-15 15:22:49,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:49,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373379314] [2022-03-15 15:22:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:49,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:49,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373379314] [2022-03-15 15:22:49,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373379314] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:49,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482368315] [2022-03-15 15:22:49,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:22:49,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:49,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:49,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:49,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 15:22:49,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:22:49,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:49,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:49,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:49,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:49,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482368315] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:49,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:49,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-15 15:22:49,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760617772] [2022-03-15 15:22:49,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:49,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:22:49,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:22:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:22:49,609 INFO L87 Difference]: Start difference. First operand 176 states and 370 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:49,920 INFO L93 Difference]: Finished difference Result 292 states and 580 transitions. [2022-03-15 15:22:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 15:22:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:49,922 INFO L225 Difference]: With dead ends: 292 [2022-03-15 15:22:49,922 INFO L226 Difference]: Without dead ends: 270 [2022-03-15 15:22:49,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 15:22:49,922 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 240 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:49,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 474 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:49,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-15 15:22:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 173. [2022-03-15 15:22:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 2.104651162790698) internal successors, (362), 172 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 362 transitions. [2022-03-15 15:22:49,926 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 362 transitions. Word has length 18 [2022-03-15 15:22:49,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:49,926 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 362 transitions. [2022-03-15 15:22:49,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 362 transitions. [2022-03-15 15:22:49,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:49,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:49,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:49,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:50,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 15:22:50,143 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2126537841, now seen corresponding path program 5 times [2022-03-15 15:22:50,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:50,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713647138] [2022-03-15 15:22:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:50,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:50,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713647138] [2022-03-15 15:22:50,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713647138] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:50,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099430571] [2022-03-15 15:22:50,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:22:50,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:50,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:50,237 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:50,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 15:22:50,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:22:50,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:50,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:50,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:50,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:50,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099430571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:50,554 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:50,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-15 15:22:50,555 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584631063] [2022-03-15 15:22:50,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:50,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 15:22:50,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 15:22:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-03-15 15:22:50,556 INFO L87 Difference]: Start difference. First operand 173 states and 362 transitions. Second operand has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:51,448 INFO L93 Difference]: Finished difference Result 521 states and 1015 transitions. [2022-03-15 15:22:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 15:22:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:51,450 INFO L225 Difference]: With dead ends: 521 [2022-03-15 15:22:51,450 INFO L226 Difference]: Without dead ends: 491 [2022-03-15 15:22:51,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=809, Invalid=2271, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 15:22:51,451 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 464 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:51,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 716 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-03-15 15:22:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 188. [2022-03-15 15:22:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.1550802139037435) internal successors, (403), 187 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 403 transitions. [2022-03-15 15:22:51,456 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 403 transitions. Word has length 18 [2022-03-15 15:22:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:51,456 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 403 transitions. [2022-03-15 15:22:51,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 403 transitions. [2022-03-15 15:22:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:51,456 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:51,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:51,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-15 15:22:51,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 15:22:51,672 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1103841132, now seen corresponding path program 9 times [2022-03-15 15:22:51,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:51,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114797997] [2022-03-15 15:22:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:51,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:51,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:51,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114797997] [2022-03-15 15:22:51,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114797997] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:51,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563334154] [2022-03-15 15:22:51,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:22:51,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:51,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:51,763 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:51,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 15:22:51,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:22:51,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:51,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:51,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:51,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:52,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563334154] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:52,096 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:52,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-15 15:22:52,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792894387] [2022-03-15 15:22:52,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:52,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 15:22:52,097 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:52,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 15:22:52,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-03-15 15:22:52,097 INFO L87 Difference]: Start difference. First operand 188 states and 403 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:52,225 INFO L93 Difference]: Finished difference Result 265 states and 534 transitions. [2022-03-15 15:22:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 15:22:52,225 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:52,226 INFO L225 Difference]: With dead ends: 265 [2022-03-15 15:22:52,226 INFO L226 Difference]: Without dead ends: 256 [2022-03-15 15:22:52,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2022-03-15 15:22:52,227 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 166 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:52,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 337 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-15 15:22:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 192. [2022-03-15 15:22:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.141361256544503) internal successors, (409), 191 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 409 transitions. [2022-03-15 15:22:52,231 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 409 transitions. Word has length 18 [2022-03-15 15:22:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:52,231 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 409 transitions. [2022-03-15 15:22:52,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 409 transitions. [2022-03-15 15:22:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:52,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:52,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:52,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:52,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:52,448 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash 563359778, now seen corresponding path program 10 times [2022-03-15 15:22:52,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:52,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214875663] [2022-03-15 15:22:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:52,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:52,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214875663] [2022-03-15 15:22:52,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214875663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:52,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827742325] [2022-03-15 15:22:52,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:22:52,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:52,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:52,531 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:52,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 15:22:52,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:22:52,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:52,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:52,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:52,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:52,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827742325] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:52,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:52,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-15 15:22:52,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103272574] [2022-03-15 15:22:52,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:52,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 15:22:52,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 15:22:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-03-15 15:22:52,825 INFO L87 Difference]: Start difference. First operand 192 states and 409 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:52,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:52,954 INFO L93 Difference]: Finished difference Result 255 states and 523 transitions. [2022-03-15 15:22:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 15:22:52,955 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:52,956 INFO L225 Difference]: With dead ends: 255 [2022-03-15 15:22:52,956 INFO L226 Difference]: Without dead ends: 229 [2022-03-15 15:22:52,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2022-03-15 15:22:52,956 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 177 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:52,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 365 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-03-15 15:22:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 188. [2022-03-15 15:22:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.1497326203208558) internal successors, (402), 187 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 402 transitions. [2022-03-15 15:22:52,960 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 402 transitions. Word has length 18 [2022-03-15 15:22:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:52,960 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 402 transitions. [2022-03-15 15:22:52,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 402 transitions. [2022-03-15 15:22:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:52,960 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:52,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:52,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-15 15:22:53,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 15:22:53,176 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1258539261, now seen corresponding path program 6 times [2022-03-15 15:22:53,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:53,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663741183] [2022-03-15 15:22:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:53,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:53,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663741183] [2022-03-15 15:22:53,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663741183] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:53,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797030780] [2022-03-15 15:22:53,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:22:53,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:53,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:53,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 15:22:53,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:22:53,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:53,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:53,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:53,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:53,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797030780] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:53,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:53,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-15 15:22:53,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817953471] [2022-03-15 15:22:53,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:53,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:22:53,593 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:53,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:22:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:22:53,593 INFO L87 Difference]: Start difference. First operand 188 states and 402 transitions. Second operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:54,369 INFO L93 Difference]: Finished difference Result 327 states and 651 transitions. [2022-03-15 15:22:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 15:22:54,369 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:54,370 INFO L225 Difference]: With dead ends: 327 [2022-03-15 15:22:54,370 INFO L226 Difference]: Without dead ends: 321 [2022-03-15 15:22:54,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=638, Invalid=1812, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 15:22:54,371 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 205 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:54,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 422 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-15 15:22:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 187. [2022-03-15 15:22:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.1559139784946235) internal successors, (401), 186 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 401 transitions. [2022-03-15 15:22:54,375 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 401 transitions. Word has length 18 [2022-03-15 15:22:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:54,375 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 401 transitions. [2022-03-15 15:22:54,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 401 transitions. [2022-03-15 15:22:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:54,375 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:54,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:54,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-15 15:22:54,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:54,594 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash 400854023, now seen corresponding path program 7 times [2022-03-15 15:22:54,594 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:54,594 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741988752] [2022-03-15 15:22:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:54,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:54,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:54,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741988752] [2022-03-15 15:22:54,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741988752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:54,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103533541] [2022-03-15 15:22:54,671 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:22:54,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:54,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:54,672 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:54,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 15:22:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:54,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:54,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:54,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:55,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103533541] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:55,030 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:55,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-15 15:22:55,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047527194] [2022-03-15 15:22:55,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:55,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 15:22:55,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 15:22:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-03-15 15:22:55,031 INFO L87 Difference]: Start difference. First operand 187 states and 401 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:55,845 INFO L93 Difference]: Finished difference Result 423 states and 831 transitions. [2022-03-15 15:22:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 15:22:55,845 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:55,847 INFO L225 Difference]: With dead ends: 423 [2022-03-15 15:22:55,847 INFO L226 Difference]: Without dead ends: 417 [2022-03-15 15:22:55,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=698, Invalid=1954, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 15:22:55,848 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 304 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:55,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 403 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-03-15 15:22:55,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 194. [2022-03-15 15:22:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.160621761658031) internal successors, (417), 193 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 417 transitions. [2022-03-15 15:22:55,852 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 417 transitions. Word has length 18 [2022-03-15 15:22:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:55,852 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 417 transitions. [2022-03-15 15:22:55,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 417 transitions. [2022-03-15 15:22:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:55,853 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:55,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:55,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:56,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:56,073 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:56,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 123797723, now seen corresponding path program 8 times [2022-03-15 15:22:56,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:56,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8499110] [2022-03-15 15:22:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:56,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:56,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8499110] [2022-03-15 15:22:56,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8499110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:56,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136767033] [2022-03-15 15:22:56,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:22:56,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:56,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:56,157 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:56,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 15:22:56,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:22:56,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:56,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:56,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:56,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:56,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136767033] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:56,504 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:56,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-15 15:22:56,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863139727] [2022-03-15 15:22:56,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:56,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 15:22:56,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 15:22:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-03-15 15:22:56,505 INFO L87 Difference]: Start difference. First operand 194 states and 417 transitions. Second operand has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:57,512 INFO L93 Difference]: Finished difference Result 479 states and 945 transitions. [2022-03-15 15:22:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 15:22:57,512 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:57,514 INFO L225 Difference]: With dead ends: 479 [2022-03-15 15:22:57,514 INFO L226 Difference]: Without dead ends: 469 [2022-03-15 15:22:57,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=827, Invalid=2365, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 15:22:57,515 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 340 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:57,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 539 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-03-15 15:22:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 198. [2022-03-15 15:22:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.197969543147208) internal successors, (433), 197 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:57,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 433 transitions. [2022-03-15 15:22:57,520 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 433 transitions. Word has length 18 [2022-03-15 15:22:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:57,520 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 433 transitions. [2022-03-15 15:22:57,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 433 transitions. [2022-03-15 15:22:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:57,520 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:57,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:57,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:57,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:57,733 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:57,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash -256423017, now seen corresponding path program 9 times [2022-03-15 15:22:57,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:57,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799374724] [2022-03-15 15:22:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:57,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:57,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:57,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799374724] [2022-03-15 15:22:57,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799374724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:57,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628964436] [2022-03-15 15:22:57,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:22:57,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:57,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:57,820 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:57,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 15:22:57,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:22:57,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:57,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:57,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:58,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:58,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628964436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:58,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:58,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-15 15:22:58,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532936503] [2022-03-15 15:22:58,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:58,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:22:58,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:58,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:22:58,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:22:58,172 INFO L87 Difference]: Start difference. First operand 198 states and 433 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:58,765 INFO L93 Difference]: Finished difference Result 414 states and 834 transitions. [2022-03-15 15:22:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 15:22:58,765 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:58,766 INFO L225 Difference]: With dead ends: 414 [2022-03-15 15:22:58,766 INFO L226 Difference]: Without dead ends: 390 [2022-03-15 15:22:58,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=487, Invalid=1405, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 15:22:58,767 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 256 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:58,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 496 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:22:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-15 15:22:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 206. [2022-03-15 15:22:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.180487804878049) internal successors, (447), 205 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 447 transitions. [2022-03-15 15:22:58,771 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 447 transitions. Word has length 18 [2022-03-15 15:22:58,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:58,771 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 447 transitions. [2022-03-15 15:22:58,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 447 transitions. [2022-03-15 15:22:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:58,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:58,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:58,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-03-15 15:22:58,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:58,988 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 247624682, now seen corresponding path program 11 times [2022-03-15 15:22:58,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:58,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939190614] [2022-03-15 15:22:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:59,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:59,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939190614] [2022-03-15 15:22:59,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939190614] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:59,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130433013] [2022-03-15 15:22:59,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:22:59,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:59,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:59,073 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:59,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 15:22:59,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:22:59,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:59,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:59,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:22:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:59,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:22:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:59,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130433013] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:22:59,351 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:22:59,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-15 15:22:59,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004651301] [2022-03-15 15:22:59,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:22:59,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 15:22:59,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:22:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 15:22:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-15 15:22:59,352 INFO L87 Difference]: Start difference. First operand 206 states and 447 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:22:59,548 INFO L93 Difference]: Finished difference Result 273 states and 568 transitions. [2022-03-15 15:22:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:22:59,548 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:22:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:22:59,549 INFO L225 Difference]: With dead ends: 273 [2022-03-15 15:22:59,549 INFO L226 Difference]: Without dead ends: 264 [2022-03-15 15:22:59,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2022-03-15 15:22:59,550 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 218 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:22:59,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 322 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:22:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-03-15 15:22:59,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 208. [2022-03-15 15:22:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.1739130434782608) internal successors, (450), 207 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 450 transitions. [2022-03-15 15:22:59,553 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 450 transitions. Word has length 18 [2022-03-15 15:22:59,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:22:59,554 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 450 transitions. [2022-03-15 15:22:59,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:22:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 450 transitions. [2022-03-15 15:22:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:22:59,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:22:59,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:22:59,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 15:22:59,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-15 15:22:59,771 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:22:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:22:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash -292856672, now seen corresponding path program 12 times [2022-03-15 15:22:59,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:22:59,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387744857] [2022-03-15 15:22:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:22:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:22:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:22:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:22:59,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:22:59,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387744857] [2022-03-15 15:22:59,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387744857] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:22:59,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677739007] [2022-03-15 15:22:59,869 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:22:59,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:22:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:22:59,870 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:22:59,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 15:22:59,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:22:59,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:22:59,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:22:59,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:00,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:00,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677739007] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:00,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:00,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-15 15:23:00,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617400696] [2022-03-15 15:23:00,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:00,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 15:23:00,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 15:23:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-03-15 15:23:00,202 INFO L87 Difference]: Start difference. First operand 208 states and 450 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:00,419 INFO L93 Difference]: Finished difference Result 286 states and 594 transitions. [2022-03-15 15:23:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 15:23:00,419 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:00,420 INFO L225 Difference]: With dead ends: 286 [2022-03-15 15:23:00,420 INFO L226 Difference]: Without dead ends: 262 [2022-03-15 15:23:00,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2022-03-15 15:23:00,421 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 143 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:00,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 325 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:00,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-03-15 15:23:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 206. [2022-03-15 15:23:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.175609756097561) internal successors, (446), 205 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 446 transitions. [2022-03-15 15:23:00,424 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 446 transitions. Word has length 18 [2022-03-15 15:23:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:00,424 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 446 transitions. [2022-03-15 15:23:00,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 446 transitions. [2022-03-15 15:23:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:00,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:00,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:00,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:00,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-03-15 15:23:00,639 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:00,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash -84563364, now seen corresponding path program 13 times [2022-03-15 15:23:00,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:00,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422727578] [2022-03-15 15:23:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:00,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:00,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422727578] [2022-03-15 15:23:00,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422727578] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:00,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666421871] [2022-03-15 15:23:00,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:23:00,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:00,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:00,725 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:00,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 15:23:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:00,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:00,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:00,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:01,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666421871] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:01,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:01,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 15:23:01,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597427276] [2022-03-15 15:23:01,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:01,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:23:01,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:23:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:23:01,044 INFO L87 Difference]: Start difference. First operand 206 states and 446 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:01,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:01,346 INFO L93 Difference]: Finished difference Result 300 states and 630 transitions. [2022-03-15 15:23:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 15:23:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:01,347 INFO L225 Difference]: With dead ends: 300 [2022-03-15 15:23:01,347 INFO L226 Difference]: Without dead ends: 278 [2022-03-15 15:23:01,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 15:23:01,348 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 176 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:01,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 411 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-15 15:23:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 207. [2022-03-15 15:23:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.174757281553398) internal successors, (448), 206 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 448 transitions. [2022-03-15 15:23:01,351 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 448 transitions. Word has length 18 [2022-03-15 15:23:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:01,352 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 448 transitions. [2022-03-15 15:23:01,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 448 transitions. [2022-03-15 15:23:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:01,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:01,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:01,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:01,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:01,566 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1675489576, now seen corresponding path program 14 times [2022-03-15 15:23:01,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:01,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008369352] [2022-03-15 15:23:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:01,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:01,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008369352] [2022-03-15 15:23:01,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008369352] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:01,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225207568] [2022-03-15 15:23:01,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:23:01,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:01,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:01,679 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:01,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 15:23:01,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:23:01,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:01,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:01,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:01,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:01,992 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225207568] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:01,992 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:01,992 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 15:23:01,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376831679] [2022-03-15 15:23:01,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:01,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:23:01,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:23:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:23:01,993 INFO L87 Difference]: Start difference. First operand 207 states and 448 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:02,501 INFO L93 Difference]: Finished difference Result 386 states and 786 transitions. [2022-03-15 15:23:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 15:23:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:02,503 INFO L225 Difference]: With dead ends: 386 [2022-03-15 15:23:02,503 INFO L226 Difference]: Without dead ends: 357 [2022-03-15 15:23:02,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=418, Invalid=1222, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 15:23:02,503 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 244 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:02,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 504 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:23:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-15 15:23:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 221. [2022-03-15 15:23:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.1818181818181817) internal successors, (480), 220 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 480 transitions. [2022-03-15 15:23:02,507 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 480 transitions. Word has length 18 [2022-03-15 15:23:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:02,507 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 480 transitions. [2022-03-15 15:23:02,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 480 transitions. [2022-03-15 15:23:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:02,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:02,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:02,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:02,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:02,724 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:02,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:02,725 INFO L85 PathProgramCache]: Analyzing trace with hash -811202302, now seen corresponding path program 15 times [2022-03-15 15:23:02,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:02,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432162501] [2022-03-15 15:23:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:02,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:02,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:02,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432162501] [2022-03-15 15:23:02,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432162501] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:02,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147646232] [2022-03-15 15:23:02,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:23:02,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:02,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:02,809 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:02,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 15:23:02,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:23:02,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:02,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:02,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:02,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:03,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147646232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:03,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:03,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-15 15:23:03,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002093092] [2022-03-15 15:23:03,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:03,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:23:03,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:23:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:23:03,170 INFO L87 Difference]: Start difference. First operand 221 states and 480 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:03,640 INFO L93 Difference]: Finished difference Result 385 states and 789 transitions. [2022-03-15 15:23:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 15:23:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:03,641 INFO L225 Difference]: With dead ends: 385 [2022-03-15 15:23:03,641 INFO L226 Difference]: Without dead ends: 371 [2022-03-15 15:23:03,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 15:23:03,642 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 240 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:03,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 414 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:03,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-15 15:23:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 205. [2022-03-15 15:23:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 2.1666666666666665) internal successors, (442), 204 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 442 transitions. [2022-03-15 15:23:03,646 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 442 transitions. Word has length 18 [2022-03-15 15:23:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:03,646 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 442 transitions. [2022-03-15 15:23:03,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:03,646 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 442 transitions. [2022-03-15 15:23:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:03,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:03,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:03,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:03,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 15:23:03,861 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1079863165, now seen corresponding path program 10 times [2022-03-15 15:23:03,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:03,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146778590] [2022-03-15 15:23:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:03,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:03,942 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:03,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146778590] [2022-03-15 15:23:03,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146778590] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:03,942 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171291355] [2022-03-15 15:23:03,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:23:03,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:03,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:03,943 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:03,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 15:23:03,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:23:03,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:03,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:03,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:04,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:04,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171291355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:04,291 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:04,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-15 15:23:04,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131982435] [2022-03-15 15:23:04,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:04,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 15:23:04,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 15:23:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-15 15:23:04,292 INFO L87 Difference]: Start difference. First operand 205 states and 442 transitions. Second operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:04,909 INFO L93 Difference]: Finished difference Result 334 states and 673 transitions. [2022-03-15 15:23:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 15:23:04,909 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:04,910 INFO L225 Difference]: With dead ends: 334 [2022-03-15 15:23:04,910 INFO L226 Difference]: Without dead ends: 328 [2022-03-15 15:23:04,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=609, Invalid=1647, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:04,911 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 240 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:04,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 417 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:04,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-15 15:23:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 204. [2022-03-15 15:23:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.1724137931034484) internal successors, (441), 203 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 441 transitions. [2022-03-15 15:23:04,915 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 441 transitions. Word has length 18 [2022-03-15 15:23:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:04,915 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 441 transitions. [2022-03-15 15:23:04,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 441 transitions. [2022-03-15 15:23:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:04,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:04,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:04,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-15 15:23:05,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 15:23:05,132 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1356919465, now seen corresponding path program 11 times [2022-03-15 15:23:05,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:05,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963489701] [2022-03-15 15:23:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:05,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:05,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:05,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963489701] [2022-03-15 15:23:05,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963489701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:05,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471355614] [2022-03-15 15:23:05,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:23:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:05,219 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:05,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 15:23:05,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:23:05,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:05,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:05,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:05,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:05,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471355614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:05,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:05,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-15 15:23:05,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234891145] [2022-03-15 15:23:05,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:05,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 15:23:05,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 15:23:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-03-15 15:23:05,607 INFO L87 Difference]: Start difference. First operand 204 states and 441 transitions. Second operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:06,359 INFO L93 Difference]: Finished difference Result 437 states and 877 transitions. [2022-03-15 15:23:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 15:23:06,359 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:06,361 INFO L225 Difference]: With dead ends: 437 [2022-03-15 15:23:06,361 INFO L226 Difference]: Without dead ends: 423 [2022-03-15 15:23:06,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=775, Invalid=1981, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 15:23:06,362 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 363 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:06,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 457 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:06,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-15 15:23:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 212. [2022-03-15 15:23:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.2085308056872037) internal successors, (466), 211 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 466 transitions. [2022-03-15 15:23:06,375 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 466 transitions. Word has length 18 [2022-03-15 15:23:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:06,375 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 466 transitions. [2022-03-15 15:23:06,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 466 transitions. [2022-03-15 15:23:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:06,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:06,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:06,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-15 15:23:06,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 15:23:06,583 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1058776395, now seen corresponding path program 12 times [2022-03-15 15:23:06,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:06,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069970568] [2022-03-15 15:23:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:06,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:06,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069970568] [2022-03-15 15:23:06,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069970568] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:06,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247163879] [2022-03-15 15:23:06,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:23:06,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:06,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:06,684 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:06,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 15:23:06,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:23:06,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:06,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:06,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:06,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:07,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247163879] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:07,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:07,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-15 15:23:07,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889548185] [2022-03-15 15:23:07,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:07,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:23:07,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:23:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:23:07,035 INFO L87 Difference]: Start difference. First operand 212 states and 466 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:07,486 INFO L93 Difference]: Finished difference Result 377 states and 771 transitions. [2022-03-15 15:23:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 15:23:07,486 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:07,487 INFO L225 Difference]: With dead ends: 377 [2022-03-15 15:23:07,487 INFO L226 Difference]: Without dead ends: 353 [2022-03-15 15:23:07,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=478, Invalid=1244, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 15:23:07,488 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 223 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:07,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 441 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:07,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-15 15:23:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 212. [2022-03-15 15:23:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.1943127962085307) internal successors, (463), 211 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 463 transitions. [2022-03-15 15:23:07,492 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 463 transitions. Word has length 18 [2022-03-15 15:23:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:07,492 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 463 transitions. [2022-03-15 15:23:07,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 463 transitions. [2022-03-15 15:23:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:07,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:07,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:07,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:07,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:07,705 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:07,706 INFO L85 PathProgramCache]: Analyzing trace with hash 190400250, now seen corresponding path program 16 times [2022-03-15 15:23:07,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:07,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839230099] [2022-03-15 15:23:07,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:07,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:07,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:07,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839230099] [2022-03-15 15:23:07,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839230099] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:07,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733253284] [2022-03-15 15:23:07,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:23:07,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:07,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:07,807 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:07,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 15:23:07,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:23:07,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:07,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:07,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:07,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:08,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733253284] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:08,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:08,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-15 15:23:08,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084727432] [2022-03-15 15:23:08,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:08,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:23:08,120 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:23:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:23:08,121 INFO L87 Difference]: Start difference. First operand 212 states and 463 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:08,605 INFO L93 Difference]: Finished difference Result 381 states and 774 transitions. [2022-03-15 15:23:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 15:23:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:08,606 INFO L225 Difference]: With dead ends: 381 [2022-03-15 15:23:08,606 INFO L226 Difference]: Without dead ends: 356 [2022-03-15 15:23:08,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 15:23:08,607 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 232 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:08,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 394 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-15 15:23:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 227. [2022-03-15 15:23:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 2.1991150442477876) internal successors, (497), 226 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 497 transitions. [2022-03-15 15:23:08,611 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 497 transitions. Word has length 18 [2022-03-15 15:23:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:08,611 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 497 transitions. [2022-03-15 15:23:08,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 497 transitions. [2022-03-15 15:23:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:08,611 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:08,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:08,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:08,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:08,812 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1998675668, now seen corresponding path program 17 times [2022-03-15 15:23:08,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:08,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548350555] [2022-03-15 15:23:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:08,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:08,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548350555] [2022-03-15 15:23:08,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548350555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:08,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881409005] [2022-03-15 15:23:08,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:23:08,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:08,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:08,900 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:08,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 15:23:08,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:23:08,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:08,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:08,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:09,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:09,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881409005] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:09,237 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:09,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-15 15:23:09,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064661719] [2022-03-15 15:23:09,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:09,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:23:09,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:09,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:23:09,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:23:09,238 INFO L87 Difference]: Start difference. First operand 227 states and 497 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:09,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:09,791 INFO L93 Difference]: Finished difference Result 384 states and 785 transitions. [2022-03-15 15:23:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 15:23:09,791 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:09,792 INFO L225 Difference]: With dead ends: 384 [2022-03-15 15:23:09,792 INFO L226 Difference]: Without dead ends: 370 [2022-03-15 15:23:09,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 15:23:09,793 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 273 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:09,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 412 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-15 15:23:09,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 221. [2022-03-15 15:23:09,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.209090909090909) internal successors, (486), 220 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 486 transitions. [2022-03-15 15:23:09,797 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 486 transitions. Word has length 18 [2022-03-15 15:23:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:09,797 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 486 transitions. [2022-03-15 15:23:09,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 486 transitions. [2022-03-15 15:23:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:09,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:09,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:09,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:10,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:10,013 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:10,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1044229949, now seen corresponding path program 13 times [2022-03-15 15:23:10,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:10,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039317873] [2022-03-15 15:23:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:10,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:10,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:10,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039317873] [2022-03-15 15:23:10,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039317873] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:10,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174711630] [2022-03-15 15:23:10,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:23:10,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:10,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:10,091 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:10,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 15:23:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:10,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:10,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:10,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:10,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174711630] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:10,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:10,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-15 15:23:10,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067695184] [2022-03-15 15:23:10,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:10,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 15:23:10,457 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 15:23:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-03-15 15:23:10,458 INFO L87 Difference]: Start difference. First operand 221 states and 486 transitions. Second operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:10,912 INFO L93 Difference]: Finished difference Result 322 states and 671 transitions. [2022-03-15 15:23:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 15:23:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:10,913 INFO L225 Difference]: With dead ends: 322 [2022-03-15 15:23:10,913 INFO L226 Difference]: Without dead ends: 315 [2022-03-15 15:23:10,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=1226, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 15:23:10,914 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 193 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:10,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 616 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-03-15 15:23:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2022-03-15 15:23:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.2242152466367715) internal successors, (496), 223 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 496 transitions. [2022-03-15 15:23:10,918 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 496 transitions. Word has length 18 [2022-03-15 15:23:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:10,918 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 496 transitions. [2022-03-15 15:23:10,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 496 transitions. [2022-03-15 15:23:10,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:10,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:10,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:10,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:11,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-03-15 15:23:11,131 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1558502009, now seen corresponding path program 14 times [2022-03-15 15:23:11,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:11,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23020869] [2022-03-15 15:23:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:11,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:11,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23020869] [2022-03-15 15:23:11,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23020869] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:11,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394289893] [2022-03-15 15:23:11,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:23:11,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:11,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:11,209 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:11,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 15:23:11,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:23:11,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:11,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:11,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:11,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:11,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394289893] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:11,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:11,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-15 15:23:11,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455978406] [2022-03-15 15:23:11,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:11,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 15:23:11,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 15:23:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-03-15 15:23:11,528 INFO L87 Difference]: Start difference. First operand 224 states and 496 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:11,815 INFO L93 Difference]: Finished difference Result 329 states and 685 transitions. [2022-03-15 15:23:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 15:23:11,815 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:11,816 INFO L225 Difference]: With dead ends: 329 [2022-03-15 15:23:11,816 INFO L226 Difference]: Without dead ends: 304 [2022-03-15 15:23:11,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 15:23:11,817 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 204 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:11,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 404 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-15 15:23:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 232. [2022-03-15 15:23:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.207792207792208) internal successors, (510), 231 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 510 transitions. [2022-03-15 15:23:11,821 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 510 transitions. Word has length 18 [2022-03-15 15:23:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:11,821 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 510 transitions. [2022-03-15 15:23:11,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 510 transitions. [2022-03-15 15:23:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 15:23:11,821 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:11,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:11,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-15 15:23:12,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:12,037 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:12,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:12,038 INFO L85 PathProgramCache]: Analyzing trace with hash -505252739, now seen corresponding path program 15 times [2022-03-15 15:23:12,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:12,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928615747] [2022-03-15 15:23:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:12,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:12,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928615747] [2022-03-15 15:23:12,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928615747] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:12,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050724883] [2022-03-15 15:23:12,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:23:12,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:12,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:12,126 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:12,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 15:23:12,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:23:12,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:12,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 15:23:12,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:12,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:12,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050724883] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:12,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:12,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-03-15 15:23:12,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726544920] [2022-03-15 15:23:12,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:12,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 15:23:12,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 15:23:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-03-15 15:23:12,425 INFO L87 Difference]: Start difference. First operand 232 states and 510 transitions. Second operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:12,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:12,664 INFO L93 Difference]: Finished difference Result 285 states and 602 transitions. [2022-03-15 15:23:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 15:23:12,665 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 15:23:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:12,665 INFO L225 Difference]: With dead ends: 285 [2022-03-15 15:23:12,666 INFO L226 Difference]: Without dead ends: 266 [2022-03-15 15:23:12,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 15:23:12,666 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 159 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:12,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 428 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 15:23:12,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-03-15 15:23:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 232. [2022-03-15 15:23:12,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.2034632034632033) internal successors, (509), 231 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 509 transitions. [2022-03-15 15:23:12,669 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 509 transitions. Word has length 18 [2022-03-15 15:23:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:12,669 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 509 transitions. [2022-03-15 15:23:12,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 509 transitions. [2022-03-15 15:23:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:12,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:12,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:12,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:12,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:12,870 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1671790291, now seen corresponding path program 16 times [2022-03-15 15:23:12,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:12,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536481945] [2022-03-15 15:23:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:12,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:12,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:12,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536481945] [2022-03-15 15:23:12,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536481945] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:12,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575141125] [2022-03-15 15:23:12,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:23:12,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:12,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:12,985 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:12,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 15:23:13,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:23:13,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:13,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 15:23:13,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:13,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:13,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575141125] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:13,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:13,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-03-15 15:23:13,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147149505] [2022-03-15 15:23:13,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:13,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 15:23:13,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 15:23:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2022-03-15 15:23:13,513 INFO L87 Difference]: Start difference. First operand 232 states and 509 transitions. Second operand has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:15,094 INFO L93 Difference]: Finished difference Result 668 states and 1344 transitions. [2022-03-15 15:23:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 15:23:15,094 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:15,096 INFO L225 Difference]: With dead ends: 668 [2022-03-15 15:23:15,096 INFO L226 Difference]: Without dead ends: 641 [2022-03-15 15:23:15,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=976, Invalid=3184, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 15:23:15,097 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 449 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:15,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 851 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 15:23:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-03-15 15:23:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 228. [2022-03-15 15:23:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 2.198237885462555) internal successors, (499), 227 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 499 transitions. [2022-03-15 15:23:15,101 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 499 transitions. Word has length 21 [2022-03-15 15:23:15,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:15,102 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 499 transitions. [2022-03-15 15:23:15,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 499 transitions. [2022-03-15 15:23:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:15,102 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:15,102 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:15,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-15 15:23:15,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-15 15:23:15,315 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:15,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1728684205, now seen corresponding path program 17 times [2022-03-15 15:23:15,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:15,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140651577] [2022-03-15 15:23:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:15,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:15,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140651577] [2022-03-15 15:23:15,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140651577] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:15,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872606724] [2022-03-15 15:23:15,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:23:15,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:15,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:15,415 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:15,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 15:23:15,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:23:15,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:15,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 15:23:15,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:15,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:15,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872606724] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:15,903 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:15,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-03-15 15:23:15,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531722139] [2022-03-15 15:23:15,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:15,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 15:23:15,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:15,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 15:23:15,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-03-15 15:23:15,904 INFO L87 Difference]: Start difference. First operand 228 states and 499 transitions. Second operand has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:16,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:16,887 INFO L93 Difference]: Finished difference Result 523 states and 1049 transitions. [2022-03-15 15:23:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 15:23:16,887 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:16,888 INFO L225 Difference]: With dead ends: 523 [2022-03-15 15:23:16,888 INFO L226 Difference]: Without dead ends: 493 [2022-03-15 15:23:16,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=669, Invalid=2301, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 15:23:16,889 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 433 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:16,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 602 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 15:23:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-15 15:23:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 241. [2022-03-15 15:23:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.225) internal successors, (534), 240 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 534 transitions. [2022-03-15 15:23:16,893 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 534 transitions. Word has length 21 [2022-03-15 15:23:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:16,894 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 534 transitions. [2022-03-15 15:23:16,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.896551724137931) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 534 transitions. [2022-03-15 15:23:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:16,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:16,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:16,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:17,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-15 15:23:17,110 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:17,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1540640512, now seen corresponding path program 1 times [2022-03-15 15:23:17,111 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:17,111 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091415456] [2022-03-15 15:23:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:17,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:17,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091415456] [2022-03-15 15:23:17,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091415456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:17,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138121512] [2022-03-15 15:23:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:17,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:17,295 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:17,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 15:23:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:17,315 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:17,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:17,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:18,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138121512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:18,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:18,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:18,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663227448] [2022-03-15 15:23:18,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:18,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:18,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:18,258 INFO L87 Difference]: Start difference. First operand 241 states and 534 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:20,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:20,883 INFO L93 Difference]: Finished difference Result 486 states and 945 transitions. [2022-03-15 15:23:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 15:23:20,884 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:20,885 INFO L225 Difference]: With dead ends: 486 [2022-03-15 15:23:20,885 INFO L226 Difference]: Without dead ends: 480 [2022-03-15 15:23:20,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1398, Invalid=9108, Unknown=0, NotChecked=0, Total=10506 [2022-03-15 15:23:20,886 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 390 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:20,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 800 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:23:20,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-03-15 15:23:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 251. [2022-03-15 15:23:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 2.204) internal successors, (551), 250 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 551 transitions. [2022-03-15 15:23:20,890 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 551 transitions. Word has length 21 [2022-03-15 15:23:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:20,890 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 551 transitions. [2022-03-15 15:23:20,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 551 transitions. [2022-03-15 15:23:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:20,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:20,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:20,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:21,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-15 15:23:21,104 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:21,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:21,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2081121866, now seen corresponding path program 2 times [2022-03-15 15:23:21,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:21,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444699504] [2022-03-15 15:23:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:21,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:21,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444699504] [2022-03-15 15:23:21,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444699504] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:21,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155125051] [2022-03-15 15:23:21,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:23:21,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:21,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:21,294 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:21,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 15:23:21,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:23:21,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:21,313 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:21,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:21,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:22,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155125051] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:22,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:22,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:22,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608832631] [2022-03-15 15:23:22,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:22,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:22,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:22,261 INFO L87 Difference]: Start difference. First operand 251 states and 551 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:24,825 INFO L93 Difference]: Finished difference Result 502 states and 967 transitions. [2022-03-15 15:23:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 15:23:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:24,831 INFO L225 Difference]: With dead ends: 502 [2022-03-15 15:23:24,831 INFO L226 Difference]: Without dead ends: 496 [2022-03-15 15:23:24,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1338, Invalid=9168, Unknown=0, NotChecked=0, Total=10506 [2022-03-15 15:23:24,832 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 510 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:24,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 635 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 15:23:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-03-15 15:23:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 253. [2022-03-15 15:23:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.2023809523809526) internal successors, (555), 252 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 555 transitions. [2022-03-15 15:23:24,837 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 555 transitions. Word has length 21 [2022-03-15 15:23:24,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:24,837 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 555 transitions. [2022-03-15 15:23:24,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 555 transitions. [2022-03-15 15:23:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:24,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:24,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:24,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-15 15:23:25,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-15 15:23:25,054 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:25,055 INFO L85 PathProgramCache]: Analyzing trace with hash -938212254, now seen corresponding path program 3 times [2022-03-15 15:23:25,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:25,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327256384] [2022-03-15 15:23:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:25,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:25,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:25,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327256384] [2022-03-15 15:23:25,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327256384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:25,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481825336] [2022-03-15 15:23:25,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:23:25,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:25,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:25,254 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:25,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 15:23:25,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:23:25,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:25,274 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:25,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:25,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:26,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481825336] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:26,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:26,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:26,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269082631] [2022-03-15 15:23:26,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:26,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:26,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:26,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:26,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2060, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:26,186 INFO L87 Difference]: Start difference. First operand 253 states and 555 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:29,278 INFO L93 Difference]: Finished difference Result 517 states and 1004 transitions. [2022-03-15 15:23:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 15:23:29,278 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:29,280 INFO L225 Difference]: With dead ends: 517 [2022-03-15 15:23:29,280 INFO L226 Difference]: Without dead ends: 511 [2022-03-15 15:23:29,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1517, Invalid=10473, Unknown=0, NotChecked=0, Total=11990 [2022-03-15 15:23:29,281 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 412 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:29,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 913 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:23:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-03-15 15:23:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 255. [2022-03-15 15:23:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 2.2007874015748032) internal successors, (559), 254 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 559 transitions. [2022-03-15 15:23:29,285 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 559 transitions. Word has length 21 [2022-03-15 15:23:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:29,285 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 559 transitions. [2022-03-15 15:23:29,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 559 transitions. [2022-03-15 15:23:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:29,286 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:29,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:29,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:29,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-15 15:23:29,487 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -46037548, now seen corresponding path program 4 times [2022-03-15 15:23:29,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:29,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598054924] [2022-03-15 15:23:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:29,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:29,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598054924] [2022-03-15 15:23:29,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598054924] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:29,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432426994] [2022-03-15 15:23:29,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:23:29,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:29,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:29,674 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:29,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 15:23:29,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:23:29,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:29,692 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:29,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:30,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:30,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432426994] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:30,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:30,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:30,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471710001] [2022-03-15 15:23:30,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:30,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:30,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:30,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:30,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:30,582 INFO L87 Difference]: Start difference. First operand 255 states and 559 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:33,125 INFO L93 Difference]: Finished difference Result 517 states and 1006 transitions. [2022-03-15 15:23:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 15:23:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:33,126 INFO L225 Difference]: With dead ends: 517 [2022-03-15 15:23:33,126 INFO L226 Difference]: Without dead ends: 511 [2022-03-15 15:23:33,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1295, Invalid=8805, Unknown=0, NotChecked=0, Total=10100 [2022-03-15 15:23:33,127 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 405 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:33,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 888 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:23:33,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-03-15 15:23:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 257. [2022-03-15 15:23:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.19921875) internal successors, (563), 256 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 563 transitions. [2022-03-15 15:23:33,132 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 563 transitions. Word has length 21 [2022-03-15 15:23:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:33,132 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 563 transitions. [2022-03-15 15:23:33,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 563 transitions. [2022-03-15 15:23:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:33,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:33,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:33,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:33,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-15 15:23:33,348 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1901720112, now seen corresponding path program 5 times [2022-03-15 15:23:33,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:33,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028103958] [2022-03-15 15:23:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:33,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:33,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:33,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028103958] [2022-03-15 15:23:33,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028103958] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:33,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969118117] [2022-03-15 15:23:33,523 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:23:33,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:33,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:33,524 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:33,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 15:23:33,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:23:33,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:33,542 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:33,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:33,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:34,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969118117] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:34,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:34,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:34,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344727945] [2022-03-15 15:23:34,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:34,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:34,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:34,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:34,469 INFO L87 Difference]: Start difference. First operand 257 states and 563 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:38,232 INFO L93 Difference]: Finished difference Result 573 states and 1108 transitions. [2022-03-15 15:23:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-15 15:23:38,232 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:38,234 INFO L225 Difference]: With dead ends: 573 [2022-03-15 15:23:38,234 INFO L226 Difference]: Without dead ends: 567 [2022-03-15 15:23:38,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4388 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2056, Invalid=13694, Unknown=0, NotChecked=0, Total=15750 [2022-03-15 15:23:38,235 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 514 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:38,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1055 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:23:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-03-15 15:23:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 265. [2022-03-15 15:23:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.2007575757575757) internal successors, (581), 264 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 581 transitions. [2022-03-15 15:23:38,239 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 581 transitions. Word has length 21 [2022-03-15 15:23:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:38,239 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 581 transitions. [2022-03-15 15:23:38,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 581 transitions. [2022-03-15 15:23:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:38,240 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:38,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:38,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-15 15:23:38,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-15 15:23:38,456 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1909042932, now seen corresponding path program 6 times [2022-03-15 15:23:38,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:38,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59032884] [2022-03-15 15:23:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:38,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:38,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:38,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59032884] [2022-03-15 15:23:38,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59032884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:38,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077206587] [2022-03-15 15:23:38,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:23:38,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:38,647 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:38,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 15:23:38,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:23:38,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:38,665 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:38,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:39,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:39,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077206587] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:39,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:39,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:23:39,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885703839] [2022-03-15 15:23:39,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:39,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:23:39,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:39,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:23:39,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:23:39,518 INFO L87 Difference]: Start difference. First operand 265 states and 581 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:42,302 INFO L93 Difference]: Finished difference Result 586 states and 1145 transitions. [2022-03-15 15:23:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 15:23:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:42,304 INFO L225 Difference]: With dead ends: 586 [2022-03-15 15:23:42,304 INFO L226 Difference]: Without dead ends: 572 [2022-03-15 15:23:42,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1666, Invalid=10990, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 15:23:42,305 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 466 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:42,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 908 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:23:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-15 15:23:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 265. [2022-03-15 15:23:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.1931818181818183) internal successors, (579), 264 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:42,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 579 transitions. [2022-03-15 15:23:42,310 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 579 transitions. Word has length 21 [2022-03-15 15:23:42,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:42,310 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 579 transitions. [2022-03-15 15:23:42,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 579 transitions. [2022-03-15 15:23:42,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:42,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:42,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:42,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:42,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-15 15:23:42,526 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1872828558, now seen corresponding path program 7 times [2022-03-15 15:23:42,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:42,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235208233] [2022-03-15 15:23:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:42,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:42,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:42,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235208233] [2022-03-15 15:23:42,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235208233] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:42,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887324814] [2022-03-15 15:23:42,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:23:42,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:42,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:42,713 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:42,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 15:23:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:42,734 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:42,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:43,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:43,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887324814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:43,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:43,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:43,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214747921] [2022-03-15 15:23:43,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:43,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:43,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:43,629 INFO L87 Difference]: Start difference. First operand 265 states and 579 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:46,463 INFO L93 Difference]: Finished difference Result 523 states and 1024 transitions. [2022-03-15 15:23:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 15:23:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:46,465 INFO L225 Difference]: With dead ends: 523 [2022-03-15 15:23:46,465 INFO L226 Difference]: Without dead ends: 520 [2022-03-15 15:23:46,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1342, Invalid=10000, Unknown=0, NotChecked=0, Total=11342 [2022-03-15 15:23:46,466 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 467 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:46,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 750 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:23:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-03-15 15:23:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 270. [2022-03-15 15:23:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.1895910780669143) internal successors, (589), 269 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 589 transitions. [2022-03-15 15:23:46,470 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 589 transitions. Word has length 21 [2022-03-15 15:23:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:46,470 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 589 transitions. [2022-03-15 15:23:46,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 589 transitions. [2022-03-15 15:23:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:46,471 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:46,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:46,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-15 15:23:46,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:46,671 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -729918946, now seen corresponding path program 8 times [2022-03-15 15:23:46,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:46,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650801342] [2022-03-15 15:23:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:46,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:46,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:46,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650801342] [2022-03-15 15:23:46,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650801342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:46,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337272615] [2022-03-15 15:23:46,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:23:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:46,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:46,854 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:46,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 15:23:46,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:23:46,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:46,873 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:46,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:47,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:47,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337272615] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:47,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:47,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:47,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178647681] [2022-03-15 15:23:47,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:47,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:47,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:47,782 INFO L87 Difference]: Start difference. First operand 270 states and 589 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:51,072 INFO L93 Difference]: Finished difference Result 548 states and 1075 transitions. [2022-03-15 15:23:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 15:23:51,072 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:51,073 INFO L225 Difference]: With dead ends: 548 [2022-03-15 15:23:51,073 INFO L226 Difference]: Without dead ends: 545 [2022-03-15 15:23:51,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1545, Invalid=11795, Unknown=0, NotChecked=0, Total=13340 [2022-03-15 15:23:51,075 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 371 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:51,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 773 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:23:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-03-15 15:23:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 272. [2022-03-15 15:23:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.188191881918819) internal successors, (593), 271 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 593 transitions. [2022-03-15 15:23:51,090 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 593 transitions. Word has length 21 [2022-03-15 15:23:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:51,090 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 593 transitions. [2022-03-15 15:23:51,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 593 transitions. [2022-03-15 15:23:51,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:51,090 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:51,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:51,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-15 15:23:51,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:51,299 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 162255760, now seen corresponding path program 9 times [2022-03-15 15:23:51,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:51,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230297043] [2022-03-15 15:23:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:51,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:51,476 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:51,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230297043] [2022-03-15 15:23:51,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230297043] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:51,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094779984] [2022-03-15 15:23:51,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:23:51,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:51,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:51,477 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:51,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 15:23:51,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:23:51,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:51,501 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:51,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:51,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:52,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:52,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094779984] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:52,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:52,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:52,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355244229] [2022-03-15 15:23:52,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:52,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:52,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:52,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:52,397 INFO L87 Difference]: Start difference. First operand 272 states and 593 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:23:55,119 INFO L93 Difference]: Finished difference Result 549 states and 1078 transitions. [2022-03-15 15:23:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 15:23:55,119 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:23:55,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:23:55,120 INFO L225 Difference]: With dead ends: 549 [2022-03-15 15:23:55,120 INFO L226 Difference]: Without dead ends: 546 [2022-03-15 15:23:55,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1327, Invalid=9803, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 15:23:55,121 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 448 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:23:55,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 779 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:23:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-03-15 15:23:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 270. [2022-03-15 15:23:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.1895910780669143) internal successors, (589), 269 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 589 transitions. [2022-03-15 15:23:55,126 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 589 transitions. Word has length 21 [2022-03-15 15:23:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:23:55,126 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 589 transitions. [2022-03-15 15:23:55,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:23:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 589 transitions. [2022-03-15 15:23:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:23:55,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:23:55,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:23:55,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-15 15:23:55,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-15 15:23:55,330 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:23:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:23:55,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1693426804, now seen corresponding path program 10 times [2022-03-15 15:23:55,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:23:55,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938100243] [2022-03-15 15:23:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:23:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:23:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:23:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:55,523 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:23:55,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938100243] [2022-03-15 15:23:55,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938100243] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:23:55,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892342352] [2022-03-15 15:23:55,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:23:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:23:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:23:55,524 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:23:55,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-15 15:23:55,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:23:55,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:23:55,544 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:23:55,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:23:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:55,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:23:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:23:56,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892342352] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:23:56,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:23:56,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:23:56,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953925145] [2022-03-15 15:23:56,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:23:56,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:23:56,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:23:56,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:23:56,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:23:56,447 INFO L87 Difference]: Start difference. First operand 270 states and 589 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:00,356 INFO L93 Difference]: Finished difference Result 574 states and 1130 transitions. [2022-03-15 15:24:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-15 15:24:00,356 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:00,358 INFO L225 Difference]: With dead ends: 574 [2022-03-15 15:24:00,358 INFO L226 Difference]: Without dead ends: 571 [2022-03-15 15:24:00,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1868, Invalid=14134, Unknown=0, NotChecked=0, Total=16002 [2022-03-15 15:24:00,359 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 415 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:00,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 895 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:24:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-03-15 15:24:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 276. [2022-03-15 15:24:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.1854545454545455) internal successors, (601), 275 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 601 transitions. [2022-03-15 15:24:00,364 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 601 transitions. Word has length 21 [2022-03-15 15:24:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:00,364 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 601 transitions. [2022-03-15 15:24:00,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 601 transitions. [2022-03-15 15:24:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:00,364 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:00,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:00,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:00,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-03-15 15:24:00,565 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:00,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1700749624, now seen corresponding path program 11 times [2022-03-15 15:24:00,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:00,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413217895] [2022-03-15 15:24:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:00,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:00,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:00,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413217895] [2022-03-15 15:24:00,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413217895] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:00,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76763082] [2022-03-15 15:24:00,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:24:00,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:00,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:00,753 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:00,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-15 15:24:00,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:24:00,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:00,770 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:00,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:01,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:01,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76763082] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:01,629 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:01,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:24:01,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846658284] [2022-03-15 15:24:01,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:01,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:24:01,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:01,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:24:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:24:01,630 INFO L87 Difference]: Start difference. First operand 276 states and 601 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:04,772 INFO L93 Difference]: Finished difference Result 602 states and 1187 transitions. [2022-03-15 15:24:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 15:24:04,772 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:04,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:04,774 INFO L225 Difference]: With dead ends: 602 [2022-03-15 15:24:04,774 INFO L226 Difference]: Without dead ends: 595 [2022-03-15 15:24:04,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3808 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1657, Invalid=11915, Unknown=0, NotChecked=0, Total=13572 [2022-03-15 15:24:04,775 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 428 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:04,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 926 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:24:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-03-15 15:24:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 282. [2022-03-15 15:24:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.185053380782918) internal successors, (614), 281 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 614 transitions. [2022-03-15 15:24:04,780 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 614 transitions. Word has length 21 [2022-03-15 15:24:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:04,780 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 614 transitions. [2022-03-15 15:24:04,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 614 transitions. [2022-03-15 15:24:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:04,781 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:04,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:04,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-15 15:24:04,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-15 15:24:04,981 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:04,982 INFO L85 PathProgramCache]: Analyzing trace with hash 395681954, now seen corresponding path program 12 times [2022-03-15 15:24:04,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:04,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630820372] [2022-03-15 15:24:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:04,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:05,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:05,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630820372] [2022-03-15 15:24:05,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630820372] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:05,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459039141] [2022-03-15 15:24:05,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:24:05,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:05,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:05,188 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:05,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-15 15:24:05,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:24:05,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:05,207 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:05,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:05,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:06,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459039141] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:06,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:06,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:24:06,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100919285] [2022-03-15 15:24:06,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:06,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:24:06,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:24:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:24:06,150 INFO L87 Difference]: Start difference. First operand 282 states and 614 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:10,725 INFO L93 Difference]: Finished difference Result 589 states and 1149 transitions. [2022-03-15 15:24:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-15 15:24:10,725 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:10,727 INFO L225 Difference]: With dead ends: 589 [2022-03-15 15:24:10,727 INFO L226 Difference]: Without dead ends: 586 [2022-03-15 15:24:10,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5183 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2047, Invalid=15509, Unknown=0, NotChecked=0, Total=17556 [2022-03-15 15:24:10,728 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 466 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:10,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 889 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:24:10,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-03-15 15:24:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 286. [2022-03-15 15:24:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.185964912280702) internal successors, (623), 285 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 623 transitions. [2022-03-15 15:24:10,733 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 623 transitions. Word has length 21 [2022-03-15 15:24:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 623 transitions. [2022-03-15 15:24:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 623 transitions. [2022-03-15 15:24:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:10,734 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:10,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:10,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:10,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:10,949 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1287856660, now seen corresponding path program 13 times [2022-03-15 15:24:10,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:10,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261280216] [2022-03-15 15:24:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:11,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:11,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261280216] [2022-03-15 15:24:11,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261280216] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:11,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112187816] [2022-03-15 15:24:11,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:24:11,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:11,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:11,169 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:11,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-15 15:24:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:11,187 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:11,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:11,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:12,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112187816] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:12,095 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:12,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:24:12,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077466791] [2022-03-15 15:24:12,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:12,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:24:12,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:24:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:24:12,096 INFO L87 Difference]: Start difference. First operand 286 states and 623 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:16,226 INFO L93 Difference]: Finished difference Result 595 states and 1159 transitions. [2022-03-15 15:24:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 15:24:16,226 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:16,228 INFO L225 Difference]: With dead ends: 595 [2022-03-15 15:24:16,228 INFO L226 Difference]: Without dead ends: 592 [2022-03-15 15:24:16,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4338 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1856, Invalid=13396, Unknown=0, NotChecked=0, Total=15252 [2022-03-15 15:24:16,229 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 446 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:16,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1115 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:24:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-03-15 15:24:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 284. [2022-03-15 15:24:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 2.187279151943463) internal successors, (619), 283 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 619 transitions. [2022-03-15 15:24:16,234 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 619 transitions. Word has length 21 [2022-03-15 15:24:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:16,234 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 619 transitions. [2022-03-15 15:24:16,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 619 transitions. [2022-03-15 15:24:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:16,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:16,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:16,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:16,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-15 15:24:16,450 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:16,451 INFO L85 PathProgramCache]: Analyzing trace with hash -567825904, now seen corresponding path program 14 times [2022-03-15 15:24:16,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:16,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623877856] [2022-03-15 15:24:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:16,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:16,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:16,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623877856] [2022-03-15 15:24:16,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623877856] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:16,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687128794] [2022-03-15 15:24:16,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:24:16,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:16,625 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:16,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-15 15:24:16,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:24:16,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:16,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:16,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:17,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:17,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687128794] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:17,553 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:17,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:24:17,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016157278] [2022-03-15 15:24:17,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:17,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:24:17,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:24:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:24:17,553 INFO L87 Difference]: Start difference. First operand 284 states and 619 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:22,967 INFO L93 Difference]: Finished difference Result 642 states and 1253 transitions. [2022-03-15 15:24:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-15 15:24:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:22,969 INFO L225 Difference]: With dead ends: 642 [2022-03-15 15:24:22,969 INFO L226 Difference]: Without dead ends: 639 [2022-03-15 15:24:22,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6831 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2630, Invalid=19422, Unknown=0, NotChecked=0, Total=22052 [2022-03-15 15:24:22,970 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 608 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:22,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 816 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:24:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-15 15:24:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 290. [2022-03-15 15:24:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.1833910034602075) internal successors, (631), 289 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 631 transitions. [2022-03-15 15:24:22,975 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 631 transitions. Word has length 21 [2022-03-15 15:24:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:22,975 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 631 transitions. [2022-03-15 15:24:22,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 631 transitions. [2022-03-15 15:24:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:22,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:22,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:22,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:23,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:23,177 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -575148724, now seen corresponding path program 15 times [2022-03-15 15:24:23,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:23,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983643938] [2022-03-15 15:24:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:23,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:23,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983643938] [2022-03-15 15:24:23,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983643938] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:23,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869333979] [2022-03-15 15:24:23,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:24:23,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:23,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:23,368 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:23,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-15 15:24:23,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:24:23,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:23,386 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:23,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:23,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:24,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869333979] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:24,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:24,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:24:24,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65901335] [2022-03-15 15:24:24,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:24,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:24:24,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:24:24,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:24:24,259 INFO L87 Difference]: Start difference. First operand 290 states and 631 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:28,793 INFO L93 Difference]: Finished difference Result 684 states and 1339 transitions. [2022-03-15 15:24:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-15 15:24:28,795 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:28,797 INFO L225 Difference]: With dead ends: 684 [2022-03-15 15:24:28,797 INFO L226 Difference]: Without dead ends: 677 [2022-03-15 15:24:28,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6076 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2418, Invalid=17322, Unknown=0, NotChecked=0, Total=19740 [2022-03-15 15:24:28,798 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 534 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:28,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 855 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:24:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-03-15 15:24:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 286. [2022-03-15 15:24:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.1894736842105265) internal successors, (624), 285 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 624 transitions. [2022-03-15 15:24:28,804 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 624 transitions. Word has length 21 [2022-03-15 15:24:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:28,804 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 624 transitions. [2022-03-15 15:24:28,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 624 transitions. [2022-03-15 15:24:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:28,804 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:28,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:28,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:29,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-03-15 15:24:29,015 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:29,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1047410512, now seen corresponding path program 16 times [2022-03-15 15:24:29,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:29,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259680030] [2022-03-15 15:24:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:29,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:29,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:29,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259680030] [2022-03-15 15:24:29,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259680030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:29,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167568469] [2022-03-15 15:24:29,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:24:29,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:29,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:29,193 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:29,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-15 15:24:29,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:24:29,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:29,211 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:29,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:29,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:30,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167568469] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:30,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:30,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:24:30,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293526009] [2022-03-15 15:24:30,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:30,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:24:30,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:30,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:24:30,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:24:30,131 INFO L87 Difference]: Start difference. First operand 286 states and 624 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:34,046 INFO L93 Difference]: Finished difference Result 619 states and 1216 transitions. [2022-03-15 15:24:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 15:24:34,047 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:34,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:34,048 INFO L225 Difference]: With dead ends: 619 [2022-03-15 15:24:34,048 INFO L226 Difference]: Without dead ends: 616 [2022-03-15 15:24:34,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4241 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1910, Invalid=12852, Unknown=0, NotChecked=0, Total=14762 [2022-03-15 15:24:34,049 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 397 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:34,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 924 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:24:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-03-15 15:24:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 288. [2022-03-15 15:24:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.191637630662021) internal successors, (629), 287 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 629 transitions. [2022-03-15 15:24:34,054 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 629 transitions. Word has length 21 [2022-03-15 15:24:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:34,054 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 629 transitions. [2022-03-15 15:24:34,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:34,054 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 629 transitions. [2022-03-15 15:24:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:34,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:34,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:34,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-15 15:24:34,269 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash -808272052, now seen corresponding path program 17 times [2022-03-15 15:24:34,270 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:34,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851580655] [2022-03-15 15:24:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:34,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:34,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:34,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851580655] [2022-03-15 15:24:34,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851580655] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:34,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123719421] [2022-03-15 15:24:34,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:24:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:34,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:34,454 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:34,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-15 15:24:34,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:24:34,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:34,472 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:34,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:34,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:35,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123719421] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:35,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:35,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:24:35,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688074869] [2022-03-15 15:24:35,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:35,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:24:35,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:35,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:24:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:24:35,383 INFO L87 Difference]: Start difference. First operand 288 states and 629 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:40,571 INFO L93 Difference]: Finished difference Result 670 states and 1316 transitions. [2022-03-15 15:24:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-15 15:24:40,572 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:40,573 INFO L225 Difference]: With dead ends: 670 [2022-03-15 15:24:40,573 INFO L226 Difference]: Without dead ends: 667 [2022-03-15 15:24:40,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6529 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2632, Invalid=18248, Unknown=0, NotChecked=0, Total=20880 [2022-03-15 15:24:40,574 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 483 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:40,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 909 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:24:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-03-15 15:24:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 292. [2022-03-15 15:24:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.189003436426117) internal successors, (637), 291 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 637 transitions. [2022-03-15 15:24:40,580 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 637 transitions. Word has length 21 [2022-03-15 15:24:40,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:40,580 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 637 transitions. [2022-03-15 15:24:40,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:40,580 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 637 transitions. [2022-03-15 15:24:40,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:40,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:40,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:40,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:40,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:40,781 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash -815594872, now seen corresponding path program 18 times [2022-03-15 15:24:40,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:40,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167758073] [2022-03-15 15:24:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:40,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:40,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:40,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167758073] [2022-03-15 15:24:40,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167758073] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:40,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246906656] [2022-03-15 15:24:40,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:24:40,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:40,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:40,976 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:40,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-15 15:24:40,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:24:40,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:40,994 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:40,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:41,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:41,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246906656] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:41,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:41,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:24:41,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231611764] [2022-03-15 15:24:41,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:41,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:24:41,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:24:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:24:41,892 INFO L87 Difference]: Start difference. First operand 292 states and 637 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:46,344 INFO L93 Difference]: Finished difference Result 704 states and 1385 transitions. [2022-03-15 15:24:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-15 15:24:46,344 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:46,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:46,345 INFO L225 Difference]: With dead ends: 704 [2022-03-15 15:24:46,345 INFO L226 Difference]: Without dead ends: 697 [2022-03-15 15:24:46,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6109 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2558, Invalid=16902, Unknown=0, NotChecked=0, Total=19460 [2022-03-15 15:24:46,347 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 558 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:46,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 734 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:24:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-03-15 15:24:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 290. [2022-03-15 15:24:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.1937716262975777) internal successors, (634), 289 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 634 transitions. [2022-03-15 15:24:46,352 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 634 transitions. Word has length 21 [2022-03-15 15:24:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:46,352 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 634 transitions. [2022-03-15 15:24:46,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 634 transitions. [2022-03-15 15:24:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:46,353 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:46,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:46,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-15 15:24:46,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-03-15 15:24:46,555 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash -64553140, now seen corresponding path program 19 times [2022-03-15 15:24:46,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:46,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611915026] [2022-03-15 15:24:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:46,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:46,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611915026] [2022-03-15 15:24:46,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611915026] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:46,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438405728] [2022-03-15 15:24:46,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:24:46,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:46,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:46,744 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:46,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-15 15:24:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:46,762 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:46,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:47,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:47,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438405728] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:47,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:47,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:24:47,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945131407] [2022-03-15 15:24:47,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:47,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:24:47,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:24:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:24:47,693 INFO L87 Difference]: Start difference. First operand 290 states and 634 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:24:56,962 INFO L93 Difference]: Finished difference Result 822 states and 1606 transitions. [2022-03-15 15:24:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-03-15 15:24:56,962 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:24:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:24:56,963 INFO L225 Difference]: With dead ends: 822 [2022-03-15 15:24:56,963 INFO L226 Difference]: Without dead ends: 816 [2022-03-15 15:24:56,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16291 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=5572, Invalid=38738, Unknown=0, NotChecked=0, Total=44310 [2022-03-15 15:24:56,965 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 791 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:24:56,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 825 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 15:24:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-03-15 15:24:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 297. [2022-03-15 15:24:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.206081081081081) internal successors, (653), 296 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 653 transitions. [2022-03-15 15:24:56,971 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 653 transitions. Word has length 21 [2022-03-15 15:24:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:24:56,972 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 653 transitions. [2022-03-15 15:24:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:24:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 653 transitions. [2022-03-15 15:24:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:24:56,972 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:24:56,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:24:56,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-03-15 15:24:57,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-03-15 15:24:57,188 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:24:57,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:24:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash -71875960, now seen corresponding path program 20 times [2022-03-15 15:24:57,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:24:57,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305926434] [2022-03-15 15:24:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:24:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:24:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:24:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:57,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:24:57,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305926434] [2022-03-15 15:24:57,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305926434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:24:57,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197558778] [2022-03-15 15:24:57,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:24:57,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:24:57,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:24:57,416 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:24:57,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-15 15:24:57,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:24:57,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:24:57,434 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:24:57,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:24:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:57,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:24:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:24:58,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197558778] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:24:58,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:24:58,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:24:58,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428102942] [2022-03-15 15:24:58,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:24:58,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:24:58,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:24:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:24:58,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:24:58,329 INFO L87 Difference]: Start difference. First operand 297 states and 653 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:06,562 INFO L93 Difference]: Finished difference Result 883 states and 1727 transitions. [2022-03-15 15:25:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-15 15:25:06,562 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:06,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:06,564 INFO L225 Difference]: With dead ends: 883 [2022-03-15 15:25:06,564 INFO L226 Difference]: Without dead ends: 869 [2022-03-15 15:25:06,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14521 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=5333, Invalid=34069, Unknown=0, NotChecked=0, Total=39402 [2022-03-15 15:25:06,566 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 794 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:06,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1083 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 15:25:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-03-15 15:25:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 304. [2022-03-15 15:25:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 2.237623762376238) internal successors, (678), 303 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 678 transitions. [2022-03-15 15:25:06,572 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 678 transitions. Word has length 21 [2022-03-15 15:25:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:06,572 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 678 transitions. [2022-03-15 15:25:06,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 678 transitions. [2022-03-15 15:25:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:06,573 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:06,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:06,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:06,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:06,773 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2039413384, now seen corresponding path program 21 times [2022-03-15 15:25:06,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:06,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888188608] [2022-03-15 15:25:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:06,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:06,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:06,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888188608] [2022-03-15 15:25:06,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888188608] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:06,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381469207] [2022-03-15 15:25:06,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:25:06,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:06,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:06,956 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:06,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-15 15:25:06,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:25:06,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:06,974 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:06,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:07,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:07,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381469207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:07,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:07,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:25:07,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010226232] [2022-03-15 15:25:07,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:07,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:25:07,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:25:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:25:07,879 INFO L87 Difference]: Start difference. First operand 304 states and 678 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:14,311 INFO L93 Difference]: Finished difference Result 823 states and 1648 transitions. [2022-03-15 15:25:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-03-15 15:25:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:14,313 INFO L225 Difference]: With dead ends: 823 [2022-03-15 15:25:14,313 INFO L226 Difference]: Without dead ends: 802 [2022-03-15 15:25:14,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10340 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=4207, Invalid=25205, Unknown=0, NotChecked=0, Total=29412 [2022-03-15 15:25:14,314 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 671 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:14,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 809 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:25:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-03-15 15:25:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 302. [2022-03-15 15:25:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.229235880398671) internal successors, (671), 301 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 671 transitions. [2022-03-15 15:25:14,320 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 671 transitions. Word has length 21 [2022-03-15 15:25:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:14,320 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 671 transitions. [2022-03-15 15:25:14,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:14,320 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 671 transitions. [2022-03-15 15:25:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:14,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:14,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:14,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-03-15 15:25:14,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:14,528 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1363186158, now seen corresponding path program 22 times [2022-03-15 15:25:14,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:14,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818604797] [2022-03-15 15:25:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:14,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:14,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818604797] [2022-03-15 15:25:14,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818604797] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:14,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696250361] [2022-03-15 15:25:14,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:25:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:14,749 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:14,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:25:14,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:14,768 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:14,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:14,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-15 15:25:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:15,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:15,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696250361] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:15,667 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:15,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:15,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014291895] [2022-03-15 15:25:15,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:15,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:15,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:15,667 INFO L87 Difference]: Start difference. First operand 302 states and 671 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:17,558 INFO L93 Difference]: Finished difference Result 541 states and 1090 transitions. [2022-03-15 15:25:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 15:25:17,559 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:17,560 INFO L225 Difference]: With dead ends: 541 [2022-03-15 15:25:17,560 INFO L226 Difference]: Without dead ends: 538 [2022-03-15 15:25:17,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2036 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=965, Invalid=7407, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 15:25:17,560 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 248 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:17,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 722 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:25:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-15 15:25:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 307. [2022-03-15 15:25:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 2.2287581699346406) internal successors, (682), 306 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 682 transitions. [2022-03-15 15:25:17,565 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 682 transitions. Word has length 21 [2022-03-15 15:25:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:17,565 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 682 transitions. [2022-03-15 15:25:17,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 682 transitions. [2022-03-15 15:25:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:17,566 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:17,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:17,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-15 15:25:17,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:17,781 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1788871526, now seen corresponding path program 23 times [2022-03-15 15:25:17,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:17,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621697701] [2022-03-15 15:25:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:17,953 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:17,953 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621697701] [2022-03-15 15:25:17,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621697701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:17,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130524454] [2022-03-15 15:25:17,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:25:17,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:17,955 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:17,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-15 15:25:17,972 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:25:17,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:17,973 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:17,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:18,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:18,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130524454] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:18,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:18,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:18,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374091174] [2022-03-15 15:25:18,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:18,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:18,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:18,867 INFO L87 Difference]: Start difference. First operand 307 states and 682 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:21,003 INFO L93 Difference]: Finished difference Result 558 states and 1127 transitions. [2022-03-15 15:25:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 15:25:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:21,004 INFO L225 Difference]: With dead ends: 558 [2022-03-15 15:25:21,004 INFO L226 Difference]: Without dead ends: 555 [2022-03-15 15:25:21,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1063, Invalid=8249, Unknown=0, NotChecked=0, Total=9312 [2022-03-15 15:25:21,005 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 248 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:21,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 713 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:25:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-15 15:25:21,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 309. [2022-03-15 15:25:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 2.227272727272727) internal successors, (686), 308 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 686 transitions. [2022-03-15 15:25:21,010 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 686 transitions. Word has length 21 [2022-03-15 15:25:21,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:21,010 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 686 transitions. [2022-03-15 15:25:21,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:21,010 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 686 transitions. [2022-03-15 15:25:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:21,010 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:21,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:21,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:21,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-15 15:25:21,223 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:21,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:21,224 INFO L85 PathProgramCache]: Analyzing trace with hash -896696820, now seen corresponding path program 24 times [2022-03-15 15:25:21,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:21,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154194782] [2022-03-15 15:25:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:21,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:21,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:21,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154194782] [2022-03-15 15:25:21,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154194782] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:21,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961486476] [2022-03-15 15:25:21,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:25:21,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:21,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:21,405 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:21,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-15 15:25:21,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:25:21,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:21,423 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:21,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:22,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961486476] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:22,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:22,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:22,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686438435] [2022-03-15 15:25:22,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:22,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:22,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:22,344 INFO L87 Difference]: Start difference. First operand 309 states and 686 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:24,137 INFO L93 Difference]: Finished difference Result 559 states and 1130 transitions. [2022-03-15 15:25:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 15:25:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:24,138 INFO L225 Difference]: With dead ends: 559 [2022-03-15 15:25:24,138 INFO L226 Difference]: Without dead ends: 556 [2022-03-15 15:25:24,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=952, Invalid=7238, Unknown=0, NotChecked=0, Total=8190 [2022-03-15 15:25:24,139 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 243 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:24,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 723 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:25:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-15 15:25:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 311. [2022-03-15 15:25:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 2.225806451612903) internal successors, (690), 310 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 690 transitions. [2022-03-15 15:25:24,143 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 690 transitions. Word has length 21 [2022-03-15 15:25:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:24,143 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 690 transitions. [2022-03-15 15:25:24,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 690 transitions. [2022-03-15 15:25:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:24,144 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:24,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:24,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-15 15:25:24,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-03-15 15:25:24,344 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:24,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:24,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1542587912, now seen corresponding path program 25 times [2022-03-15 15:25:24,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:24,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043371] [2022-03-15 15:25:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:24,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:24,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:24,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043371] [2022-03-15 15:25:24,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043371] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:24,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157958590] [2022-03-15 15:25:24,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:25:24,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:24,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:24,532 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:24,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-15 15:25:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:24,550 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:24,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:24,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:25,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157958590] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:25,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:25,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:25,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101988922] [2022-03-15 15:25:25,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:25,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:25,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:25,449 INFO L87 Difference]: Start difference. First operand 311 states and 690 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:27,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:27,879 INFO L93 Difference]: Finished difference Result 578 states and 1176 transitions. [2022-03-15 15:25:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 15:25:27,879 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:27,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:27,880 INFO L225 Difference]: With dead ends: 578 [2022-03-15 15:25:27,880 INFO L226 Difference]: Without dead ends: 575 [2022-03-15 15:25:27,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1290, Invalid=9840, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 15:25:27,881 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 286 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:27,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 849 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:25:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-15 15:25:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 305. [2022-03-15 15:25:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 2.2302631578947367) internal successors, (678), 304 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 678 transitions. [2022-03-15 15:25:27,885 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 678 transitions. Word has length 21 [2022-03-15 15:25:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:27,885 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 678 transitions. [2022-03-15 15:25:27,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 678 transitions. [2022-03-15 15:25:27,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:27,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:27,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:27,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-15 15:25:28,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-03-15 15:25:28,087 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:28,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash -663270626, now seen corresponding path program 26 times [2022-03-15 15:25:28,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:28,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86160808] [2022-03-15 15:25:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:28,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:28,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86160808] [2022-03-15 15:25:28,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86160808] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:28,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566881927] [2022-03-15 15:25:28,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:25:28,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:28,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:28,263 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:28,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-15 15:25:28,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:25:28,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:28,281 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:28,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:28,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:29,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566881927] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:29,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:29,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:29,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372153028] [2022-03-15 15:25:29,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:29,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:29,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:29,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:29,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:29,243 INFO L87 Difference]: Start difference. First operand 305 states and 678 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:32,040 INFO L93 Difference]: Finished difference Result 569 states and 1152 transitions. [2022-03-15 15:25:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-15 15:25:32,040 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:32,041 INFO L225 Difference]: With dead ends: 569 [2022-03-15 15:25:32,041 INFO L226 Difference]: Without dead ends: 566 [2022-03-15 15:25:32,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3314 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1407, Invalid=10803, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 15:25:32,043 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 298 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:32,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 648 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:25:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-03-15 15:25:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 309. [2022-03-15 15:25:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 2.2305194805194803) internal successors, (687), 308 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 687 transitions. [2022-03-15 15:25:32,048 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 687 transitions. Word has length 21 [2022-03-15 15:25:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:32,048 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 687 transitions. [2022-03-15 15:25:32,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 687 transitions. [2022-03-15 15:25:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:32,048 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:32,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:32,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:32,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:32,249 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 228904080, now seen corresponding path program 27 times [2022-03-15 15:25:32,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:32,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231007260] [2022-03-15 15:25:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:32,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:32,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:32,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231007260] [2022-03-15 15:25:32,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231007260] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:32,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144502307] [2022-03-15 15:25:32,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:25:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:32,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:32,433 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:32,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-15 15:25:32,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:25:32,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:32,450 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:32,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:32,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:33,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144502307] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:33,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:33,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:33,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799360180] [2022-03-15 15:25:33,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:33,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:33,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:33,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:33,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:33,379 INFO L87 Difference]: Start difference. First operand 309 states and 687 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:36,043 INFO L93 Difference]: Finished difference Result 575 states and 1162 transitions. [2022-03-15 15:25:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 15:25:36,043 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:36,044 INFO L225 Difference]: With dead ends: 575 [2022-03-15 15:25:36,044 INFO L226 Difference]: Without dead ends: 572 [2022-03-15 15:25:36,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1327, Invalid=9803, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 15:25:36,045 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 271 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:36,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 880 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:25:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-15 15:25:36,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 311. [2022-03-15 15:25:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 2.229032258064516) internal successors, (691), 310 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 691 transitions. [2022-03-15 15:25:36,050 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 691 transitions. Word has length 21 [2022-03-15 15:25:36,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:36,050 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 691 transitions. [2022-03-15 15:25:36,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 691 transitions. [2022-03-15 15:25:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:36,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:36,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:36,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-15 15:25:36,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:36,255 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1626778484, now seen corresponding path program 28 times [2022-03-15 15:25:36,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:36,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925289765] [2022-03-15 15:25:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:36,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:36,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:36,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925289765] [2022-03-15 15:25:36,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925289765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:36,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326781051] [2022-03-15 15:25:36,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:25:36,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:36,438 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:36,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-15 15:25:36,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:25:36,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:36,457 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:36,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:36,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:37,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326781051] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:37,369 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:37,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:37,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470607463] [2022-03-15 15:25:37,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:37,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:37,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:37,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:37,370 INFO L87 Difference]: Start difference. First operand 311 states and 691 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:40,757 INFO L93 Difference]: Finished difference Result 594 states and 1208 transitions. [2022-03-15 15:25:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 15:25:40,757 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:40,761 INFO L225 Difference]: With dead ends: 594 [2022-03-15 15:25:40,761 INFO L226 Difference]: Without dead ends: 591 [2022-03-15 15:25:40,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4245 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1793, Invalid=13213, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 15:25:40,762 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 334 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:40,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 771 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:25:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-03-15 15:25:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 307. [2022-03-15 15:25:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 2.2320261437908497) internal successors, (683), 306 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 683 transitions. [2022-03-15 15:25:40,767 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 683 transitions. Word has length 21 [2022-03-15 15:25:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:40,767 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 683 transitions. [2022-03-15 15:25:40,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 683 transitions. [2022-03-15 15:25:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:40,768 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:40,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:40,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:40,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-15 15:25:40,969 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash -11542068, now seen corresponding path program 29 times [2022-03-15 15:25:40,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:40,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688701630] [2022-03-15 15:25:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:40,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:41,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:41,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688701630] [2022-03-15 15:25:41,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688701630] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:41,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7590334] [2022-03-15 15:25:41,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:25:41,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:41,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:41,153 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:41,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-15 15:25:41,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:25:41,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:41,170 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:41,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:41,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:42,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7590334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:42,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:42,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:42,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578078859] [2022-03-15 15:25:42,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:42,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:42,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:42,150 INFO L87 Difference]: Start difference. First operand 307 states and 683 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:44,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:44,704 INFO L93 Difference]: Finished difference Result 598 states and 1215 transitions. [2022-03-15 15:25:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 15:25:44,705 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:44,705 INFO L225 Difference]: With dead ends: 598 [2022-03-15 15:25:44,706 INFO L226 Difference]: Without dead ends: 595 [2022-03-15 15:25:44,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1377, Invalid=9543, Unknown=0, NotChecked=0, Total=10920 [2022-03-15 15:25:44,706 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 250 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:44,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 677 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:25:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-03-15 15:25:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 311. [2022-03-15 15:25:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 2.232258064516129) internal successors, (692), 310 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 692 transitions. [2022-03-15 15:25:44,715 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 692 transitions. Word has length 21 [2022-03-15 15:25:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:44,716 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 692 transitions. [2022-03-15 15:25:44,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 692 transitions. [2022-03-15 15:25:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:44,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:44,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:44,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:44,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-15 15:25:44,917 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1867224632, now seen corresponding path program 30 times [2022-03-15 15:25:44,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:44,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574559022] [2022-03-15 15:25:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:44,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:45,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:45,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574559022] [2022-03-15 15:25:45,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574559022] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:45,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385721721] [2022-03-15 15:25:45,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:25:45,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:45,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:45,096 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:45,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-15 15:25:45,114 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:25:45,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:45,114 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:45,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:45,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:46,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385721721] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:46,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:46,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:46,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287171746] [2022-03-15 15:25:46,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:46,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:46,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:46,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:46,048 INFO L87 Difference]: Start difference. First operand 311 states and 692 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:49,098 INFO L93 Difference]: Finished difference Result 617 states and 1258 transitions. [2022-03-15 15:25:49,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-15 15:25:49,098 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:49,099 INFO L225 Difference]: With dead ends: 617 [2022-03-15 15:25:49,099 INFO L226 Difference]: Without dead ends: 614 [2022-03-15 15:25:49,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1790, Invalid=12490, Unknown=0, NotChecked=0, Total=14280 [2022-03-15 15:25:49,100 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 324 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:49,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 569 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:25:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-03-15 15:25:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 309. [2022-03-15 15:25:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 2.2337662337662336) internal successors, (688), 308 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 688 transitions. [2022-03-15 15:25:49,105 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 688 transitions. Word has length 21 [2022-03-15 15:25:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:49,105 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 688 transitions. [2022-03-15 15:25:49,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 688 transitions. [2022-03-15 15:25:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:49,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:49,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:49,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:49,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:49,312 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:49,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:49,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1123505720, now seen corresponding path program 31 times [2022-03-15 15:25:49,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:49,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379412726] [2022-03-15 15:25:49,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:49,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:49,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:49,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379412726] [2022-03-15 15:25:49,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379412726] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:49,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145231470] [2022-03-15 15:25:49,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:25:49,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:49,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:49,493 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:49,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-15 15:25:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:49,511 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:49,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:49,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:50,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145231470] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:50,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:50,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:50,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229990358] [2022-03-15 15:25:50,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:50,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:50,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:50,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2031, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:50,444 INFO L87 Difference]: Start difference. First operand 309 states and 688 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:55,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:55,222 INFO L93 Difference]: Finished difference Result 681 states and 1392 transitions. [2022-03-15 15:25:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-03-15 15:25:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:55,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:55,224 INFO L225 Difference]: With dead ends: 681 [2022-03-15 15:25:55,224 INFO L226 Difference]: Without dead ends: 678 [2022-03-15 15:25:55,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8417 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3235, Invalid=21887, Unknown=0, NotChecked=0, Total=25122 [2022-03-15 15:25:55,225 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 397 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:55,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 562 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:25:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-03-15 15:25:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 311. [2022-03-15 15:25:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 2.2419354838709675) internal successors, (695), 310 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 695 transitions. [2022-03-15 15:25:55,230 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 695 transitions. Word has length 21 [2022-03-15 15:25:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:55,230 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 695 transitions. [2022-03-15 15:25:55,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 695 transitions. [2022-03-15 15:25:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:55,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:55,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:55,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:55,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-15 15:25:55,443 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1690030738, now seen corresponding path program 32 times [2022-03-15 15:25:55,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:55,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744051153] [2022-03-15 15:25:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:55,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:55,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744051153] [2022-03-15 15:25:55,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744051153] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:55,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755467684] [2022-03-15 15:25:55,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:25:55,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:55,625 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:55,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-15 15:25:55,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:25:55,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:55,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:55,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:25:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:56,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:25:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:56,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755467684] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:25:56,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:25:56,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:25:56,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999274244] [2022-03-15 15:25:56,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:25:56,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:25:56,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:25:56,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:25:56,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:25:56,588 INFO L87 Difference]: Start difference. First operand 311 states and 695 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:59,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:25:59,138 INFO L93 Difference]: Finished difference Result 587 states and 1202 transitions. [2022-03-15 15:25:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 15:25:59,139 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:25:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:25:59,140 INFO L225 Difference]: With dead ends: 587 [2022-03-15 15:25:59,140 INFO L226 Difference]: Without dead ends: 584 [2022-03-15 15:25:59,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2022-03-15 15:25:59,141 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 301 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:25:59,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 718 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:25:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-03-15 15:25:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 312. [2022-03-15 15:25:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 2.2411575562700965) internal successors, (697), 311 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 697 transitions. [2022-03-15 15:25:59,145 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 697 transitions. Word has length 21 [2022-03-15 15:25:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:25:59,145 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 697 transitions. [2022-03-15 15:25:59,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:25:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 697 transitions. [2022-03-15 15:25:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:25:59,146 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:25:59,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:25:59,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-15 15:25:59,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-03-15 15:25:59,367 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:25:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:25:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1686986368, now seen corresponding path program 33 times [2022-03-15 15:25:59,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:25:59,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624480291] [2022-03-15 15:25:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:25:59,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:25:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:25:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:25:59,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:25:59,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624480291] [2022-03-15 15:25:59,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624480291] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:25:59,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113195479] [2022-03-15 15:25:59,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:25:59,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:25:59,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:25:59,550 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:25:59,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-15 15:25:59,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:25:59,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:25:59,570 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:25:59,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:00,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:00,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113195479] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:00,526 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:00,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:00,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913525979] [2022-03-15 15:26:00,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:00,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:00,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:00,527 INFO L87 Difference]: Start difference. First operand 312 states and 697 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:03,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:03,423 INFO L93 Difference]: Finished difference Result 596 states and 1228 transitions. [2022-03-15 15:26:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 15:26:03,424 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:03,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:03,425 INFO L225 Difference]: With dead ends: 596 [2022-03-15 15:26:03,425 INFO L226 Difference]: Without dead ends: 593 [2022-03-15 15:26:03,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4071 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1863, Invalid=12657, Unknown=0, NotChecked=0, Total=14520 [2022-03-15 15:26:03,426 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 305 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:03,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 653 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:26:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-03-15 15:26:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 312. [2022-03-15 15:26:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 2.2411575562700965) internal successors, (697), 311 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 697 transitions. [2022-03-15 15:26:03,430 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 697 transitions. Word has length 21 [2022-03-15 15:26:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:03,430 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 697 transitions. [2022-03-15 15:26:03,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 697 transitions. [2022-03-15 15:26:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:03,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:03,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:03,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:03,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-15 15:26:03,631 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1498854626, now seen corresponding path program 34 times [2022-03-15 15:26:03,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:03,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827256033] [2022-03-15 15:26:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:03,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:03,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:03,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827256033] [2022-03-15 15:26:03,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827256033] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:03,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310433874] [2022-03-15 15:26:03,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:26:03,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:03,818 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:03,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-15 15:26:03,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:26:03,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:03,836 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:03,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:04,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:04,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310433874] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:04,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:04,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:04,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912034669] [2022-03-15 15:26:04,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:04,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:04,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:04,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:04,782 INFO L87 Difference]: Start difference. First operand 312 states and 697 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:07,064 INFO L93 Difference]: Finished difference Result 568 states and 1147 transitions. [2022-03-15 15:26:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 15:26:07,068 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:07,069 INFO L225 Difference]: With dead ends: 568 [2022-03-15 15:26:07,069 INFO L226 Difference]: Without dead ends: 565 [2022-03-15 15:26:07,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1205, Invalid=8497, Unknown=0, NotChecked=0, Total=9702 [2022-03-15 15:26:07,070 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 304 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:07,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 612 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:26:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-03-15 15:26:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 317. [2022-03-15 15:26:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 2.240506329113924) internal successors, (708), 316 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 708 transitions. [2022-03-15 15:26:07,075 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 708 transitions. Word has length 21 [2022-03-15 15:26:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:07,075 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 708 transitions. [2022-03-15 15:26:07,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 708 transitions. [2022-03-15 15:26:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:07,075 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:07,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:07,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:07,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-03-15 15:26:07,276 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1903937964, now seen corresponding path program 35 times [2022-03-15 15:26:07,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:07,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455372279] [2022-03-15 15:26:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:07,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:07,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:07,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455372279] [2022-03-15 15:26:07,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455372279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:07,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031989367] [2022-03-15 15:26:07,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:26:07,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:07,460 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:07,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-15 15:26:07,478 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:26:07,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:07,478 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:07,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:07,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:08,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031989367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:08,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:08,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:08,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781425131] [2022-03-15 15:26:08,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:08,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:08,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:08,417 INFO L87 Difference]: Start difference. First operand 317 states and 708 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:10,435 INFO L93 Difference]: Finished difference Result 574 states and 1157 transitions. [2022-03-15 15:26:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 15:26:10,436 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:10,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:10,437 INFO L225 Difference]: With dead ends: 574 [2022-03-15 15:26:10,437 INFO L226 Difference]: Without dead ends: 571 [2022-03-15 15:26:10,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1098, Invalid=7644, Unknown=0, NotChecked=0, Total=8742 [2022-03-15 15:26:10,437 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 303 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:10,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 694 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:26:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-03-15 15:26:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 315. [2022-03-15 15:26:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.2420382165605095) internal successors, (704), 314 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 704 transitions. [2022-03-15 15:26:10,442 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 704 transitions. Word has length 21 [2022-03-15 15:26:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:10,442 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 704 transitions. [2022-03-15 15:26:10,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 704 transitions. [2022-03-15 15:26:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:10,443 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:10,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:10,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-15 15:26:10,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:10,643 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:10,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash 535346768, now seen corresponding path program 36 times [2022-03-15 15:26:10,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:10,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875329884] [2022-03-15 15:26:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:10,821 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:10,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875329884] [2022-03-15 15:26:10,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875329884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:10,821 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803022875] [2022-03-15 15:26:10,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:26:10,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:10,822 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:10,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-15 15:26:10,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:26:10,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:10,850 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:10,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:11,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:11,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803022875] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:11,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:11,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:11,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624678] [2022-03-15 15:26:11,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:11,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:11,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:11,800 INFO L87 Difference]: Start difference. First operand 315 states and 704 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:14,519 INFO L93 Difference]: Finished difference Result 602 states and 1215 transitions. [2022-03-15 15:26:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-15 15:26:14,520 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:14,521 INFO L225 Difference]: With dead ends: 602 [2022-03-15 15:26:14,521 INFO L226 Difference]: Without dead ends: 599 [2022-03-15 15:26:14,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3336 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1543, Invalid=10889, Unknown=0, NotChecked=0, Total=12432 [2022-03-15 15:26:14,522 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 399 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:14,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 517 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:26:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-15 15:26:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 321. [2022-03-15 15:26:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 2.2375) internal successors, (716), 320 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 716 transitions. [2022-03-15 15:26:14,527 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 716 transitions. Word has length 21 [2022-03-15 15:26:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:14,527 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 716 transitions. [2022-03-15 15:26:14,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 716 transitions. [2022-03-15 15:26:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:14,527 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:14,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:14,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:14,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:14,743 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:14,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash 528023948, now seen corresponding path program 37 times [2022-03-15 15:26:14,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:14,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234685657] [2022-03-15 15:26:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:14,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:14,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234685657] [2022-03-15 15:26:14,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234685657] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:14,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190925316] [2022-03-15 15:26:14,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:26:14,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:14,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:14,935 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:14,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-15 15:26:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:14,954 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:14,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:15,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:15,904 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190925316] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:15,904 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:15,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:26:15,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875029557] [2022-03-15 15:26:15,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:15,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:26:15,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:15,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:26:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:26:15,906 INFO L87 Difference]: Start difference. First operand 321 states and 716 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:18,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:18,126 INFO L93 Difference]: Finished difference Result 632 states and 1277 transitions. [2022-03-15 15:26:18,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 15:26:18,126 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:18,127 INFO L225 Difference]: With dead ends: 632 [2022-03-15 15:26:18,127 INFO L226 Difference]: Without dead ends: 625 [2022-03-15 15:26:18,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2803 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1446, Invalid=9266, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 15:26:18,128 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 379 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:18,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 562 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 15:26:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-03-15 15:26:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 318. [2022-03-15 15:26:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.2429022082018926) internal successors, (711), 317 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 711 transitions. [2022-03-15 15:26:18,132 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 711 transitions. Word has length 21 [2022-03-15 15:26:18,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:18,132 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 711 transitions. [2022-03-15 15:26:18,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 711 transitions. [2022-03-15 15:26:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:18,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:18,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:18,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:18,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:18,334 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2144384112, now seen corresponding path program 38 times [2022-03-15 15:26:18,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:18,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238276159] [2022-03-15 15:26:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:18,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:18,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238276159] [2022-03-15 15:26:18,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238276159] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:18,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430395344] [2022-03-15 15:26:18,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:26:18,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:18,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:18,535 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:18,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-15 15:26:18,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:26:18,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:18,551 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:18,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:18,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:19,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430395344] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:19,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:19,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:19,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596252195] [2022-03-15 15:26:19,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:19,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:19,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:19,494 INFO L87 Difference]: Start difference. First operand 318 states and 711 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:21,886 INFO L93 Difference]: Finished difference Result 586 states and 1183 transitions. [2022-03-15 15:26:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 15:26:21,887 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:21,888 INFO L225 Difference]: With dead ends: 586 [2022-03-15 15:26:21,888 INFO L226 Difference]: Without dead ends: 583 [2022-03-15 15:26:21,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1196, Invalid=8506, Unknown=0, NotChecked=0, Total=9702 [2022-03-15 15:26:21,888 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 335 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:21,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 529 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:26:21,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-15 15:26:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 320. [2022-03-15 15:26:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 2.2445141065830723) internal successors, (716), 319 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 716 transitions. [2022-03-15 15:26:21,893 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 716 transitions. Word has length 21 [2022-03-15 15:26:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:21,893 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 716 transitions. [2022-03-15 15:26:21,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 716 transitions. [2022-03-15 15:26:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:21,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:21,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:21,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:22,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-03-15 15:26:22,096 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 294900620, now seen corresponding path program 39 times [2022-03-15 15:26:22,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:22,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076147404] [2022-03-15 15:26:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:22,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:22,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076147404] [2022-03-15 15:26:22,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076147404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:22,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327219275] [2022-03-15 15:26:22,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:26:22,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:22,277 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:22,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-15 15:26:22,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:26:22,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:22,294 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:22,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:22,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:23,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327219275] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:23,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:23,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:23,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986437266] [2022-03-15 15:26:23,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:23,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:23,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:23,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:23,232 INFO L87 Difference]: Start difference. First operand 320 states and 716 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:26,128 INFO L93 Difference]: Finished difference Result 622 states and 1249 transitions. [2022-03-15 15:26:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-15 15:26:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:26,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:26,129 INFO L225 Difference]: With dead ends: 622 [2022-03-15 15:26:26,129 INFO L226 Difference]: Without dead ends: 619 [2022-03-15 15:26:26,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3366 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1529, Invalid=10903, Unknown=0, NotChecked=0, Total=12432 [2022-03-15 15:26:26,130 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 367 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:26,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 633 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:26:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-03-15 15:26:26,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 329. [2022-03-15 15:26:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 2.2408536585365852) internal successors, (735), 328 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 735 transitions. [2022-03-15 15:26:26,135 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 735 transitions. Word has length 21 [2022-03-15 15:26:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:26,135 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 735 transitions. [2022-03-15 15:26:26,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 735 transitions. [2022-03-15 15:26:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:26,136 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:26,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:26,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:26,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:26,352 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 287577800, now seen corresponding path program 40 times [2022-03-15 15:26:26,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:26,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485960289] [2022-03-15 15:26:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:26,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:26,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485960289] [2022-03-15 15:26:26,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485960289] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:26,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106214304] [2022-03-15 15:26:26,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:26:26,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:26,542 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:26,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:26:26,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:26,563 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:26,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:26,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-15 15:26:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:27,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:27,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106214304] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:27,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:27,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:26:27,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764527157] [2022-03-15 15:26:27,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:27,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:26:27,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:26:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1939, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:26:27,474 INFO L87 Difference]: Start difference. First operand 329 states and 735 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:29,856 INFO L93 Difference]: Finished difference Result 650 states and 1313 transitions. [2022-03-15 15:26:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 15:26:29,856 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:29,858 INFO L225 Difference]: With dead ends: 650 [2022-03-15 15:26:29,858 INFO L226 Difference]: Without dead ends: 643 [2022-03-15 15:26:29,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2836 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1436, Invalid=9276, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 15:26:29,859 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 373 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:29,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 683 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:26:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-03-15 15:26:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 328. [2022-03-15 15:26:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.2446483180428136) internal successors, (734), 327 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 734 transitions. [2022-03-15 15:26:29,879 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 734 transitions. Word has length 21 [2022-03-15 15:26:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:29,879 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 734 transitions. [2022-03-15 15:26:29,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 734 transitions. [2022-03-15 15:26:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:29,880 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:29,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:29,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:30,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:30,093 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1038619532, now seen corresponding path program 41 times [2022-03-15 15:26:30,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:30,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494851009] [2022-03-15 15:26:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:30,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:30,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:30,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494851009] [2022-03-15 15:26:30,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494851009] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:30,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422280423] [2022-03-15 15:26:30,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:26:30,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:30,268 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:30,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-15 15:26:30,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:26:30,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:30,286 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:30,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:30,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:31,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422280423] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:31,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:31,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:31,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004141906] [2022-03-15 15:26:31,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:31,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:31,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:31,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2022, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:31,228 INFO L87 Difference]: Start difference. First operand 328 states and 734 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:35,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:35,392 INFO L93 Difference]: Finished difference Result 663 states and 1340 transitions. [2022-03-15 15:26:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-15 15:26:35,393 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:35,394 INFO L225 Difference]: With dead ends: 663 [2022-03-15 15:26:35,394 INFO L226 Difference]: Without dead ends: 660 [2022-03-15 15:26:35,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5360 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2300, Invalid=15790, Unknown=0, NotChecked=0, Total=18090 [2022-03-15 15:26:35,395 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 352 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:35,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 645 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:26:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-03-15 15:26:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 331. [2022-03-15 15:26:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.2454545454545456) internal successors, (741), 330 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 741 transitions. [2022-03-15 15:26:35,400 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 741 transitions. Word has length 21 [2022-03-15 15:26:35,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:35,400 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 741 transitions. [2022-03-15 15:26:35,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:35,400 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 741 transitions. [2022-03-15 15:26:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:35,400 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:35,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:35,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:35,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-15 15:26:35,615 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:35,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1031296712, now seen corresponding path program 42 times [2022-03-15 15:26:35,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:35,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522129100] [2022-03-15 15:26:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:35,806 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:35,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522129100] [2022-03-15 15:26:35,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522129100] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:35,806 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34266717] [2022-03-15 15:26:35,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:26:35,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:35,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:35,807 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:35,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-15 15:26:35,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:26:35,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:35,826 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:35,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:36,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:36,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34266717] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:36,784 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:36,784 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:26:36,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641081745] [2022-03-15 15:26:36,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:36,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:26:36,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:36,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:26:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1928, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:26:36,785 INFO L87 Difference]: Start difference. First operand 331 states and 741 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:40,511 INFO L93 Difference]: Finished difference Result 690 states and 1388 transitions. [2022-03-15 15:26:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 15:26:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:40,512 INFO L225 Difference]: With dead ends: 690 [2022-03-15 15:26:40,512 INFO L226 Difference]: Without dead ends: 683 [2022-03-15 15:26:40,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2330, Invalid=14700, Unknown=0, NotChecked=0, Total=17030 [2022-03-15 15:26:40,513 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 466 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:40,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 611 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:26:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-15 15:26:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 332. [2022-03-15 15:26:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.2598187311178246) internal successors, (748), 331 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 748 transitions. [2022-03-15 15:26:40,518 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 748 transitions. Word has length 21 [2022-03-15 15:26:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:40,518 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 748 transitions. [2022-03-15 15:26:40,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 748 transitions. [2022-03-15 15:26:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:40,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:40,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:40,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:40,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-03-15 15:26:40,719 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:40,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1152381240, now seen corresponding path program 43 times [2022-03-15 15:26:40,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:40,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14899684] [2022-03-15 15:26:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:40,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:40,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:40,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14899684] [2022-03-15 15:26:40,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14899684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:40,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019533254] [2022-03-15 15:26:40,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:26:40,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:40,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:40,896 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:40,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-15 15:26:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:40,915 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:40,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:41,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:41,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019533254] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:41,847 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:41,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:26:41,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822888942] [2022-03-15 15:26:41,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:41,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:26:41,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:26:41,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:26:41,847 INFO L87 Difference]: Start difference. First operand 332 states and 748 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:45,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:45,062 INFO L93 Difference]: Finished difference Result 700 states and 1430 transitions. [2022-03-15 15:26:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-15 15:26:45,062 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:45,063 INFO L225 Difference]: With dead ends: 700 [2022-03-15 15:26:45,063 INFO L226 Difference]: Without dead ends: 693 [2022-03-15 15:26:45,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4409 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2207, Invalid=13045, Unknown=0, NotChecked=0, Total=15252 [2022-03-15 15:26:45,064 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 392 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:45,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 600 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:26:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-03-15 15:26:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 330. [2022-03-15 15:26:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.2492401215805473) internal successors, (740), 329 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 740 transitions. [2022-03-15 15:26:45,077 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 740 transitions. Word has length 21 [2022-03-15 15:26:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:45,077 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 740 transitions. [2022-03-15 15:26:45,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 740 transitions. [2022-03-15 15:26:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:45,078 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:45,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:45,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-03-15 15:26:45,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:45,278 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:45,279 INFO L85 PathProgramCache]: Analyzing trace with hash 914993654, now seen corresponding path program 44 times [2022-03-15 15:26:45,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:45,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020232255] [2022-03-15 15:26:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:45,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:45,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:45,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020232255] [2022-03-15 15:26:45,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020232255] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:45,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293601690] [2022-03-15 15:26:45,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:26:45,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:45,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:45,457 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:45,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-15 15:26:45,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:26:45,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:45,475 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:45,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:45,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:46,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293601690] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:46,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:46,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:46,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688715412] [2022-03-15 15:26:46,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:46,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:46,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:46,413 INFO L87 Difference]: Start difference. First operand 330 states and 740 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:49,418 INFO L93 Difference]: Finished difference Result 632 states and 1283 transitions. [2022-03-15 15:26:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-15 15:26:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:49,419 INFO L225 Difference]: With dead ends: 632 [2022-03-15 15:26:49,419 INFO L226 Difference]: Without dead ends: 629 [2022-03-15 15:26:49,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1659, Invalid=10997, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 15:26:49,420 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 368 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:49,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 605 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:26:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-03-15 15:26:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 331. [2022-03-15 15:26:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.2484848484848485) internal successors, (742), 330 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 742 transitions. [2022-03-15 15:26:49,425 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 742 transitions. Word has length 21 [2022-03-15 15:26:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:49,425 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 742 transitions. [2022-03-15 15:26:49,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 742 transitions. [2022-03-15 15:26:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:49,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:49,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:49,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:49,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:49,642 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:49,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash 907670834, now seen corresponding path program 45 times [2022-03-15 15:26:49,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:49,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442438434] [2022-03-15 15:26:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:49,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:49,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442438434] [2022-03-15 15:26:49,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442438434] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:49,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990899043] [2022-03-15 15:26:49,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:26:49,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:49,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:49,855 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:49,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-15 15:26:49,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:26:49,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:49,875 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:49,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:50,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:50,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990899043] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:50,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:50,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:26:50,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680323842] [2022-03-15 15:26:50,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:50,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:26:50,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:50,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:26:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1932, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:26:50,789 INFO L87 Difference]: Start difference. First operand 331 states and 742 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:53,276 INFO L93 Difference]: Finished difference Result 643 states and 1308 transitions. [2022-03-15 15:26:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 15:26:53,276 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:53,277 INFO L225 Difference]: With dead ends: 643 [2022-03-15 15:26:53,277 INFO L226 Difference]: Without dead ends: 636 [2022-03-15 15:26:53,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1525, Invalid=9187, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 15:26:53,278 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 351 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:53,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 647 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:26:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-03-15 15:26:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 336. [2022-03-15 15:26:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.262686567164179) internal successors, (758), 335 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 758 transitions. [2022-03-15 15:26:53,283 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 758 transitions. Word has length 21 [2022-03-15 15:26:53,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:53,283 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 758 transitions. [2022-03-15 15:26:53,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:53,283 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 758 transitions. [2022-03-15 15:26:53,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:53,283 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:53,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:53,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:53,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-03-15 15:26:53,484 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:53,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1276007118, now seen corresponding path program 46 times [2022-03-15 15:26:53,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:53,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561065708] [2022-03-15 15:26:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:53,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:53,663 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:53,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561065708] [2022-03-15 15:26:53,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561065708] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:53,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188786120] [2022-03-15 15:26:53,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:26:53,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:53,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:53,664 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:53,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-15 15:26:53,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:26:53,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:53,694 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:53,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:54,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:54,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188786120] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:54,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:54,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:26:54,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150906470] [2022-03-15 15:26:54,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:54,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:26:54,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:26:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:26:54,604 INFO L87 Difference]: Start difference. First operand 336 states and 758 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:26:57,361 INFO L93 Difference]: Finished difference Result 660 states and 1351 transitions. [2022-03-15 15:26:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 15:26:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:26:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:26:57,362 INFO L225 Difference]: With dead ends: 660 [2022-03-15 15:26:57,362 INFO L226 Difference]: Without dead ends: 646 [2022-03-15 15:26:57,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3430 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1786, Invalid=10870, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 15:26:57,363 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 399 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:26:57,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 564 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:26:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-03-15 15:26:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 332. [2022-03-15 15:26:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.2477341389728096) internal successors, (744), 331 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 744 transitions. [2022-03-15 15:26:57,367 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 744 transitions. Word has length 21 [2022-03-15 15:26:57,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:26:57,367 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 744 transitions. [2022-03-15 15:26:57,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:26:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 744 transitions. [2022-03-15 15:26:57,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:26:57,368 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:26:57,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:26:57,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-15 15:26:57,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:57,568 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:26:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:26:57,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2956536, now seen corresponding path program 47 times [2022-03-15 15:26:57,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:26:57,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261714983] [2022-03-15 15:26:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:26:57,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:26:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:26:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:57,783 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:26:57,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261714983] [2022-03-15 15:26:57,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261714983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:26:57,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138078066] [2022-03-15 15:26:57,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:26:57,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:26:57,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:26:57,784 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:26:57,804 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:26:57,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:26:57,805 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:26:57,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:26:57,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-15 15:26:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:58,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:26:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:26:58,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138078066] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:26:58,772 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:26:58,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:26:58,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134225996] [2022-03-15 15:26:58,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:26:58,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:26:58,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:26:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:26:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:26:58,773 INFO L87 Difference]: Start difference. First operand 332 states and 744 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:01,964 INFO L93 Difference]: Finished difference Result 625 states and 1290 transitions. [2022-03-15 15:27:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 15:27:01,964 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:01,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:01,965 INFO L225 Difference]: With dead ends: 625 [2022-03-15 15:27:01,965 INFO L226 Difference]: Without dead ends: 622 [2022-03-15 15:27:01,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4130 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1966, Invalid=12796, Unknown=0, NotChecked=0, Total=14762 [2022-03-15 15:27:01,967 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 340 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:01,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 519 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:27:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-03-15 15:27:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 335. [2022-03-15 15:27:01,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.248502994011976) internal successors, (751), 334 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 751 transitions. [2022-03-15 15:27:01,975 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 751 transitions. Word has length 21 [2022-03-15 15:27:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:01,975 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 751 transitions. [2022-03-15 15:27:01,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 751 transitions. [2022-03-15 15:27:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:01,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:01,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:01,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-15 15:27:02,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:02,177 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:02,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash -10279356, now seen corresponding path program 48 times [2022-03-15 15:27:02,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:02,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135681001] [2022-03-15 15:27:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:02,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:02,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135681001] [2022-03-15 15:27:02,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135681001] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:02,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033273330] [2022-03-15 15:27:02,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:27:02,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:02,353 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:02,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-15 15:27:02,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:27:02,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:02,373 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:02,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:02,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:03,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033273330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:03,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:03,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:03,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883693605] [2022-03-15 15:27:03,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:03,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:03,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:03,277 INFO L87 Difference]: Start difference. First operand 335 states and 751 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:05,984 INFO L93 Difference]: Finished difference Result 642 states and 1320 transitions. [2022-03-15 15:27:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-15 15:27:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:05,985 INFO L225 Difference]: With dead ends: 642 [2022-03-15 15:27:05,985 INFO L226 Difference]: Without dead ends: 635 [2022-03-15 15:27:05,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3541 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1901, Invalid=10981, Unknown=0, NotChecked=0, Total=12882 [2022-03-15 15:27:05,986 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 370 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:05,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 636 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:27:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-03-15 15:27:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 336. [2022-03-15 15:27:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.262686567164179) internal successors, (758), 335 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 758 transitions. [2022-03-15 15:27:05,990 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 758 transitions. Word has length 21 [2022-03-15 15:27:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:05,990 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 758 transitions. [2022-03-15 15:27:05,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 758 transitions. [2022-03-15 15:27:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:05,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:05,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:06,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-15 15:27:06,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-03-15 15:27:06,191 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2101009988, now seen corresponding path program 49 times [2022-03-15 15:27:06,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:06,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979378603] [2022-03-15 15:27:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:06,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:06,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:06,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979378603] [2022-03-15 15:27:06,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979378603] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:06,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235305902] [2022-03-15 15:27:06,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:27:06,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:06,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:06,368 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:06,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-15 15:27:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:06,387 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:06,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:06,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:07,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235305902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:07,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:07,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:07,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090715908] [2022-03-15 15:27:07,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:07,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:07,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:07,297 INFO L87 Difference]: Start difference. First operand 336 states and 758 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:09,764 INFO L93 Difference]: Finished difference Result 643 states and 1322 transitions. [2022-03-15 15:27:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 15:27:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:09,765 INFO L225 Difference]: With dead ends: 643 [2022-03-15 15:27:09,765 INFO L226 Difference]: Without dead ends: 636 [2022-03-15 15:27:09,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2749 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1585, Invalid=9127, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 15:27:09,766 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 405 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:09,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 631 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:27:09,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-03-15 15:27:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 332. [2022-03-15 15:27:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 2.2477341389728096) internal successors, (744), 331 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 744 transitions. [2022-03-15 15:27:09,771 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 744 transitions. Word has length 21 [2022-03-15 15:27:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:09,771 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 744 transitions. [2022-03-15 15:27:09,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 744 transitions. [2022-03-15 15:27:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:09,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:09,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:09,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-15 15:27:09,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:09,972 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:09,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1610494580, now seen corresponding path program 50 times [2022-03-15 15:27:09,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:09,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121224059] [2022-03-15 15:27:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:09,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:10,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:10,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121224059] [2022-03-15 15:27:10,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121224059] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:10,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7885772] [2022-03-15 15:27:10,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:27:10,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:10,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:10,155 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:10,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-15 15:27:10,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:27:10,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:10,173 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:10,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:10,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:11,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7885772] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:11,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:11,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:27:11,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880915769] [2022-03-15 15:27:11,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:11,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:27:11,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:27:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:27:11,127 INFO L87 Difference]: Start difference. First operand 332 states and 744 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:12,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:12,747 INFO L93 Difference]: Finished difference Result 571 states and 1169 transitions. [2022-03-15 15:27:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 15:27:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:12,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:12,748 INFO L225 Difference]: With dead ends: 571 [2022-03-15 15:27:12,748 INFO L226 Difference]: Without dead ends: 568 [2022-03-15 15:27:12,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=923, Invalid=6559, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 15:27:12,749 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 199 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:12,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 541 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 15:27:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-03-15 15:27:12,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 328. [2022-03-15 15:27:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.2477064220183487) internal successors, (735), 327 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-03-15 15:27:12,753 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 21 [2022-03-15 15:27:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:12,753 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-03-15 15:27:12,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-03-15 15:27:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:12,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:12,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:12,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-03-15 15:27:12,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:12,955 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash 955665800, now seen corresponding path program 51 times [2022-03-15 15:27:12,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:12,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086286935] [2022-03-15 15:27:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:13,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:13,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086286935] [2022-03-15 15:27:13,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086286935] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:13,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102102586] [2022-03-15 15:27:13,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:27:13,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:13,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:13,180 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:13,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-15 15:27:13,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:27:13,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:13,199 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:13,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:13,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:14,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102102586] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:14,186 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:14,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:27:14,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116793336] [2022-03-15 15:27:14,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:14,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:27:14,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:14,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:27:14,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:27:14,187 INFO L87 Difference]: Start difference. First operand 328 states and 735 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:17,887 INFO L93 Difference]: Finished difference Result 693 states and 1409 transitions. [2022-03-15 15:27:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 15:27:17,887 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:17,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:17,888 INFO L225 Difference]: With dead ends: 693 [2022-03-15 15:27:17,888 INFO L226 Difference]: Without dead ends: 687 [2022-03-15 15:27:17,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4877 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2304, Invalid=14466, Unknown=0, NotChecked=0, Total=16770 [2022-03-15 15:27:17,889 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 395 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:17,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 680 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:27:17,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-15 15:27:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 333. [2022-03-15 15:27:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 2.25) internal successors, (747), 332 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 747 transitions. [2022-03-15 15:27:17,894 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 747 transitions. Word has length 21 [2022-03-15 15:27:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 747 transitions. [2022-03-15 15:27:17,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 747 transitions. [2022-03-15 15:27:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:17,895 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:17,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:17,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-03-15 15:27:18,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-03-15 15:27:18,096 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash 948342980, now seen corresponding path program 52 times [2022-03-15 15:27:18,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:18,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55606057] [2022-03-15 15:27:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:18,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:18,275 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:18,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55606057] [2022-03-15 15:27:18,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55606057] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:18,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646650065] [2022-03-15 15:27:18,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:27:18,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:18,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:18,276 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:18,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-15 15:27:18,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:27:18,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:18,294 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:18,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:18,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:19,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646650065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:19,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:19,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:19,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260809891] [2022-03-15 15:27:19,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:19,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:19,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:19,216 INFO L87 Difference]: Start difference. First operand 333 states and 747 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:22,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:22,528 INFO L93 Difference]: Finished difference Result 732 states and 1481 transitions. [2022-03-15 15:27:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 15:27:22,528 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:22,529 INFO L225 Difference]: With dead ends: 732 [2022-03-15 15:27:22,529 INFO L226 Difference]: Without dead ends: 718 [2022-03-15 15:27:22,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4800 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2344, Invalid=14168, Unknown=0, NotChecked=0, Total=16512 [2022-03-15 15:27:22,530 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 386 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:22,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 683 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:27:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-03-15 15:27:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 342. [2022-03-15 15:27:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.2668621700879767) internal successors, (773), 341 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 773 transitions. [2022-03-15 15:27:22,535 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 773 transitions. Word has length 21 [2022-03-15 15:27:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:22,535 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 773 transitions. [2022-03-15 15:27:22,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 773 transitions. [2022-03-15 15:27:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:22,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:22,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:22,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-15 15:27:22,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:22,739 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:22,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1235334972, now seen corresponding path program 53 times [2022-03-15 15:27:22,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:22,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80464558] [2022-03-15 15:27:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:22,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:22,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80464558] [2022-03-15 15:27:22,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80464558] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:22,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641638038] [2022-03-15 15:27:22,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:27:22,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:22,922 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:22,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-15 15:27:22,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:27:22,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:22,941 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:22,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:23,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:23,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641638038] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:23,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:23,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:23,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927680323] [2022-03-15 15:27:23,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:23,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:23,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:23,875 INFO L87 Difference]: Start difference. First operand 342 states and 773 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:27,836 INFO L93 Difference]: Finished difference Result 740 states and 1494 transitions. [2022-03-15 15:27:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-15 15:27:27,837 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:27,838 INFO L225 Difference]: With dead ends: 740 [2022-03-15 15:27:27,838 INFO L226 Difference]: Without dead ends: 719 [2022-03-15 15:27:27,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5585 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2646, Invalid=16260, Unknown=0, NotChecked=0, Total=18906 [2022-03-15 15:27:27,839 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 415 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:27,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 801 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:27:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-03-15 15:27:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 340. [2022-03-15 15:27:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 2.256637168141593) internal successors, (765), 339 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 765 transitions. [2022-03-15 15:27:27,844 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 765 transitions. Word has length 21 [2022-03-15 15:27:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:27,844 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 765 transitions. [2022-03-15 15:27:27,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 765 transitions. [2022-03-15 15:27:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:27,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:27,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:27,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-03-15 15:27:28,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:28,045 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1469937860, now seen corresponding path program 54 times [2022-03-15 15:27:28,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:28,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045274791] [2022-03-15 15:27:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:28,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:28,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045274791] [2022-03-15 15:27:28,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045274791] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:28,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757438300] [2022-03-15 15:27:28,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:27:28,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:28,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:28,224 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:28,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-15 15:27:28,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:27:28,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:28,242 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:28,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:28,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:29,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757438300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:29,167 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:29,167 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:29,167 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967574642] [2022-03-15 15:27:29,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:29,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:29,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:29,168 INFO L87 Difference]: Start difference. First operand 340 states and 765 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:31,529 INFO L93 Difference]: Finished difference Result 641 states and 1317 transitions. [2022-03-15 15:27:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-15 15:27:31,529 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:31,530 INFO L225 Difference]: With dead ends: 641 [2022-03-15 15:27:31,530 INFO L226 Difference]: Without dead ends: 627 [2022-03-15 15:27:31,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1746, Invalid=10464, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 15:27:31,531 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 259 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:31,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 740 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:27:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-03-15 15:27:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 340. [2022-03-15 15:27:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 2.256637168141593) internal successors, (765), 339 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 765 transitions. [2022-03-15 15:27:31,535 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 765 transitions. Word has length 21 [2022-03-15 15:27:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:31,535 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 765 transitions. [2022-03-15 15:27:31,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 765 transitions. [2022-03-15 15:27:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:31,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:31,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-15 15:27:31,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:31,745 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:31,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash -657900934, now seen corresponding path program 55 times [2022-03-15 15:27:31,746 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:31,746 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304457629] [2022-03-15 15:27:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:31,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:31,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:31,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304457629] [2022-03-15 15:27:31,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304457629] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:31,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200091928] [2022-03-15 15:27:31,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:27:31,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:31,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:31,925 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:31,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-15 15:27:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:31,942 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:31,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:32,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:32,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200091928] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:32,887 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:32,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:27:32,887 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838389308] [2022-03-15 15:27:32,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:27:32,887 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:32,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:27:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:27:32,888 INFO L87 Difference]: Start difference. First operand 340 states and 765 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:36,211 INFO L93 Difference]: Finished difference Result 686 states and 1378 transitions. [2022-03-15 15:27:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 15:27:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:36,212 INFO L225 Difference]: With dead ends: 686 [2022-03-15 15:27:36,213 INFO L226 Difference]: Without dead ends: 680 [2022-03-15 15:27:36,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4210 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2061, Invalid=12945, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 15:27:36,213 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 371 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:36,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 631 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:27:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-15 15:27:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 341. [2022-03-15 15:27:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 2.2558823529411764) internal successors, (767), 340 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 767 transitions. [2022-03-15 15:27:36,218 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 767 transitions. Word has length 21 [2022-03-15 15:27:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:36,218 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 767 transitions. [2022-03-15 15:27:36,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 767 transitions. [2022-03-15 15:27:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:36,219 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:36,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:36,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-15 15:27:36,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2022-03-15 15:27:36,420 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -665223754, now seen corresponding path program 56 times [2022-03-15 15:27:36,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:36,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362395568] [2022-03-15 15:27:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:36,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:36,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:36,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362395568] [2022-03-15 15:27:36,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362395568] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:36,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653552636] [2022-03-15 15:27:36,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:27:36,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:36,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:36,596 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:36,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-15 15:27:36,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:27:36,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:36,614 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:36,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:37,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:37,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653552636] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:37,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:37,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:37,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873702230] [2022-03-15 15:27:37,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:37,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:37,530 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:37,530 INFO L87 Difference]: Start difference. First operand 341 states and 767 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:40,110 INFO L93 Difference]: Finished difference Result 702 states and 1416 transitions. [2022-03-15 15:27:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 15:27:40,110 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:40,111 INFO L225 Difference]: With dead ends: 702 [2022-03-15 15:27:40,111 INFO L226 Difference]: Without dead ends: 688 [2022-03-15 15:27:40,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3417 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1890, Invalid=10766, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 15:27:40,112 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 369 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:40,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 597 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:27:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-03-15 15:27:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 346. [2022-03-15 15:27:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.2695652173913046) internal successors, (783), 345 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 783 transitions. [2022-03-15 15:27:40,122 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 783 transitions. Word has length 21 [2022-03-15 15:27:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:40,122 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 783 transitions. [2022-03-15 15:27:40,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 783 transitions. [2022-03-15 15:27:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:40,123 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:40,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:40,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-03-15 15:27:40,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:40,323 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1446065590, now seen corresponding path program 57 times [2022-03-15 15:27:40,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:40,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385816426] [2022-03-15 15:27:40,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:40,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:40,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:40,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385816426] [2022-03-15 15:27:40,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385816426] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:40,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931028978] [2022-03-15 15:27:40,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:27:40,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:40,511 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:40,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-15 15:27:40,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:27:40,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:40,529 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:40,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:40,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:41,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931028978] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:41,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:41,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:41,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852350445] [2022-03-15 15:27:41,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:41,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:41,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:41,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:41,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:41,441 INFO L87 Difference]: Start difference. First operand 346 states and 783 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:44,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:44,532 INFO L93 Difference]: Finished difference Result 713 states and 1452 transitions. [2022-03-15 15:27:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 15:27:44,532 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:44,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:44,533 INFO L225 Difference]: With dead ends: 713 [2022-03-15 15:27:44,533 INFO L226 Difference]: Without dead ends: 692 [2022-03-15 15:27:44,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2165, Invalid=12355, Unknown=0, NotChecked=0, Total=14520 [2022-03-15 15:27:44,534 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 374 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:44,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 740 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:27:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-03-15 15:27:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 344. [2022-03-15 15:27:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 2.253644314868805) internal successors, (773), 343 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 773 transitions. [2022-03-15 15:27:44,539 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 773 transitions. Word has length 21 [2022-03-15 15:27:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:44,539 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 773 transitions. [2022-03-15 15:27:44,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 773 transitions. [2022-03-15 15:27:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:44,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:44,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:44,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-03-15 15:27:44,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:44,756 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1575851124, now seen corresponding path program 58 times [2022-03-15 15:27:44,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:44,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914545563] [2022-03-15 15:27:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:44,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:44,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:44,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914545563] [2022-03-15 15:27:44,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914545563] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:44,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3960255] [2022-03-15 15:27:44,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:27:44,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:44,937 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:44,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-15 15:27:44,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:27:44,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:44,955 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:44,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:45,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:45,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3960255] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:45,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:45,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:27:45,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607388765] [2022-03-15 15:27:45,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:45,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:27:45,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:45,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:27:45,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:27:45,902 INFO L87 Difference]: Start difference. First operand 344 states and 773 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:49,453 INFO L93 Difference]: Finished difference Result 676 states and 1388 transitions. [2022-03-15 15:27:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 15:27:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:49,454 INFO L225 Difference]: With dead ends: 676 [2022-03-15 15:27:49,455 INFO L226 Difference]: Without dead ends: 670 [2022-03-15 15:27:49,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2329, Invalid=14963, Unknown=0, NotChecked=0, Total=17292 [2022-03-15 15:27:49,456 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 387 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:49,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 568 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:27:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-15 15:27:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 348. [2022-03-15 15:27:49,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 2.2564841498559076) internal successors, (783), 347 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 783 transitions. [2022-03-15 15:27:49,460 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 783 transitions. Word has length 21 [2022-03-15 15:27:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:49,460 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 783 transitions. [2022-03-15 15:27:49,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 783 transitions. [2022-03-15 15:27:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:49,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:49,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:49,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-03-15 15:27:49,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:49,661 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:49,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1583173944, now seen corresponding path program 59 times [2022-03-15 15:27:49,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:49,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035668147] [2022-03-15 15:27:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:49,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:49,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:49,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035668147] [2022-03-15 15:27:49,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035668147] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:49,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580647650] [2022-03-15 15:27:49,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:27:49,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:49,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:49,839 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:49,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-15 15:27:49,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:27:49,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:49,857 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:49,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:50,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:50,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580647650] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:50,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:50,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:50,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127604054] [2022-03-15 15:27:50,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:50,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:50,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1910, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:50,778 INFO L87 Difference]: Start difference. First operand 348 states and 783 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:53,941 INFO L93 Difference]: Finished difference Result 713 states and 1453 transitions. [2022-03-15 15:27:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 15:27:53,941 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:53,942 INFO L225 Difference]: With dead ends: 713 [2022-03-15 15:27:53,942 INFO L226 Difference]: Without dead ends: 699 [2022-03-15 15:27:53,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4649 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2405, Invalid=13597, Unknown=0, NotChecked=0, Total=16002 [2022-03-15 15:27:53,943 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 313 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:53,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 698 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:27:53,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-03-15 15:27:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 350. [2022-03-15 15:27:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.2722063037249285) internal successors, (793), 349 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 793 transitions. [2022-03-15 15:27:53,948 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 793 transitions. Word has length 21 [2022-03-15 15:27:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:53,948 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 793 transitions. [2022-03-15 15:27:53,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 793 transitions. [2022-03-15 15:27:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:53,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:53,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:53,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-15 15:27:54,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:54,150 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash 528115400, now seen corresponding path program 60 times [2022-03-15 15:27:54,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:54,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207721168] [2022-03-15 15:27:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:54,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:54,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:54,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207721168] [2022-03-15 15:27:54,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207721168] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:54,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371618116] [2022-03-15 15:27:54,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:27:54,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:54,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:54,327 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:54,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-15 15:27:54,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:27:54,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:27:54,345 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:54,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:54,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:55,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371618116] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:55,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:55,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:27:55,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722516042] [2022-03-15 15:27:55,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:55,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:27:55,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:55,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:27:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1901, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:27:55,274 INFO L87 Difference]: Start difference. First operand 350 states and 793 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:27:57,826 INFO L93 Difference]: Finished difference Result 692 states and 1419 transitions. [2022-03-15 15:27:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-15 15:27:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:27:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:27:57,827 INFO L225 Difference]: With dead ends: 692 [2022-03-15 15:27:57,827 INFO L226 Difference]: Without dead ends: 678 [2022-03-15 15:27:57,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1977, Invalid=10679, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 15:27:57,828 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 324 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:27:57,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 601 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:27:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-03-15 15:27:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 342. [2022-03-15 15:27:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.2551319648093844) internal successors, (769), 341 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 769 transitions. [2022-03-15 15:27:57,832 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 769 transitions. Word has length 21 [2022-03-15 15:27:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:27:57,833 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 769 transitions. [2022-03-15 15:27:57,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:27:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 769 transitions. [2022-03-15 15:27:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:27:57,833 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:27:57,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:27:57,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-15 15:27:58,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-03-15 15:27:58,034 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:27:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:27:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1456163560, now seen corresponding path program 61 times [2022-03-15 15:27:58,034 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:27:58,034 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384891340] [2022-03-15 15:27:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:27:58,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:27:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:58,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:27:58,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384891340] [2022-03-15 15:27:58,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384891340] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:27:58,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024596766] [2022-03-15 15:27:58,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:27:58,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:27:58,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:27:58,237 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:27:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:27:58,268 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:27:58,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:27:58,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-15 15:27:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:58,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:27:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:27:59,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024596766] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:27:59,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:27:59,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:27:59,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019951117] [2022-03-15 15:27:59,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:27:59,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:27:59,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:27:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:27:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:27:59,186 INFO L87 Difference]: Start difference. First operand 342 states and 769 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:01,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:01,350 INFO L93 Difference]: Finished difference Result 654 states and 1310 transitions. [2022-03-15 15:28:01,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 15:28:01,350 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:01,351 INFO L225 Difference]: With dead ends: 654 [2022-03-15 15:28:01,351 INFO L226 Difference]: Without dead ends: 651 [2022-03-15 15:28:01,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2618 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1159, Invalid=8941, Unknown=0, NotChecked=0, Total=10100 [2022-03-15 15:28:01,352 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 289 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:01,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 677 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:28:01,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-03-15 15:28:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 347. [2022-03-15 15:28:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 2.254335260115607) internal successors, (780), 346 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 780 transitions. [2022-03-15 15:28:01,357 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 780 transitions. Word has length 21 [2022-03-15 15:28:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:01,357 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 780 transitions. [2022-03-15 15:28:01,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 780 transitions. [2022-03-15 15:28:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:01,367 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:01,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:01,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-15 15:28:01,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-03-15 15:28:01,575 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash -313253948, now seen corresponding path program 62 times [2022-03-15 15:28:01,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:01,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132492108] [2022-03-15 15:28:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:01,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:01,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132492108] [2022-03-15 15:28:01,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132492108] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:01,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537337849] [2022-03-15 15:28:01,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:28:01,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:01,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:01,764 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:01,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-15 15:28:01,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:28:01,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:01,787 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:01,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:02,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:02,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537337849] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:02,690 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:02,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:02,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574386723] [2022-03-15 15:28:02,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:02,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:02,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:02,691 INFO L87 Difference]: Start difference. First operand 347 states and 780 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:05,232 INFO L93 Difference]: Finished difference Result 665 states and 1341 transitions. [2022-03-15 15:28:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 15:28:05,232 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:05,233 INFO L225 Difference]: With dead ends: 665 [2022-03-15 15:28:05,233 INFO L226 Difference]: Without dead ends: 662 [2022-03-15 15:28:05,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2984 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1256, Invalid=9874, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 15:28:05,234 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 306 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:05,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 718 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:28:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-03-15 15:28:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 349. [2022-03-15 15:28:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.2528735632183907) internal successors, (784), 348 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-03-15 15:28:05,238 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-03-15 15:28:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:05,239 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-03-15 15:28:05,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-03-15 15:28:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:05,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:05,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:05,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-15 15:28:05,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:05,454 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:05,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:05,455 INFO L85 PathProgramCache]: Analyzing trace with hash 578920758, now seen corresponding path program 63 times [2022-03-15 15:28:05,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:05,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039972504] [2022-03-15 15:28:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:05,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:05,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:05,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039972504] [2022-03-15 15:28:05,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039972504] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:05,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101774342] [2022-03-15 15:28:05,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:28:05,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:05,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:05,645 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:05,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-15 15:28:05,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:28:05,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:05,663 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:05,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:06,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:06,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101774342] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:06,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:06,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:06,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780291651] [2022-03-15 15:28:06,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:06,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:06,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:06,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:06,572 INFO L87 Difference]: Start difference. First operand 349 states and 784 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:08,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:08,804 INFO L93 Difference]: Finished difference Result 666 states and 1344 transitions. [2022-03-15 15:28:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 15:28:08,804 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:08,805 INFO L225 Difference]: With dead ends: 666 [2022-03-15 15:28:08,805 INFO L226 Difference]: Without dead ends: 663 [2022-03-15 15:28:08,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2569 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1145, Invalid=8755, Unknown=0, NotChecked=0, Total=9900 [2022-03-15 15:28:08,806 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 295 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:08,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 829 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:28:08,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-03-15 15:28:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 351. [2022-03-15 15:28:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.2514285714285713) internal successors, (788), 350 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-03-15 15:28:08,810 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-03-15 15:28:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:08,810 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-03-15 15:28:08,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-03-15 15:28:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:08,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:08,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:08,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-15 15:28:09,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:09,011 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1276761806, now seen corresponding path program 64 times [2022-03-15 15:28:09,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:09,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032929674] [2022-03-15 15:28:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:09,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:09,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:09,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032929674] [2022-03-15 15:28:09,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032929674] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:09,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208864119] [2022-03-15 15:28:09,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:28:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:09,192 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:09,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-15 15:28:09,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:28:09,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:09,208 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:09,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:09,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:10,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208864119] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:10,108 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:10,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:10,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043782028] [2022-03-15 15:28:10,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:10,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:10,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:10,108 INFO L87 Difference]: Start difference. First operand 351 states and 788 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:12,787 INFO L93 Difference]: Finished difference Result 693 states and 1412 transitions. [2022-03-15 15:28:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-15 15:28:12,788 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:12,789 INFO L225 Difference]: With dead ends: 693 [2022-03-15 15:28:12,789 INFO L226 Difference]: Without dead ends: 690 [2022-03-15 15:28:12,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1503, Invalid=11607, Unknown=0, NotChecked=0, Total=13110 [2022-03-15 15:28:12,789 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 321 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:12,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 616 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:28:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-15 15:28:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 345. [2022-03-15 15:28:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.255813953488372) internal successors, (776), 344 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 776 transitions. [2022-03-15 15:28:12,794 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 776 transitions. Word has length 21 [2022-03-15 15:28:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:12,794 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 776 transitions. [2022-03-15 15:28:12,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 776 transitions. [2022-03-15 15:28:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:12,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:12,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:12,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-03-15 15:28:12,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-03-15 15:28:12,996 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:12,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:12,996 INFO L85 PathProgramCache]: Analyzing trace with hash 812346952, now seen corresponding path program 65 times [2022-03-15 15:28:12,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:12,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927477699] [2022-03-15 15:28:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:12,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:13,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:13,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927477699] [2022-03-15 15:28:13,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927477699] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:13,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457369473] [2022-03-15 15:28:13,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:28:13,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:13,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:13,181 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:13,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-15 15:28:13,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:28:13,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:13,197 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:13,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:13,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:14,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457369473] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:14,138 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:14,138 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:14,138 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738072166] [2022-03-15 15:28:14,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:14,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:14,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:14,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:14,139 INFO L87 Difference]: Start difference. First operand 345 states and 776 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:17,497 INFO L93 Difference]: Finished difference Result 680 states and 1374 transitions. [2022-03-15 15:28:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 15:28:17,497 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:17,498 INFO L225 Difference]: With dead ends: 680 [2022-03-15 15:28:17,498 INFO L226 Difference]: Without dead ends: 677 [2022-03-15 15:28:17,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4239 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1666, Invalid=13096, Unknown=0, NotChecked=0, Total=14762 [2022-03-15 15:28:17,499 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 283 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:17,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 857 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:28:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-03-15 15:28:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 349. [2022-03-15 15:28:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.2557471264367814) internal successors, (785), 348 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 785 transitions. [2022-03-15 15:28:17,504 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 785 transitions. Word has length 21 [2022-03-15 15:28:17,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:17,504 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 785 transitions. [2022-03-15 15:28:17,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 785 transitions. [2022-03-15 15:28:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:17,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:17,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:17,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-15 15:28:17,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:17,706 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:17,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:17,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1704521658, now seen corresponding path program 66 times [2022-03-15 15:28:17,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:17,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397591032] [2022-03-15 15:28:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:17,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:17,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:17,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397591032] [2022-03-15 15:28:17,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397591032] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:17,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173174790] [2022-03-15 15:28:17,883 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:28:17,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:17,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:17,884 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:17,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-15 15:28:17,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:28:17,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:17,901 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:17,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:18,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:18,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173174790] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:18,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:18,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:18,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963169072] [2022-03-15 15:28:18,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:18,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:18,837 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2051, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:18,837 INFO L87 Difference]: Start difference. First operand 349 states and 785 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:21,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:21,929 INFO L93 Difference]: Finished difference Result 686 states and 1384 transitions. [2022-03-15 15:28:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 15:28:21,929 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:21,930 INFO L225 Difference]: With dead ends: 686 [2022-03-15 15:28:21,930 INFO L226 Difference]: Without dead ends: 683 [2022-03-15 15:28:21,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3807 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1590, Invalid=11982, Unknown=0, NotChecked=0, Total=13572 [2022-03-15 15:28:21,931 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 324 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:21,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 832 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:28:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-15 15:28:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 351. [2022-03-15 15:28:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.2542857142857144) internal successors, (789), 350 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 789 transitions. [2022-03-15 15:28:21,935 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 789 transitions. Word has length 21 [2022-03-15 15:28:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:21,935 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 789 transitions. [2022-03-15 15:28:21,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 789 transitions. [2022-03-15 15:28:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:21,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:21,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:21,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-15 15:28:22,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-15 15:28:22,136 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:22,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash -151160906, now seen corresponding path program 67 times [2022-03-15 15:28:22,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:22,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629302395] [2022-03-15 15:28:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:22,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:22,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629302395] [2022-03-15 15:28:22,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629302395] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:22,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103739637] [2022-03-15 15:28:22,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:28:22,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:22,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:22,312 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:22,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-15 15:28:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:22,329 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:22,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:22,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:23,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103739637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:23,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:23,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:23,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786082351] [2022-03-15 15:28:23,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:23,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:23,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:23,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:23,254 INFO L87 Difference]: Start difference. First operand 351 states and 789 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:27,282 INFO L93 Difference]: Finished difference Result 713 states and 1452 transitions. [2022-03-15 15:28:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-15 15:28:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:27,283 INFO L225 Difference]: With dead ends: 713 [2022-03-15 15:28:27,283 INFO L226 Difference]: Without dead ends: 710 [2022-03-15 15:28:27,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5323 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2087, Invalid=15735, Unknown=0, NotChecked=0, Total=17822 [2022-03-15 15:28:27,284 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 327 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:27,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 908 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:28:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-03-15 15:28:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 347. [2022-03-15 15:28:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 2.2572254335260116) internal successors, (781), 346 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 781 transitions. [2022-03-15 15:28:27,289 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 781 transitions. Word has length 21 [2022-03-15 15:28:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:27,289 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 781 transitions. [2022-03-15 15:28:27,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 781 transitions. [2022-03-15 15:28:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:27,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:27,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:27,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-15 15:28:27,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-15 15:28:27,490 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1464075510, now seen corresponding path program 68 times [2022-03-15 15:28:27,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:27,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099054469] [2022-03-15 15:28:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:27,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:27,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099054469] [2022-03-15 15:28:27,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099054469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:27,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924005409] [2022-03-15 15:28:27,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:28:27,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:27,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:27,667 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:27,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-15 15:28:27,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:28:27,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:27,686 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:27,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:28,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:28,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924005409] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:28,628 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:28,628 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:28,628 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000720515] [2022-03-15 15:28:28,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:28,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:28,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:28,629 INFO L87 Difference]: Start difference. First operand 347 states and 781 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:31,609 INFO L93 Difference]: Finished difference Result 714 states and 1446 transitions. [2022-03-15 15:28:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 15:28:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:31,610 INFO L225 Difference]: With dead ends: 714 [2022-03-15 15:28:31,610 INFO L226 Difference]: Without dead ends: 711 [2022-03-15 15:28:31,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3950 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1748, Invalid=12058, Unknown=0, NotChecked=0, Total=13806 [2022-03-15 15:28:31,612 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 268 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:31,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 664 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:28:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-03-15 15:28:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 351. [2022-03-15 15:28:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.257142857142857) internal successors, (790), 350 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 790 transitions. [2022-03-15 15:28:31,617 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 790 transitions. Word has length 21 [2022-03-15 15:28:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:31,617 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 790 transitions. [2022-03-15 15:28:31,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 790 transitions. [2022-03-15 15:28:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:31,617 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:31,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:31,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-03-15 15:28:31,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-03-15 15:28:31,818 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:31,818 INFO L85 PathProgramCache]: Analyzing trace with hash -391607054, now seen corresponding path program 69 times [2022-03-15 15:28:31,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:31,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2490356] [2022-03-15 15:28:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:31,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:31,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:31,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2490356] [2022-03-15 15:28:31,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2490356] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:31,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799178282] [2022-03-15 15:28:31,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:28:31,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:31,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:31,997 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:31,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-15 15:28:32,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:28:32,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:32,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:32,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:32,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:32,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799178282] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:32,944 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:32,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:32,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786239092] [2022-03-15 15:28:32,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:32,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:32,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:32,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:32,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:32,945 INFO L87 Difference]: Start difference. First operand 351 states and 790 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:36,647 INFO L93 Difference]: Finished difference Result 738 states and 1505 transitions. [2022-03-15 15:28:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 15:28:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:36,649 INFO L225 Difference]: With dead ends: 738 [2022-03-15 15:28:36,649 INFO L226 Difference]: Without dead ends: 735 [2022-03-15 15:28:36,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5227 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2115, Invalid=15177, Unknown=0, NotChecked=0, Total=17292 [2022-03-15 15:28:36,650 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 386 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:36,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 708 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:28:36,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-15 15:28:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 349. [2022-03-15 15:28:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.2586206896551726) internal successors, (786), 348 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 786 transitions. [2022-03-15 15:28:36,655 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 786 transitions. Word has length 21 [2022-03-15 15:28:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:36,655 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 786 transitions. [2022-03-15 15:28:36,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 786 transitions. [2022-03-15 15:28:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:36,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:36,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:36,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-03-15 15:28:36,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:36,856 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:36,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash 352111858, now seen corresponding path program 70 times [2022-03-15 15:28:36,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:36,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52239410] [2022-03-15 15:28:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:36,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:37,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:37,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52239410] [2022-03-15 15:28:37,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52239410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:37,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786470828] [2022-03-15 15:28:37,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:28:37,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:37,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:37,034 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:37,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-15 15:28:37,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:28:37,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:37,055 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:37,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:37,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:37,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786470828] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:37,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:37,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:37,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776211268] [2022-03-15 15:28:37,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:37,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:37,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:37,991 INFO L87 Difference]: Start difference. First operand 349 states and 786 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:44,350 INFO L93 Difference]: Finished difference Result 825 states and 1684 transitions. [2022-03-15 15:28:44,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-15 15:28:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:44,351 INFO L225 Difference]: With dead ends: 825 [2022-03-15 15:28:44,351 INFO L226 Difference]: Without dead ends: 822 [2022-03-15 15:28:44,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12099 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4246, Invalid=29794, Unknown=0, NotChecked=0, Total=34040 [2022-03-15 15:28:44,353 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 373 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:44,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 841 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 15:28:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-15 15:28:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 346. [2022-03-15 15:28:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.252173913043478) internal successors, (777), 345 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 777 transitions. [2022-03-15 15:28:44,357 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 777 transitions. Word has length 21 [2022-03-15 15:28:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:44,358 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 777 transitions. [2022-03-15 15:28:44,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 777 transitions. [2022-03-15 15:28:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:44,358 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:44,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:44,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-03-15 15:28:44,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:44,559 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:44,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:44,559 INFO L85 PathProgramCache]: Analyzing trace with hash -214413160, now seen corresponding path program 71 times [2022-03-15 15:28:44,559 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:44,559 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912959865] [2022-03-15 15:28:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:44,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:44,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:44,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912959865] [2022-03-15 15:28:44,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912959865] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:44,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746792154] [2022-03-15 15:28:44,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:28:44,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:44,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:44,738 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:44,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-15 15:28:44,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:28:44,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:44,757 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:44,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:45,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:45,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746792154] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:45,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:45,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:45,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520518031] [2022-03-15 15:28:45,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:45,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:45,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:45,699 INFO L87 Difference]: Start difference. First operand 346 states and 777 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:48,767 INFO L93 Difference]: Finished difference Result 690 states and 1405 transitions. [2022-03-15 15:28:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 15:28:48,767 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:48,768 INFO L225 Difference]: With dead ends: 690 [2022-03-15 15:28:48,768 INFO L226 Difference]: Without dead ends: 687 [2022-03-15 15:28:48,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3887 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1721, Invalid=12085, Unknown=0, NotChecked=0, Total=13806 [2022-03-15 15:28:48,769 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 261 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:48,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 810 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:28:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-15 15:28:48,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 347. [2022-03-15 15:28:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 2.2514450867052025) internal successors, (779), 346 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 779 transitions. [2022-03-15 15:28:48,773 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 779 transitions. Word has length 21 [2022-03-15 15:28:48,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:48,773 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 779 transitions. [2022-03-15 15:28:48,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 779 transitions. [2022-03-15 15:28:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:48,774 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:48,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:48,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-03-15 15:28:48,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-03-15 15:28:48,975 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1132363350, now seen corresponding path program 72 times [2022-03-15 15:28:48,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:48,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139754551] [2022-03-15 15:28:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:48,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:49,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:49,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139754551] [2022-03-15 15:28:49,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139754551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:49,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6] [2022-03-15 15:28:49,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:28:49,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:49,155 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:49,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-15 15:28:49,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:28:49,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:49,178 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:49,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:49,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:50,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:50,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:50,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:50,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841457399] [2022-03-15 15:28:50,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:50,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:50,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:50,124 INFO L87 Difference]: Start difference. First operand 347 states and 779 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:53,583 INFO L93 Difference]: Finished difference Result 711 states and 1455 transitions. [2022-03-15 15:28:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 15:28:53,583 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:53,584 INFO L225 Difference]: With dead ends: 711 [2022-03-15 15:28:53,584 INFO L226 Difference]: Without dead ends: 708 [2022-03-15 15:28:53,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5122 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2189, Invalid=15103, Unknown=0, NotChecked=0, Total=17292 [2022-03-15 15:28:53,585 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 372 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:53,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 750 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:28:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-03-15 15:28:53,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 343. [2022-03-15 15:28:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 2.254385964912281) internal successors, (771), 342 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 771 transitions. [2022-03-15 15:28:53,589 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 771 transitions. Word has length 21 [2022-03-15 15:28:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:53,589 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 771 transitions. [2022-03-15 15:28:53,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 771 transitions. [2022-03-15 15:28:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:53,590 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:53,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:53,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-03-15 15:28:53,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:53,790 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:53,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1320495092, now seen corresponding path program 73 times [2022-03-15 15:28:53,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:53,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386380637] [2022-03-15 15:28:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:53,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:53,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:53,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386380637] [2022-03-15 15:28:53,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386380637] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:53,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025261786] [2022-03-15 15:28:53,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:28:53,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:53,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:53,970 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:53,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-15 15:28:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:53,988 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:53,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:54,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:54,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025261786] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:54,944 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:54,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:54,944 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623207751] [2022-03-15 15:28:54,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:54,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:54,944 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:54,945 INFO L87 Difference]: Start difference. First operand 343 states and 771 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:28:57,566 INFO L93 Difference]: Finished difference Result 656 states and 1315 transitions. [2022-03-15 15:28:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 15:28:57,567 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:28:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:28:57,567 INFO L225 Difference]: With dead ends: 656 [2022-03-15 15:28:57,567 INFO L226 Difference]: Without dead ends: 653 [2022-03-15 15:28:57,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3049 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1369, Invalid=9973, Unknown=0, NotChecked=0, Total=11342 [2022-03-15 15:28:57,568 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 336 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:28:57,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 575 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:28:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-03-15 15:28:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 348. [2022-03-15 15:28:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 2.2536023054755043) internal successors, (782), 347 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 782 transitions. [2022-03-15 15:28:57,573 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 782 transitions. Word has length 21 [2022-03-15 15:28:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:28:57,573 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 782 transitions. [2022-03-15 15:28:57,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:28:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 782 transitions. [2022-03-15 15:28:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:28:57,574 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:28:57,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:28:57,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-03-15 15:28:57,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:57,774 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:28:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:28:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash -428320386, now seen corresponding path program 74 times [2022-03-15 15:28:57,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:28:57,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120264570] [2022-03-15 15:28:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:28:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:28:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:28:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:57,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:28:57,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120264570] [2022-03-15 15:28:57,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120264570] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:28:57,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915826850] [2022-03-15 15:28:57,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:28:57,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:28:57,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:28:57,960 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:28:57,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-15 15:28:57,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:28:57,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:28:57,978 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:28:57,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:28:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:58,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:28:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:28:58,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915826850] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:28:58,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:28:58,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:28:58,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64124919] [2022-03-15 15:28:58,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:28:58,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:28:58,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:28:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:28:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:28:58,937 INFO L87 Difference]: Start difference. First operand 348 states and 782 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:01,268 INFO L93 Difference]: Finished difference Result 662 states and 1325 transitions. [2022-03-15 15:29:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 15:29:01,275 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:01,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:01,276 INFO L225 Difference]: With dead ends: 662 [2022-03-15 15:29:01,276 INFO L226 Difference]: Without dead ends: 659 [2022-03-15 15:29:01,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2684 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1275, Invalid=9027, Unknown=0, NotChecked=0, Total=10302 [2022-03-15 15:29:01,277 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 335 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:01,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 667 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:29:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-03-15 15:29:01,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 350. [2022-03-15 15:29:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.2521489971346704) internal successors, (786), 349 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 786 transitions. [2022-03-15 15:29:01,282 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 786 transitions. Word has length 21 [2022-03-15 15:29:01,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:01,282 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 786 transitions. [2022-03-15 15:29:01,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 786 transitions. [2022-03-15 15:29:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:01,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:01,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:01,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-03-15 15:29:01,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:01,499 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2010964346, now seen corresponding path program 75 times [2022-03-15 15:29:01,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:01,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442918123] [2022-03-15 15:29:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:01,674 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:01,674 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442918123] [2022-03-15 15:29:01,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442918123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:01,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503248138] [2022-03-15 15:29:01,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:29:01,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:01,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:01,676 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:01,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-15 15:29:01,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:29:01,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:01,693 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:01,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:02,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:02,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503248138] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:02,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:02,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:02,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005411513] [2022-03-15 15:29:02,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:02,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:02,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:02,633 INFO L87 Difference]: Start difference. First operand 350 states and 786 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:05,830 INFO L93 Difference]: Finished difference Result 690 states and 1394 transitions. [2022-03-15 15:29:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 15:29:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:05,831 INFO L225 Difference]: With dead ends: 690 [2022-03-15 15:29:05,831 INFO L226 Difference]: Without dead ends: 687 [2022-03-15 15:29:05,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3868 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1699, Invalid=12107, Unknown=0, NotChecked=0, Total=13806 [2022-03-15 15:29:05,832 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 339 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:05,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 811 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:29:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-15 15:29:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 346. [2022-03-15 15:29:05,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.255072463768116) internal successors, (778), 345 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 778 transitions. [2022-03-15 15:29:05,836 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 778 transitions. Word has length 21 [2022-03-15 15:29:05,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:05,836 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 778 transitions. [2022-03-15 15:29:05,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:05,836 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 778 transitions. [2022-03-15 15:29:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:05,837 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:05,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:05,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-03-15 15:29:06,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-15 15:29:06,037 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:06,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:06,038 INFO L85 PathProgramCache]: Analyzing trace with hash -668766534, now seen corresponding path program 76 times [2022-03-15 15:29:06,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:06,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474332082] [2022-03-15 15:29:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:06,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:06,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474332082] [2022-03-15 15:29:06,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474332082] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:06,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643759050] [2022-03-15 15:29:06,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:29:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:06,216 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:06,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-15 15:29:06,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:29:06,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:06,233 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:06,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:06,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:07,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643759050] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:07,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:07,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:07,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379271780] [2022-03-15 15:29:07,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:07,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:07,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:07,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:07,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:07,196 INFO L87 Difference]: Start difference. First operand 346 states and 778 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:10,049 INFO L93 Difference]: Finished difference Result 677 states and 1357 transitions. [2022-03-15 15:29:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 15:29:10,049 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:10,050 INFO L225 Difference]: With dead ends: 677 [2022-03-15 15:29:10,050 INFO L226 Difference]: Without dead ends: 674 [2022-03-15 15:29:10,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3245 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1498, Invalid=10492, Unknown=0, NotChecked=0, Total=11990 [2022-03-15 15:29:10,051 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 321 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:10,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 663 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:29:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-03-15 15:29:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 350. [2022-03-15 15:29:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.2550143266475646) internal successors, (787), 349 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 787 transitions. [2022-03-15 15:29:10,056 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 787 transitions. Word has length 21 [2022-03-15 15:29:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:10,056 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 787 transitions. [2022-03-15 15:29:10,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 787 transitions. [2022-03-15 15:29:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:10,056 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:10,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:10,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-03-15 15:29:10,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-15 15:29:10,257 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1770518198, now seen corresponding path program 77 times [2022-03-15 15:29:10,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:10,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178911551] [2022-03-15 15:29:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:10,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:10,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:10,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178911551] [2022-03-15 15:29:10,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178911551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:10,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428185630] [2022-03-15 15:29:10,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:29:10,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:10,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:10,436 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:10,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-15 15:29:10,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:29:10,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:10,453 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:10,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:10,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:11,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428185630] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:11,382 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:11,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:11,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043998898] [2022-03-15 15:29:11,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:11,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:11,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:11,383 INFO L87 Difference]: Start difference. First operand 350 states and 787 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:14,578 INFO L93 Difference]: Finished difference Result 706 states and 1419 transitions. [2022-03-15 15:29:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 15:29:14,579 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:14,580 INFO L225 Difference]: With dead ends: 706 [2022-03-15 15:29:14,580 INFO L226 Difference]: Without dead ends: 703 [2022-03-15 15:29:14,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4131 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1779, Invalid=12741, Unknown=0, NotChecked=0, Total=14520 [2022-03-15 15:29:14,581 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 470 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:14,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 580 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:29:14,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-03-15 15:29:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 353. [2022-03-15 15:29:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.2556818181818183) internal successors, (794), 352 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 794 transitions. [2022-03-15 15:29:14,585 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 794 transitions. Word has length 21 [2022-03-15 15:29:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:14,585 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 794 transitions. [2022-03-15 15:29:14,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 794 transitions. [2022-03-15 15:29:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:14,586 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:14,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:14,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-15 15:29:14,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-03-15 15:29:14,786 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1780730186, now seen corresponding path program 78 times [2022-03-15 15:29:14,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:14,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280259323] [2022-03-15 15:29:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:14,963 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:14,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280259323] [2022-03-15 15:29:14,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280259323] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:14,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391326958] [2022-03-15 15:29:14,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:29:14,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:14,964 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:14,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-15 15:29:14,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:29:14,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:14,982 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:14,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:15,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:15,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391326958] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:15,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:15,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:15,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829589708] [2022-03-15 15:29:15,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:15,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:15,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:15,942 INFO L87 Difference]: Start difference. First operand 353 states and 794 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:20,713 INFO L93 Difference]: Finished difference Result 754 states and 1519 transitions. [2022-03-15 15:29:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-15 15:29:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:20,715 INFO L225 Difference]: With dead ends: 754 [2022-03-15 15:29:20,715 INFO L226 Difference]: Without dead ends: 751 [2022-03-15 15:29:20,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6672 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2723, Invalid=18739, Unknown=0, NotChecked=0, Total=21462 [2022-03-15 15:29:20,716 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 320 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:20,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 766 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:29:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-03-15 15:29:20,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 351. [2022-03-15 15:29:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.2514285714285713) internal successors, (788), 350 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-03-15 15:29:20,720 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-03-15 15:29:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:20,721 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-03-15 15:29:20,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-03-15 15:29:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:20,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:20,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:20,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-03-15 15:29:20,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-03-15 15:29:20,922 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1904356064, now seen corresponding path program 79 times [2022-03-15 15:29:20,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:20,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503237955] [2022-03-15 15:29:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:20,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:21,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:21,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503237955] [2022-03-15 15:29:21,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503237955] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:21,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275758253] [2022-03-15 15:29:21,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:29:21,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:21,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:21,100 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:21,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-15 15:29:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:21,117 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:21,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:21,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:22,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275758253] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:22,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:22,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:22,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771917696] [2022-03-15 15:29:22,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:22,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:22,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:22,075 INFO L87 Difference]: Start difference. First operand 351 states and 788 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:25,121 INFO L93 Difference]: Finished difference Result 691 states and 1406 transitions. [2022-03-15 15:29:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 15:29:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:25,122 INFO L225 Difference]: With dead ends: 691 [2022-03-15 15:29:25,122 INFO L226 Difference]: Without dead ends: 688 [2022-03-15 15:29:25,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3798 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1809, Invalid=11763, Unknown=0, NotChecked=0, Total=13572 [2022-03-15 15:29:25,123 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 334 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:25,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 617 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:29:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-03-15 15:29:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 352. [2022-03-15 15:29:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.2507122507122506) internal successors, (790), 351 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 790 transitions. [2022-03-15 15:29:25,128 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 790 transitions. Word has length 21 [2022-03-15 15:29:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:25,128 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 790 transitions. [2022-03-15 15:29:25,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 790 transitions. [2022-03-15 15:29:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:25,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:25,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:25,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-15 15:29:25,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:25,329 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1472661042, now seen corresponding path program 80 times [2022-03-15 15:29:25,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:25,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813485541] [2022-03-15 15:29:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:25,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:25,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813485541] [2022-03-15 15:29:25,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813485541] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:25,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651548209] [2022-03-15 15:29:25,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:29:25,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:25,524 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:25,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-15 15:29:25,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:29:25,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:25,541 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:25,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:25,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:26,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651548209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:26,473 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:26,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:26,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089379043] [2022-03-15 15:29:26,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:26,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:26,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:26,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:26,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:26,473 INFO L87 Difference]: Start difference. First operand 352 states and 790 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:29,930 INFO L93 Difference]: Finished difference Result 706 states and 1445 transitions. [2022-03-15 15:29:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-15 15:29:29,930 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:29,931 INFO L225 Difference]: With dead ends: 706 [2022-03-15 15:29:29,931 INFO L226 Difference]: Without dead ends: 703 [2022-03-15 15:29:29,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5031 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2285, Invalid=14745, Unknown=0, NotChecked=0, Total=17030 [2022-03-15 15:29:29,932 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 310 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:29,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 627 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:29:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-03-15 15:29:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 349. [2022-03-15 15:29:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.2528735632183907) internal successors, (784), 348 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-03-15 15:29:29,937 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-03-15 15:29:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:29,937 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-03-15 15:29:29,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:29,937 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-03-15 15:29:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:29,937 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:29,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:29,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-03-15 15:29:30,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:30,138 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:30,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -134877002, now seen corresponding path program 81 times [2022-03-15 15:29:30,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:30,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959856166] [2022-03-15 15:29:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:30,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:30,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:30,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959856166] [2022-03-15 15:29:30,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959856166] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:30,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957548334] [2022-03-15 15:29:30,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:29:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:30,318 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:30,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-15 15:29:30,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:29:30,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:30,335 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:30,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:30,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:31,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957548334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:31,268 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:31,268 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:31,268 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943358539] [2022-03-15 15:29:31,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:31,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:31,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:31,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:31,269 INFO L87 Difference]: Start difference. First operand 349 states and 784 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:33,289 INFO L93 Difference]: Finished difference Result 651 states and 1316 transitions. [2022-03-15 15:29:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 15:29:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:33,290 INFO L225 Difference]: With dead ends: 651 [2022-03-15 15:29:33,290 INFO L226 Difference]: Without dead ends: 648 [2022-03-15 15:29:33,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2445 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1214, Invalid=8292, Unknown=0, NotChecked=0, Total=9506 [2022-03-15 15:29:33,291 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 250 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:33,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 598 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:29:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-03-15 15:29:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 345. [2022-03-15 15:29:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.252906976744186) internal successors, (775), 344 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 775 transitions. [2022-03-15 15:29:33,296 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 775 transitions. Word has length 21 [2022-03-15 15:29:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:33,296 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 775 transitions. [2022-03-15 15:29:33,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 775 transitions. [2022-03-15 15:29:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:33,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:33,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:33,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-03-15 15:29:33,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-03-15 15:29:33,499 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1863683918, now seen corresponding path program 82 times [2022-03-15 15:29:33,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:33,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057599889] [2022-03-15 15:29:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:33,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:33,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057599889] [2022-03-15 15:29:33,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057599889] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:33,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170125377] [2022-03-15 15:29:33,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:29:33,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:33,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:33,681 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:33,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-15 15:29:33,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:29:33,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:33,698 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:33,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:34,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:34,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170125377] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:34,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:34,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:34,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374673941] [2022-03-15 15:29:34,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:34,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:34,637 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2014, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:34,638 INFO L87 Difference]: Start difference. First operand 345 states and 775 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:38,397 INFO L93 Difference]: Finished difference Result 747 states and 1517 transitions. [2022-03-15 15:29:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-15 15:29:38,397 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:38,398 INFO L225 Difference]: With dead ends: 747 [2022-03-15 15:29:38,398 INFO L226 Difference]: Without dead ends: 741 [2022-03-15 15:29:38,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5429 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2452, Invalid=15638, Unknown=0, NotChecked=0, Total=18090 [2022-03-15 15:29:38,399 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 403 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:38,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 548 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:29:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-03-15 15:29:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 349. [2022-03-15 15:29:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.2528735632183907) internal successors, (784), 348 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-03-15 15:29:38,403 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-03-15 15:29:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:38,404 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-03-15 15:29:38,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-03-15 15:29:38,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:38,404 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:38,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:38,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-15 15:29:38,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:38,607 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:38,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash 817716644, now seen corresponding path program 83 times [2022-03-15 15:29:38,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:38,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308372431] [2022-03-15 15:29:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:38,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:38,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:38,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308372431] [2022-03-15 15:29:38,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308372431] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:38,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905414223] [2022-03-15 15:29:38,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:29:38,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:38,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:38,791 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:38,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-15 15:29:38,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:29:38,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:38,807 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:38,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:39,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:39,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905414223] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:39,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:39,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:39,741 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102688866] [2022-03-15 15:29:39,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:39,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:39,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:39,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:39,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2007, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:39,742 INFO L87 Difference]: Start difference. First operand 349 states and 784 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:43,029 INFO L93 Difference]: Finished difference Result 707 states and 1430 transitions. [2022-03-15 15:29:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 15:29:43,029 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:43,030 INFO L225 Difference]: With dead ends: 707 [2022-03-15 15:29:43,030 INFO L226 Difference]: Without dead ends: 701 [2022-03-15 15:29:43,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4384 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2129, Invalid=13123, Unknown=0, NotChecked=0, Total=15252 [2022-03-15 15:29:43,031 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 345 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:43,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 714 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:29:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-15 15:29:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 351. [2022-03-15 15:29:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.2514285714285713) internal successors, (788), 350 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-03-15 15:29:43,036 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-03-15 15:29:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:43,036 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-03-15 15:29:43,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-03-15 15:29:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:43,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:43,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:43,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-03-15 15:29:43,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:43,237 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:43,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:43,238 INFO L85 PathProgramCache]: Analyzing trace with hash -100233546, now seen corresponding path program 84 times [2022-03-15 15:29:43,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:43,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732072607] [2022-03-15 15:29:43,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:43,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:43,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:43,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732072607] [2022-03-15 15:29:43,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732072607] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:43,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750492322] [2022-03-15 15:29:43,418 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:29:43,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:43,419 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:43,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-15 15:29:43,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:29:43,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:43,437 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:43,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:43,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:44,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750492322] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:44,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:44,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:44,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062339303] [2022-03-15 15:29:44,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:44,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:44,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:44,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:44,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:44,368 INFO L87 Difference]: Start difference. First operand 351 states and 788 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:48,509 INFO L93 Difference]: Finished difference Result 734 states and 1491 transitions. [2022-03-15 15:29:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-15 15:29:48,509 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:48,510 INFO L225 Difference]: With dead ends: 734 [2022-03-15 15:29:48,510 INFO L226 Difference]: Without dead ends: 728 [2022-03-15 15:29:48,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6254 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2781, Invalid=17525, Unknown=0, NotChecked=0, Total=20306 [2022-03-15 15:29:48,511 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 366 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:48,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 685 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:29:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-03-15 15:29:48,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 342. [2022-03-15 15:29:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.2551319648093844) internal successors, (769), 341 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 769 transitions. [2022-03-15 15:29:48,516 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 769 transitions. Word has length 21 [2022-03-15 15:29:48,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:48,516 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 769 transitions. [2022-03-15 15:29:48,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 769 transitions. [2022-03-15 15:29:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:48,516 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:48,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:48,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-15 15:29:48,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:48,717 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:48,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1701538496, now seen corresponding path program 85 times [2022-03-15 15:29:48,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:48,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004235036] [2022-03-15 15:29:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:48,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:48,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004235036] [2022-03-15 15:29:48,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004235036] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:48,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504042359] [2022-03-15 15:29:48,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:29:48,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:48,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:48,901 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:48,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-15 15:29:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:48,918 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:48,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:49,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:49,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504042359] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:49,892 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:49,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:49,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710276167] [2022-03-15 15:29:49,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:49,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:49,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:49,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:49,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:49,892 INFO L87 Difference]: Start difference. First operand 342 states and 769 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:52,928 INFO L93 Difference]: Finished difference Result 699 states and 1387 transitions. [2022-03-15 15:29:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-15 15:29:52,928 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:52,929 INFO L225 Difference]: With dead ends: 699 [2022-03-15 15:29:52,929 INFO L226 Difference]: Without dead ends: 696 [2022-03-15 15:29:52,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3520 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1520, Invalid=11136, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 15:29:52,930 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 335 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:52,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 609 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:29:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-03-15 15:29:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 348. [2022-03-15 15:29:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 2.2536023054755043) internal successors, (782), 347 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 782 transitions. [2022-03-15 15:29:52,935 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 782 transitions. Word has length 21 [2022-03-15 15:29:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:52,935 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 782 transitions. [2022-03-15 15:29:52,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 782 transitions. [2022-03-15 15:29:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:52,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:52,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:52,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-03-15 15:29:53,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:53,136 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1701254094, now seen corresponding path program 86 times [2022-03-15 15:29:53,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:53,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501101496] [2022-03-15 15:29:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:53,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:53,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501101496] [2022-03-15 15:29:53,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501101496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:53,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798969746] [2022-03-15 15:29:53,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:29:53,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:53,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:53,316 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:53,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-15 15:29:53,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:29:53,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:53,336 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:53,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:53,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:54,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798969746] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:54,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:54,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:54,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888149854] [2022-03-15 15:29:54,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:54,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:54,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:54,278 INFO L87 Difference]: Start difference. First operand 348 states and 782 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:29:57,046 INFO L93 Difference]: Finished difference Result 705 states and 1397 transitions. [2022-03-15 15:29:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-15 15:29:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:29:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:29:57,047 INFO L225 Difference]: With dead ends: 705 [2022-03-15 15:29:57,047 INFO L226 Difference]: Without dead ends: 702 [2022-03-15 15:29:57,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1425, Invalid=10131, Unknown=0, NotChecked=0, Total=11556 [2022-03-15 15:29:57,048 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 367 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:29:57,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 721 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:29:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-03-15 15:29:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 346. [2022-03-15 15:29:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.255072463768116) internal successors, (778), 345 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 778 transitions. [2022-03-15 15:29:57,053 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 778 transitions. Word has length 21 [2022-03-15 15:29:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:29:57,053 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 778 transitions. [2022-03-15 15:29:57,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:29:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 778 transitions. [2022-03-15 15:29:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:29:57,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:29:57,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:29:57,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-03-15 15:29:57,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-15 15:29:57,254 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:29:57,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:29:57,254 INFO L85 PathProgramCache]: Analyzing trace with hash 738030638, now seen corresponding path program 87 times [2022-03-15 15:29:57,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:29:57,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204034151] [2022-03-15 15:29:57,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:29:57,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:29:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:29:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:57,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:29:57,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204034151] [2022-03-15 15:29:57,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204034151] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:29:57,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847943301] [2022-03-15 15:29:57,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:29:57,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:29:57,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:29:57,430 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:29:57,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-15 15:29:57,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:29:57,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:29:57,448 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:29:57,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:29:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:57,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:29:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:29:58,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847943301] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:29:58,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:29:58,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:29:58,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356342174] [2022-03-15 15:29:58,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:29:58,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:29:58,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:29:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:29:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:29:58,401 INFO L87 Difference]: Start difference. First operand 346 states and 778 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:02,171 INFO L93 Difference]: Finished difference Result 738 states and 1475 transitions. [2022-03-15 15:30:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 15:30:02,171 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:02,172 INFO L225 Difference]: With dead ends: 738 [2022-03-15 15:30:02,172 INFO L226 Difference]: Without dead ends: 735 [2022-03-15 15:30:02,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4921 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2015, Invalid=14755, Unknown=0, NotChecked=0, Total=16770 [2022-03-15 15:30:02,173 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 377 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:02,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 666 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:30:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-15 15:30:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 352. [2022-03-15 15:30:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.2507122507122506) internal successors, (790), 351 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 790 transitions. [2022-03-15 15:30:02,178 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 790 transitions. Word has length 21 [2022-03-15 15:30:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:02,178 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 790 transitions. [2022-03-15 15:30:02,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 790 transitions. [2022-03-15 15:30:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:02,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:02,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:02,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-15 15:30:02,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-15 15:30:02,379 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash 730707818, now seen corresponding path program 88 times [2022-03-15 15:30:02,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:02,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986239687] [2022-03-15 15:30:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:02,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:02,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986239687] [2022-03-15 15:30:02,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986239687] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:02,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099879853] [2022-03-15 15:30:02,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:30:02,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:02,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:02,554 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:02,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-15 15:30:02,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:30:02,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:02,571 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:02,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:02,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:03,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099879853] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:03,500 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:03,500 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:30:03,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506391882] [2022-03-15 15:30:03,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:03,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:30:03,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:30:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:30:03,501 INFO L87 Difference]: Start difference. First operand 352 states and 790 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:06,627 INFO L93 Difference]: Finished difference Result 766 states and 1531 transitions. [2022-03-15 15:30:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 15:30:06,628 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:06,629 INFO L225 Difference]: With dead ends: 766 [2022-03-15 15:30:06,629 INFO L226 Difference]: Without dead ends: 759 [2022-03-15 15:30:06,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4131 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1869, Invalid=12411, Unknown=0, NotChecked=0, Total=14280 [2022-03-15 15:30:06,629 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 431 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:06,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 662 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:30:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-03-15 15:30:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 350. [2022-03-15 15:30:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.2550143266475646) internal successors, (787), 349 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:06,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 787 transitions. [2022-03-15 15:30:06,635 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 787 transitions. Word has length 21 [2022-03-15 15:30:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:06,635 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 787 transitions. [2022-03-15 15:30:06,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 787 transitions. [2022-03-15 15:30:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:06,635 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:06,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:06,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-03-15 15:30:06,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:06,836 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1941700242, now seen corresponding path program 89 times [2022-03-15 15:30:06,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:06,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196731543] [2022-03-15 15:30:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:07,017 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:07,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196731543] [2022-03-15 15:30:07,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196731543] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:07,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983215088] [2022-03-15 15:30:07,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:30:07,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:07,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:07,019 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:07,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-15 15:30:07,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:30:07,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:07,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:07,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:07,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983215088] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:07,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:07,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:30:07,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942977606] [2022-03-15 15:30:07,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:07,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:30:07,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:07,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:30:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:30:07,991 INFO L87 Difference]: Start difference. First operand 350 states and 787 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:11,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:11,357 INFO L93 Difference]: Finished difference Result 721 states and 1431 transitions. [2022-03-15 15:30:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 15:30:11,357 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:11,358 INFO L225 Difference]: With dead ends: 721 [2022-03-15 15:30:11,358 INFO L226 Difference]: Without dead ends: 718 [2022-03-15 15:30:11,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1662, Invalid=11678, Unknown=0, NotChecked=0, Total=13340 [2022-03-15 15:30:11,359 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 317 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:11,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 822 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:30:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-03-15 15:30:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 352. [2022-03-15 15:30:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.2564102564102564) internal successors, (792), 351 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 792 transitions. [2022-03-15 15:30:11,365 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 792 transitions. Word has length 21 [2022-03-15 15:30:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:11,365 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 792 transitions. [2022-03-15 15:30:11,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 792 transitions. [2022-03-15 15:30:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:11,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:11,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:11,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-15 15:30:11,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-15 15:30:11,566 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 497584490, now seen corresponding path program 90 times [2022-03-15 15:30:11,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:11,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302176123] [2022-03-15 15:30:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:11,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:11,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302176123] [2022-03-15 15:30:11,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302176123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:11,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315112777] [2022-03-15 15:30:11,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:30:11,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:11,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:11,754 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:11,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-15 15:30:11,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:30:11,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:11,771 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:11,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:12,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:12,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315112777] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:12,731 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:12,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:30:12,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725445891] [2022-03-15 15:30:12,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:12,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:30:12,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:12,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:30:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:30:12,732 INFO L87 Difference]: Start difference. First operand 352 states and 792 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:16,825 INFO L93 Difference]: Finished difference Result 758 states and 1509 transitions. [2022-03-15 15:30:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 15:30:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:16,826 INFO L225 Difference]: With dead ends: 758 [2022-03-15 15:30:16,826 INFO L226 Difference]: Without dead ends: 755 [2022-03-15 15:30:16,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5130 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2064, Invalid=15228, Unknown=0, NotChecked=0, Total=17292 [2022-03-15 15:30:16,827 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 462 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:16,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 789 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:30:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-03-15 15:30:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 362. [2022-03-15 15:30:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.25207756232687) internal successors, (813), 361 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 813 transitions. [2022-03-15 15:30:16,832 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 813 transitions. Word has length 21 [2022-03-15 15:30:16,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:16,832 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 813 transitions. [2022-03-15 15:30:16,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 813 transitions. [2022-03-15 15:30:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:16,833 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:16,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:16,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-15 15:30:17,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-03-15 15:30:17,035 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:17,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:17,036 INFO L85 PathProgramCache]: Analyzing trace with hash 490261670, now seen corresponding path program 91 times [2022-03-15 15:30:17,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:17,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286407009] [2022-03-15 15:30:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:17,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:17,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286407009] [2022-03-15 15:30:17,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286407009] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:17,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622984535] [2022-03-15 15:30:17,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:30:17,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:17,216 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:17,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-15 15:30:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:17,233 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:17,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:17,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:18,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622984535] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:18,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:18,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:30:18,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637314115] [2022-03-15 15:30:18,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:18,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:30:18,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:30:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:30:18,126 INFO L87 Difference]: Start difference. First operand 362 states and 813 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:21,414 INFO L93 Difference]: Finished difference Result 785 states and 1568 transitions. [2022-03-15 15:30:21,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 15:30:21,414 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:21,415 INFO L225 Difference]: With dead ends: 785 [2022-03-15 15:30:21,416 INFO L226 Difference]: Without dead ends: 778 [2022-03-15 15:30:21,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1986, Invalid=13020, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 15:30:21,417 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 487 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:21,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 678 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:30:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-15 15:30:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 362. [2022-03-15 15:30:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.2548476454293627) internal successors, (814), 361 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 814 transitions. [2022-03-15 15:30:21,423 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 814 transitions. Word has length 21 [2022-03-15 15:30:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:21,423 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 814 transitions. [2022-03-15 15:30:21,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 814 transitions. [2022-03-15 15:30:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:21,423 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:21,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:21,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-03-15 15:30:21,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-03-15 15:30:21,631 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1241303402, now seen corresponding path program 92 times [2022-03-15 15:30:21,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:21,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235717829] [2022-03-15 15:30:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:21,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:21,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:21,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235717829] [2022-03-15 15:30:21,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235717829] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:21,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320914298] [2022-03-15 15:30:21,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:30:21,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:21,840 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:21,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-15 15:30:21,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:30:21,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:21,862 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:21,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:22,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:22,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320914298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:22,827 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:22,827 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:30:22,827 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715321127] [2022-03-15 15:30:22,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:22,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:30:22,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:22,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:30:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:30:22,828 INFO L87 Difference]: Start difference. First operand 362 states and 814 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:29,120 INFO L93 Difference]: Finished difference Result 822 states and 1645 transitions. [2022-03-15 15:30:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-15 15:30:29,121 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:29,122 INFO L225 Difference]: With dead ends: 822 [2022-03-15 15:30:29,122 INFO L226 Difference]: Without dead ends: 819 [2022-03-15 15:30:29,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9444 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3457, Invalid=25273, Unknown=0, NotChecked=0, Total=28730 [2022-03-15 15:30:29,123 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 494 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:29,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 691 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 15:30:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-15 15:30:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 368. [2022-03-15 15:30:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.2561307901907357) internal successors, (828), 367 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 828 transitions. [2022-03-15 15:30:29,129 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 828 transitions. Word has length 21 [2022-03-15 15:30:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:29,129 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 828 transitions. [2022-03-15 15:30:29,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 828 transitions. [2022-03-15 15:30:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:29,130 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:29,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:29,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-03-15 15:30:29,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-03-15 15:30:29,330 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:29,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:29,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1233980582, now seen corresponding path program 93 times [2022-03-15 15:30:29,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:29,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498394730] [2022-03-15 15:30:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:29,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:29,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:29,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498394730] [2022-03-15 15:30:29,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498394730] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:29,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413804752] [2022-03-15 15:30:29,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:30:29,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:29,511 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:29,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-15 15:30:29,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:30:29,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:29,529 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:29,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:29,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:30,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413804752] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:30,466 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:30,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:30:30,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844116303] [2022-03-15 15:30:30,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:30,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:30:30,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:30,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:30:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:30:30,467 INFO L87 Difference]: Start difference. First operand 368 states and 828 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:35,816 INFO L93 Difference]: Finished difference Result 859 states and 1714 transitions. [2022-03-15 15:30:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-15 15:30:35,817 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:35,818 INFO L225 Difference]: With dead ends: 859 [2022-03-15 15:30:35,818 INFO L226 Difference]: Without dead ends: 852 [2022-03-15 15:30:35,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8479 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3292, Invalid=22468, Unknown=0, NotChecked=0, Total=25760 [2022-03-15 15:30:35,819 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 554 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:35,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 792 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 15:30:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-03-15 15:30:35,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 372. [2022-03-15 15:30:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.269541778975741) internal successors, (842), 371 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 842 transitions. [2022-03-15 15:30:35,824 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 842 transitions. Word has length 21 [2022-03-15 15:30:35,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:35,824 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 842 transitions. [2022-03-15 15:30:35,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 842 transitions. [2022-03-15 15:30:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:35,825 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:35,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:35,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-03-15 15:30:36,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:36,027 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash -949697370, now seen corresponding path program 94 times [2022-03-15 15:30:36,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:36,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168704217] [2022-03-15 15:30:36,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:36,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:36,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:36,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168704217] [2022-03-15 15:30:36,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168704217] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:36,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334390404] [2022-03-15 15:30:36,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:30:36,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:36,206 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:36,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-15 15:30:36,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:30:36,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:36,224 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:36,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:36,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:37,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334390404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:37,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:37,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:30:37,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233153056] [2022-03-15 15:30:37,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:37,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:30:37,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:30:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1934, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:30:37,158 INFO L87 Difference]: Start difference. First operand 372 states and 842 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:41,661 INFO L93 Difference]: Finished difference Result 892 states and 1792 transitions. [2022-03-15 15:30:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-15 15:30:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:41,663 INFO L225 Difference]: With dead ends: 892 [2022-03-15 15:30:41,663 INFO L226 Difference]: Without dead ends: 885 [2022-03-15 15:30:41,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7071 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3072, Invalid=18980, Unknown=0, NotChecked=0, Total=22052 [2022-03-15 15:30:41,664 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 516 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:41,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 703 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:30:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-03-15 15:30:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 364. [2022-03-15 15:30:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 2.2479338842975207) internal successors, (816), 363 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 816 transitions. [2022-03-15 15:30:41,671 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 816 transitions. Word has length 21 [2022-03-15 15:30:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:41,671 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 816 transitions. [2022-03-15 15:30:41,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 816 transitions. [2022-03-15 15:30:41,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:41,671 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:41,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:41,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-03-15 15:30:41,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:41,872 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1117677524, now seen corresponding path program 95 times [2022-03-15 15:30:41,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:41,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550402496] [2022-03-15 15:30:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:42,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:42,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550402496] [2022-03-15 15:30:42,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550402496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:42,062 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661071063] [2022-03-15 15:30:42,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:30:42,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:42,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:42,063 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:42,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-15 15:30:42,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:30:42,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:42,081 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:42,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:42,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:43,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661071063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:43,051 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:43,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:30:43,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749684438] [2022-03-15 15:30:43,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:43,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:30:43,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:30:43,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:30:43,052 INFO L87 Difference]: Start difference. First operand 364 states and 816 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:47,314 INFO L93 Difference]: Finished difference Result 768 states and 1535 transitions. [2022-03-15 15:30:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-15 15:30:47,315 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:47,316 INFO L225 Difference]: With dead ends: 768 [2022-03-15 15:30:47,316 INFO L226 Difference]: Without dead ends: 765 [2022-03-15 15:30:47,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5264 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2399, Invalid=15423, Unknown=0, NotChecked=0, Total=17822 [2022-03-15 15:30:47,316 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 508 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:47,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 615 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:30:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-03-15 15:30:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 365. [2022-03-15 15:30:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 2.2472527472527473) internal successors, (818), 364 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 818 transitions. [2022-03-15 15:30:47,322 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 818 transitions. Word has length 21 [2022-03-15 15:30:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:47,322 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 818 transitions. [2022-03-15 15:30:47,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 818 transitions. [2022-03-15 15:30:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:47,322 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:47,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:47,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-15 15:30:47,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable131 [2022-03-15 15:30:47,523 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1110354704, now seen corresponding path program 96 times [2022-03-15 15:30:47,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:47,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252654433] [2022-03-15 15:30:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:47,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:47,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252654433] [2022-03-15 15:30:47,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252654433] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:47,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177431287] [2022-03-15 15:30:47,699 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:30:47,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:47,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:47,700 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:47,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-15 15:30:47,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:30:47,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:47,717 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:47,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:48,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:48,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177431287] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:48,633 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:48,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:30:48,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805352047] [2022-03-15 15:30:48,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:48,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:30:48,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:30:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:30:48,633 INFO L87 Difference]: Start difference. First operand 365 states and 818 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:51,903 INFO L93 Difference]: Finished difference Result 785 states and 1572 transitions. [2022-03-15 15:30:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 15:30:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:51,904 INFO L225 Difference]: With dead ends: 785 [2022-03-15 15:30:51,904 INFO L226 Difference]: Without dead ends: 778 [2022-03-15 15:30:51,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4339 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2114, Invalid=12892, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 15:30:51,904 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 491 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:51,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 688 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:30:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-15 15:30:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 370. [2022-03-15 15:30:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.2601626016260163) internal successors, (834), 369 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 834 transitions. [2022-03-15 15:30:51,909 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 834 transitions. Word has length 21 [2022-03-15 15:30:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:51,910 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 834 transitions. [2022-03-15 15:30:51,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 834 transitions. [2022-03-15 15:30:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:51,910 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:51,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:51,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-03-15 15:30:52,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:52,126 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:52,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1073323248, now seen corresponding path program 97 times [2022-03-15 15:30:52,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:52,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151814003] [2022-03-15 15:30:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:52,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:52,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:52,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151814003] [2022-03-15 15:30:52,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151814003] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:52,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655611100] [2022-03-15 15:30:52,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:30:52,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:52,307 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:52,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-15 15:30:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:52,325 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:52,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:52,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:53,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655611100] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:53,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:53,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:30:53,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014473002] [2022-03-15 15:30:53,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:53,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:30:53,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:30:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:30:53,268 INFO L87 Difference]: Start difference. First operand 370 states and 834 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:30:57,057 INFO L93 Difference]: Finished difference Result 816 states and 1646 transitions. [2022-03-15 15:30:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 15:30:57,058 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:30:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:30:57,058 INFO L225 Difference]: With dead ends: 816 [2022-03-15 15:30:57,058 INFO L226 Difference]: Without dead ends: 802 [2022-03-15 15:30:57,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5099 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2409, Invalid=14621, Unknown=0, NotChecked=0, Total=17030 [2022-03-15 15:30:57,059 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 442 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:30:57,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 723 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:30:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-03-15 15:30:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 366. [2022-03-15 15:30:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.2465753424657535) internal successors, (820), 365 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 820 transitions. [2022-03-15 15:30:57,064 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 820 transitions. Word has length 21 [2022-03-15 15:30:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:30:57,064 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 820 transitions. [2022-03-15 15:30:57,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:30:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 820 transitions. [2022-03-15 15:30:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:30:57,065 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:30:57,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:30:57,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-03-15 15:30:57,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:57,266 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:30:57,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:30:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash 199727334, now seen corresponding path program 98 times [2022-03-15 15:30:57,266 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:30:57,266 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811903449] [2022-03-15 15:30:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:30:57,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:30:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:30:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:57,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:30:57,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811903449] [2022-03-15 15:30:57,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811903449] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:30:57,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789945019] [2022-03-15 15:30:57,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:30:57,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:30:57,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:30:57,450 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:30:57,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-15 15:30:57,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:30:57,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:30:57,468 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:30:57,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:30:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:57,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:30:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:30:58,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789945019] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:30:58,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:30:58,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:30:58,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93932153] [2022-03-15 15:30:58,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:30:58,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:30:58,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:30:58,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:30:58,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:30:58,434 INFO L87 Difference]: Start difference. First operand 366 states and 820 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:03,089 INFO L93 Difference]: Finished difference Result 768 states and 1558 transitions. [2022-03-15 15:31:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-15 15:31:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:03,091 INFO L225 Difference]: With dead ends: 768 [2022-03-15 15:31:03,091 INFO L226 Difference]: Without dead ends: 765 [2022-03-15 15:31:03,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6865 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2843, Invalid=19209, Unknown=0, NotChecked=0, Total=22052 [2022-03-15 15:31:03,092 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 412 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:03,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 680 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:31:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-03-15 15:31:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 369. [2022-03-15 15:31:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.2472826086956523) internal successors, (827), 368 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 827 transitions. [2022-03-15 15:31:03,097 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 827 transitions. Word has length 21 [2022-03-15 15:31:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:03,097 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 827 transitions. [2022-03-15 15:31:03,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 827 transitions. [2022-03-15 15:31:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:03,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:03,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:03,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:03,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-15 15:31:03,298 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash 192404514, now seen corresponding path program 99 times [2022-03-15 15:31:03,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:03,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451903981] [2022-03-15 15:31:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:03,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:03,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451903981] [2022-03-15 15:31:03,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451903981] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:03,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835909879] [2022-03-15 15:31:03,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:31:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:03,482 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:03,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-15 15:31:03,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:31:03,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:03,500 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:03,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:03,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:04,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835909879] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:04,424 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:04,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:31:04,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128015680] [2022-03-15 15:31:04,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:04,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:31:04,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:31:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:31:04,425 INFO L87 Difference]: Start difference. First operand 369 states and 827 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:08,177 INFO L93 Difference]: Finished difference Result 792 states and 1603 transitions. [2022-03-15 15:31:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-15 15:31:08,177 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:08,178 INFO L225 Difference]: With dead ends: 792 [2022-03-15 15:31:08,178 INFO L226 Difference]: Without dead ends: 785 [2022-03-15 15:31:08,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5847 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2625, Invalid=16281, Unknown=0, NotChecked=0, Total=18906 [2022-03-15 15:31:08,180 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 385 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:08,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 684 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:31:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-03-15 15:31:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 370. [2022-03-15 15:31:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.2601626016260163) internal successors, (834), 369 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 834 transitions. [2022-03-15 15:31:08,185 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 834 transitions. Word has length 21 [2022-03-15 15:31:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:08,185 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 834 transitions. [2022-03-15 15:31:08,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 834 transitions. [2022-03-15 15:31:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:08,186 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:08,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:08,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:08,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-03-15 15:31:08,386 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:08,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1991273438, now seen corresponding path program 100 times [2022-03-15 15:31:08,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:08,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809477490] [2022-03-15 15:31:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:08,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:08,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:08,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809477490] [2022-03-15 15:31:08,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809477490] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:08,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393780682] [2022-03-15 15:31:08,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:31:08,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:08,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:08,648 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:08,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-15 15:31:08,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:31:08,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:08,665 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:08,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:09,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:09,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393780682] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:09,567 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:09,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:31:09,567 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924513339] [2022-03-15 15:31:09,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:09,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:31:09,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:09,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:31:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1925, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:31:09,568 INFO L87 Difference]: Start difference. First operand 370 states and 834 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:12,707 INFO L93 Difference]: Finished difference Result 803 states and 1623 transitions. [2022-03-15 15:31:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 15:31:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:12,708 INFO L225 Difference]: With dead ends: 803 [2022-03-15 15:31:12,708 INFO L226 Difference]: Without dead ends: 796 [2022-03-15 15:31:12,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4179 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2116, Invalid=12404, Unknown=0, NotChecked=0, Total=14520 [2022-03-15 15:31:12,709 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 433 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:12,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 638 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:31:12,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-03-15 15:31:12,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 360. [2022-03-15 15:31:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.2506963788300838) internal successors, (808), 359 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 808 transitions. [2022-03-15 15:31:12,715 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 808 transitions. Word has length 21 [2022-03-15 15:31:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:12,715 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 808 transitions. [2022-03-15 15:31:12,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 808 transitions. [2022-03-15 15:31:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:12,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:12,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:12,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:12,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-03-15 15:31:12,927 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1407810710, now seen corresponding path program 101 times [2022-03-15 15:31:12,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:12,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573180430] [2022-03-15 15:31:12,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:12,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:13,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:13,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573180430] [2022-03-15 15:31:13,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573180430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:13,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817881860] [2022-03-15 15:31:13,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:31:13,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:13,104 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:13,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-15 15:31:13,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:31:13,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:13,122 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:13,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:13,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:14,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817881860] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:14,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:14,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:31:14,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341390122] [2022-03-15 15:31:14,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:14,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:31:14,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:31:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:31:14,094 INFO L87 Difference]: Start difference. First operand 360 states and 808 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:16,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:16,458 INFO L93 Difference]: Finished difference Result 702 states and 1405 transitions. [2022-03-15 15:31:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 15:31:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:16,459 INFO L225 Difference]: With dead ends: 702 [2022-03-15 15:31:16,459 INFO L226 Difference]: Without dead ends: 699 [2022-03-15 15:31:16,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1382, Invalid=9330, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 15:31:16,460 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 270 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:16,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 576 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:31:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-03-15 15:31:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 358. [2022-03-15 15:31:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.249299719887955) internal successors, (803), 357 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 803 transitions. [2022-03-15 15:31:16,465 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 803 transitions. Word has length 21 [2022-03-15 15:31:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:16,465 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 803 transitions. [2022-03-15 15:31:16,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 803 transitions. [2022-03-15 15:31:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:16,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:16,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:16,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:16,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:16,666 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1158349670, now seen corresponding path program 102 times [2022-03-15 15:31:16,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:16,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910998173] [2022-03-15 15:31:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:16,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:16,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:16,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910998173] [2022-03-15 15:31:16,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910998173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:16,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848372664] [2022-03-15 15:31:16,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:31:16,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:16,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:16,856 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:16,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-15 15:31:16,873 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:31:16,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:16,873 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:16,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:17,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:17,840 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848372664] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:17,840 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:17,840 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:31:17,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265869109] [2022-03-15 15:31:17,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:17,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:31:17,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:31:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2013, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:31:17,841 INFO L87 Difference]: Start difference. First operand 358 states and 803 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:22,687 INFO L93 Difference]: Finished difference Result 826 states and 1654 transitions. [2022-03-15 15:31:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-15 15:31:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:22,689 INFO L225 Difference]: With dead ends: 826 [2022-03-15 15:31:22,689 INFO L226 Difference]: Without dead ends: 820 [2022-03-15 15:31:22,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7041 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3081, Invalid=19269, Unknown=0, NotChecked=0, Total=22350 [2022-03-15 15:31:22,690 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 516 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:22,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 606 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:31:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-03-15 15:31:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 363. [2022-03-15 15:31:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.251381215469613) internal successors, (815), 362 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 815 transitions. [2022-03-15 15:31:22,696 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 815 transitions. Word has length 21 [2022-03-15 15:31:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:22,696 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 815 transitions. [2022-03-15 15:31:22,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 815 transitions. [2022-03-15 15:31:22,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:22,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:22,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:22,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:22,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-15 15:31:22,897 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:22,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:22,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1151026850, now seen corresponding path program 103 times [2022-03-15 15:31:22,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:22,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738557753] [2022-03-15 15:31:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:22,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:23,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:23,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738557753] [2022-03-15 15:31:23,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738557753] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:23,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990508048] [2022-03-15 15:31:23,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:31:23,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:23,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:23,079 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:23,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-15 15:31:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:23,097 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:23,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:23,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:24,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990508048] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:24,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:24,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:31:24,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949856111] [2022-03-15 15:31:24,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:24,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:31:24,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:24,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:31:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:31:24,025 INFO L87 Difference]: Start difference. First operand 363 states and 815 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:28,357 INFO L93 Difference]: Finished difference Result 869 states and 1735 transitions. [2022-03-15 15:31:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 15:31:28,358 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:28,359 INFO L225 Difference]: With dead ends: 869 [2022-03-15 15:31:28,359 INFO L226 Difference]: Without dead ends: 855 [2022-03-15 15:31:28,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6800 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3026, Invalid=18436, Unknown=0, NotChecked=0, Total=21462 [2022-03-15 15:31:28,360 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 484 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:28,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 629 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:31:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-03-15 15:31:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 372. [2022-03-15 15:31:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.266846361185984) internal successors, (841), 371 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 841 transitions. [2022-03-15 15:31:28,365 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 841 transitions. Word has length 21 [2022-03-15 15:31:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:28,365 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 841 transitions. [2022-03-15 15:31:28,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 841 transitions. [2022-03-15 15:31:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:28,366 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:28,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:28,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-03-15 15:31:28,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-03-15 15:31:28,566 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1032651102, now seen corresponding path program 104 times [2022-03-15 15:31:28,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:28,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004696344] [2022-03-15 15:31:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:28,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:28,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:28,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004696344] [2022-03-15 15:31:28,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004696344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:28,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716951852] [2022-03-15 15:31:28,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:31:28,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:28,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:28,743 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:28,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-15 15:31:28,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:31:28,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:28,762 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:28,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:29,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:29,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716951852] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:29,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:29,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:31:29,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243071228] [2022-03-15 15:31:29,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:29,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:31:29,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:31:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:31:29,698 INFO L87 Difference]: Start difference. First operand 372 states and 841 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:34,537 INFO L93 Difference]: Finished difference Result 887 states and 1768 transitions. [2022-03-15 15:31:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-03-15 15:31:34,537 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:34,539 INFO L225 Difference]: With dead ends: 887 [2022-03-15 15:31:34,539 INFO L226 Difference]: Without dead ends: 866 [2022-03-15 15:31:34,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8015 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3428, Invalid=21378, Unknown=0, NotChecked=0, Total=24806 [2022-03-15 15:31:34,540 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 435 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:34,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 661 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:31:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-03-15 15:31:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 368. [2022-03-15 15:31:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.2534059945504086) internal successors, (827), 367 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 827 transitions. [2022-03-15 15:31:34,546 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 827 transitions. Word has length 21 [2022-03-15 15:31:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:34,546 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 827 transitions. [2022-03-15 15:31:34,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 827 transitions. [2022-03-15 15:31:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:34,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:34,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:34,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-03-15 15:31:34,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:34,747 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:34,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1672621730, now seen corresponding path program 105 times [2022-03-15 15:31:34,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:34,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978282065] [2022-03-15 15:31:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:34,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:34,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:34,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978282065] [2022-03-15 15:31:34,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978282065] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:34,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573856883] [2022-03-15 15:31:34,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:31:34,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:34,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:34,923 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:34,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-15 15:31:34,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:31:34,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:34,947 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:34,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:35,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:35,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573856883] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:35,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:35,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:31:35,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539309771] [2022-03-15 15:31:35,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:35,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:31:35,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:35,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:31:35,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:31:35,864 INFO L87 Difference]: Start difference. First operand 368 states and 827 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:39,099 INFO L93 Difference]: Finished difference Result 786 states and 1583 transitions. [2022-03-15 15:31:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 15:31:39,099 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:39,100 INFO L225 Difference]: With dead ends: 786 [2022-03-15 15:31:39,100 INFO L226 Difference]: Without dead ends: 772 [2022-03-15 15:31:39,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2250, Invalid=13752, Unknown=0, NotChecked=0, Total=16002 [2022-03-15 15:31:39,101 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 271 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:39,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 821 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:31:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-03-15 15:31:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 366. [2022-03-15 15:31:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 2.249315068493151) internal successors, (821), 365 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 821 transitions. [2022-03-15 15:31:39,107 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 821 transitions. Word has length 21 [2022-03-15 15:31:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:39,107 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 821 transitions. [2022-03-15 15:31:39,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 821 transitions. [2022-03-15 15:31:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:39,107 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:39,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:39,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:39,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:39,308 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash -455217064, now seen corresponding path program 106 times [2022-03-15 15:31:39,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:39,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534547522] [2022-03-15 15:31:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:39,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:39,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:39,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534547522] [2022-03-15 15:31:39,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534547522] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:39,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492924260] [2022-03-15 15:31:39,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:31:39,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:39,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:39,491 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:39,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-15 15:31:39,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:31:39,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:39,510 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:39,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:39,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:40,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492924260] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:40,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:40,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:31:40,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49792534] [2022-03-15 15:31:40,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:40,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:31:40,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:31:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:31:40,479 INFO L87 Difference]: Start difference. First operand 366 states and 821 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:44,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:44,799 INFO L93 Difference]: Finished difference Result 804 states and 1591 transitions. [2022-03-15 15:31:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-15 15:31:44,799 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:44,800 INFO L225 Difference]: With dead ends: 804 [2022-03-15 15:31:44,800 INFO L226 Difference]: Without dead ends: 798 [2022-03-15 15:31:44,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5804 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2683, Invalid=16499, Unknown=0, NotChecked=0, Total=19182 [2022-03-15 15:31:44,801 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 497 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:44,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 712 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:31:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-15 15:31:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 367. [2022-03-15 15:31:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 2.248633879781421) internal successors, (823), 366 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 823 transitions. [2022-03-15 15:31:44,806 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 823 transitions. Word has length 21 [2022-03-15 15:31:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:44,806 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 823 transitions. [2022-03-15 15:31:44,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 823 transitions. [2022-03-15 15:31:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:44,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:44,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:44,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:45,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:45,008 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash -462539884, now seen corresponding path program 107 times [2022-03-15 15:31:45,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:45,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172672394] [2022-03-15 15:31:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:45,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:45,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172672394] [2022-03-15 15:31:45,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172672394] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:45,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691711485] [2022-03-15 15:31:45,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:31:45,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:45,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:45,190 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:45,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-15 15:31:45,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:31:45,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:45,208 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:45,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:45,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:46,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691711485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:46,145 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:46,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:31:46,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795393684] [2022-03-15 15:31:46,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:46,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:31:46,146 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:46,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:31:46,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:31:46,146 INFO L87 Difference]: Start difference. First operand 367 states and 823 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:49,502 INFO L93 Difference]: Finished difference Result 823 states and 1636 transitions. [2022-03-15 15:31:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 15:31:49,502 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:49,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:49,503 INFO L225 Difference]: With dead ends: 823 [2022-03-15 15:31:49,504 INFO L226 Difference]: Without dead ends: 809 [2022-03-15 15:31:49,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4733 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2364, Invalid=13638, Unknown=0, NotChecked=0, Total=16002 [2022-03-15 15:31:49,505 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 475 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:49,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 667 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:31:49,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-03-15 15:31:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 372. [2022-03-15 15:31:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.261455525606469) internal successors, (839), 371 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 839 transitions. [2022-03-15 15:31:49,510 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 839 transitions. Word has length 21 [2022-03-15 15:31:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:49,511 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 839 transitions. [2022-03-15 15:31:49,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:49,511 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 839 transitions. [2022-03-15 15:31:49,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:49,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:49,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:49,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-15 15:31:49,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:49,712 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:49,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1648749460, now seen corresponding path program 108 times [2022-03-15 15:31:49,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:49,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522766772] [2022-03-15 15:31:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:49,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:49,890 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:49,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522766772] [2022-03-15 15:31:49,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522766772] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:49,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758285057] [2022-03-15 15:31:49,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:31:49,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:49,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:49,891 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:49,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-15 15:31:49,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:31:49,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:31:49,914 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:49,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:50,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:50,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758285057] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:50,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:50,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:31:50,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868667441] [2022-03-15 15:31:50,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:50,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:31:50,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:31:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:31:50,839 INFO L87 Difference]: Start difference. First operand 372 states and 839 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:31:54,710 INFO L93 Difference]: Finished difference Result 856 states and 1717 transitions. [2022-03-15 15:31:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 15:31:54,710 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:31:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:31:54,711 INFO L225 Difference]: With dead ends: 856 [2022-03-15 15:31:54,711 INFO L226 Difference]: Without dead ends: 835 [2022-03-15 15:31:54,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5837 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2808, Invalid=16374, Unknown=0, NotChecked=0, Total=19182 [2022-03-15 15:31:54,713 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 473 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:31:54,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 641 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:31:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-03-15 15:31:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 370. [2022-03-15 15:31:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.2466124661246614) internal successors, (829), 369 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 829 transitions. [2022-03-15 15:31:54,724 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 829 transitions. Word has length 21 [2022-03-15 15:31:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:31:54,724 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 829 transitions. [2022-03-15 15:31:54,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:31:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 829 transitions. [2022-03-15 15:31:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:31:54,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:31:54,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:31:54,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-03-15 15:31:54,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-15 15:31:54,925 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:31:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:31:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1373167254, now seen corresponding path program 109 times [2022-03-15 15:31:54,926 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:31:54,926 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632125813] [2022-03-15 15:31:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:31:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:31:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:55,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:31:55,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632125813] [2022-03-15 15:31:55,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632125813] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:31:55,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553026741] [2022-03-15 15:31:55,107 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:31:55,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:31:55,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:31:55,108 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:31:55,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-15 15:31:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:31:55,126 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:31:55,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:31:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:55,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:31:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:31:56,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553026741] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:31:56,085 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:31:56,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:31:56,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99914112] [2022-03-15 15:31:56,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:31:56,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:31:56,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:31:56,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:31:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:31:56,086 INFO L87 Difference]: Start difference. First operand 370 states and 829 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:01,116 INFO L93 Difference]: Finished difference Result 810 states and 1630 transitions. [2022-03-15 15:32:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-03-15 15:32:01,117 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:01,118 INFO L225 Difference]: With dead ends: 810 [2022-03-15 15:32:01,118 INFO L226 Difference]: Without dead ends: 804 [2022-03-15 15:32:01,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7481 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3173, Invalid=20389, Unknown=0, NotChecked=0, Total=23562 [2022-03-15 15:32:01,119 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 420 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:01,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 805 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 15:32:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-15 15:32:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 374. [2022-03-15 15:32:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.2493297587131367) internal successors, (839), 373 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 839 transitions. [2022-03-15 15:32:01,125 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 839 transitions. Word has length 21 [2022-03-15 15:32:01,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:01,125 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 839 transitions. [2022-03-15 15:32:01,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:01,125 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 839 transitions. [2022-03-15 15:32:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:01,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:01,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:01,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-03-15 15:32:01,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-03-15 15:32:01,326 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1380490074, now seen corresponding path program 110 times [2022-03-15 15:32:01,326 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:01,326 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217690330] [2022-03-15 15:32:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:01,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:01,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:01,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217690330] [2022-03-15 15:32:01,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217690330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:01,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139856592] [2022-03-15 15:32:01,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:32:01,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:01,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:01,510 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:01,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-15 15:32:01,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:32:01,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:01,528 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:01,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:01,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:02,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139856592] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:02,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:02,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:02,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676032897] [2022-03-15 15:32:02,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:02,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:02,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:02,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:02,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:02,450 INFO L87 Difference]: Start difference. First operand 374 states and 839 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:06,432 INFO L93 Difference]: Finished difference Result 850 states and 1707 transitions. [2022-03-15 15:32:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-15 15:32:06,432 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:06,433 INFO L225 Difference]: With dead ends: 850 [2022-03-15 15:32:06,433 INFO L226 Difference]: Without dead ends: 836 [2022-03-15 15:32:06,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6389 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2947, Invalid=17359, Unknown=0, NotChecked=0, Total=20306 [2022-03-15 15:32:06,434 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 444 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:06,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 694 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:32:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-03-15 15:32:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 376. [2022-03-15 15:32:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 2.264) internal successors, (849), 375 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 849 transitions. [2022-03-15 15:32:06,440 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 849 transitions. Word has length 21 [2022-03-15 15:32:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:06,440 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 849 transitions. [2022-03-15 15:32:06,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 849 transitions. [2022-03-15 15:32:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:06,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:06,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:06,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-03-15 15:32:06,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-03-15 15:32:06,656 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash 730799270, now seen corresponding path program 111 times [2022-03-15 15:32:06,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:06,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413171946] [2022-03-15 15:32:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:06,832 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:06,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413171946] [2022-03-15 15:32:06,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413171946] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:06,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680719187] [2022-03-15 15:32:06,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:32:06,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:06,834 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:06,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-15 15:32:06,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:32:06,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:06,851 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:06,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:07,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:07,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680719187] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:07,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:07,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:07,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599178885] [2022-03-15 15:32:07,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:07,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:07,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1904, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:07,771 INFO L87 Difference]: Start difference. First operand 376 states and 849 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:11,080 INFO L93 Difference]: Finished difference Result 843 states and 1698 transitions. [2022-03-15 15:32:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 15:32:11,081 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:11,082 INFO L225 Difference]: With dead ends: 843 [2022-03-15 15:32:11,082 INFO L226 Difference]: Without dead ends: 829 [2022-03-15 15:32:11,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5089 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2577, Invalid=14453, Unknown=0, NotChecked=0, Total=17030 [2022-03-15 15:32:11,083 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 432 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:11,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 531 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:32:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-03-15 15:32:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 354. [2022-03-15 15:32:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 2.2521246458923514) internal successors, (795), 353 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 795 transitions. [2022-03-15 15:32:11,095 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 795 transitions. Word has length 21 [2022-03-15 15:32:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:11,095 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 795 transitions. [2022-03-15 15:32:11,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:11,095 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 795 transitions. [2022-03-15 15:32:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:11,096 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:11,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:11,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-03-15 15:32:11,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:11,296 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash -70243496, now seen corresponding path program 112 times [2022-03-15 15:32:11,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:11,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787780308] [2022-03-15 15:32:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:11,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:11,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:11,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787780308] [2022-03-15 15:32:11,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787780308] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:11,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745462704] [2022-03-15 15:32:11,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:32:11,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:11,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:11,475 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:11,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-15 15:32:11,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:32:11,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:11,493 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:11,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:11,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:12,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745462704] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:12,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:12,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:32:12,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382414018] [2022-03-15 15:32:12,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:12,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:32:12,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:32:12,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:32:12,460 INFO L87 Difference]: Start difference. First operand 354 states and 795 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:14,901 INFO L93 Difference]: Finished difference Result 709 states and 1418 transitions. [2022-03-15 15:32:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 15:32:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:14,902 INFO L225 Difference]: With dead ends: 709 [2022-03-15 15:32:14,902 INFO L226 Difference]: Without dead ends: 706 [2022-03-15 15:32:14,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2902 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1422, Invalid=9290, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 15:32:14,903 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 319 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:14,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 608 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:32:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-15 15:32:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 352. [2022-03-15 15:32:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.2535612535612537) internal successors, (791), 351 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 791 transitions. [2022-03-15 15:32:14,908 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 791 transitions. Word has length 21 [2022-03-15 15:32:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:14,908 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 791 transitions. [2022-03-15 15:32:14,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:14,908 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 791 transitions. [2022-03-15 15:32:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:14,909 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:14,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:14,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-03-15 15:32:15,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:15,109 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1182207148, now seen corresponding path program 113 times [2022-03-15 15:32:15,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:15,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028326422] [2022-03-15 15:32:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:15,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:15,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:15,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028326422] [2022-03-15 15:32:15,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028326422] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:15,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566652664] [2022-03-15 15:32:15,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:32:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:15,283 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:15,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-15 15:32:15,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:32:15,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:15,300 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:15,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:15,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:16,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566652664] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:16,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:16,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:32:16,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078001546] [2022-03-15 15:32:16,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:16,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:32:16,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:32:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:32:16,243 INFO L87 Difference]: Start difference. First operand 352 states and 791 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:21,327 INFO L93 Difference]: Finished difference Result 796 states and 1607 transitions. [2022-03-15 15:32:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-15 15:32:21,327 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:21,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:21,328 INFO L225 Difference]: With dead ends: 796 [2022-03-15 15:32:21,328 INFO L226 Difference]: Without dead ends: 793 [2022-03-15 15:32:21,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7438 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3025, Invalid=20231, Unknown=0, NotChecked=0, Total=23256 [2022-03-15 15:32:21,329 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 451 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:21,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 720 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:32:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-03-15 15:32:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 355. [2022-03-15 15:32:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.2542372881355934) internal successors, (798), 354 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 798 transitions. [2022-03-15 15:32:21,334 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 798 transitions. Word has length 21 [2022-03-15 15:32:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:21,334 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 798 transitions. [2022-03-15 15:32:21,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 798 transitions. [2022-03-15 15:32:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:21,335 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:21,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:21,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-03-15 15:32:21,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-03-15 15:32:21,537 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:21,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:21,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1189529968, now seen corresponding path program 114 times [2022-03-15 15:32:21,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:21,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146856805] [2022-03-15 15:32:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:21,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:21,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:21,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146856805] [2022-03-15 15:32:21,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146856805] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:21,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087800757] [2022-03-15 15:32:21,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:32:21,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:21,715 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:21,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-15 15:32:21,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:32:21,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:21,733 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:21,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:22,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:22,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087800757] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:22,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:22,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:22,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910819732] [2022-03-15 15:32:22,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:22,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:22,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:22,657 INFO L87 Difference]: Start difference. First operand 355 states and 798 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:27,165 INFO L93 Difference]: Finished difference Result 837 states and 1676 transitions. [2022-03-15 15:32:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 15:32:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:27,167 INFO L225 Difference]: With dead ends: 837 [2022-03-15 15:32:27,167 INFO L226 Difference]: Without dead ends: 830 [2022-03-15 15:32:27,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6892 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2931, Invalid=18531, Unknown=0, NotChecked=0, Total=21462 [2022-03-15 15:32:27,168 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 495 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:27,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 738 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:32:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-03-15 15:32:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 356. [2022-03-15 15:32:27,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.267605633802817) internal successors, (805), 355 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 805 transitions. [2022-03-15 15:32:27,174 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 805 transitions. Word has length 21 [2022-03-15 15:32:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:27,174 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 805 transitions. [2022-03-15 15:32:27,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 805 transitions. [2022-03-15 15:32:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:27,175 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:27,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:27,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-03-15 15:32:27,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:27,392 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash 921759376, now seen corresponding path program 115 times [2022-03-15 15:32:27,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:27,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29281099] [2022-03-15 15:32:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:27,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:27,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29281099] [2022-03-15 15:32:27,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29281099] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:27,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413422474] [2022-03-15 15:32:27,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:32:27,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:27,610 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:27,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-15 15:32:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:27,628 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:27,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:28,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:28,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413422474] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:28,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:28,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:28,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991729609] [2022-03-15 15:32:28,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:28,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:28,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:28,566 INFO L87 Difference]: Start difference. First operand 356 states and 805 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:32,685 INFO L93 Difference]: Finished difference Result 861 states and 1734 transitions. [2022-03-15 15:32:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-15 15:32:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:32,686 INFO L225 Difference]: With dead ends: 861 [2022-03-15 15:32:32,686 INFO L226 Difference]: Without dead ends: 854 [2022-03-15 15:32:32,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6461 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2922, Invalid=17384, Unknown=0, NotChecked=0, Total=20306 [2022-03-15 15:32:32,687 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 413 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:32,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 681 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:32:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-03-15 15:32:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 350. [2022-03-15 15:32:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 2.2492836676217767) internal successors, (785), 349 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 785 transitions. [2022-03-15 15:32:32,692 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 785 transitions. Word has length 21 [2022-03-15 15:32:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:32,692 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 785 transitions. [2022-03-15 15:32:32,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 785 transitions. [2022-03-15 15:32:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:32,693 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:32,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:32,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-03-15 15:32:32,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:32,893 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:32,894 INFO L85 PathProgramCache]: Analyzing trace with hash -799486760, now seen corresponding path program 116 times [2022-03-15 15:32:32,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:32,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735813703] [2022-03-15 15:32:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:33,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:33,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735813703] [2022-03-15 15:32:33,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735813703] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:33,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480121528] [2022-03-15 15:32:33,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:32:33,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:33,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:33,075 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:33,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-03-15 15:32:33,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:32:33,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:33,094 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:33,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:33,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:34,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480121528] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:34,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:34,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:32:34,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950125900] [2022-03-15 15:32:34,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:34,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:32:34,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:34,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:32:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1999, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:32:34,058 INFO L87 Difference]: Start difference. First operand 350 states and 785 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:37,542 INFO L93 Difference]: Finished difference Result 755 states and 1517 transitions. [2022-03-15 15:32:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 15:32:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:37,543 INFO L225 Difference]: With dead ends: 755 [2022-03-15 15:32:37,543 INFO L226 Difference]: Without dead ends: 752 [2022-03-15 15:32:37,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4351 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2105, Invalid=12901, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 15:32:37,544 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 355 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:37,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 644 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:32:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-03-15 15:32:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 351. [2022-03-15 15:32:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 2.2485714285714287) internal successors, (787), 350 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 787 transitions. [2022-03-15 15:32:37,550 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 787 transitions. Word has length 21 [2022-03-15 15:32:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:37,550 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 787 transitions. [2022-03-15 15:32:37,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 787 transitions. [2022-03-15 15:32:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:37,550 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:37,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:37,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-03-15 15:32:37,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:37,751 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:37,751 INFO L85 PathProgramCache]: Analyzing trace with hash -806809580, now seen corresponding path program 117 times [2022-03-15 15:32:37,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:37,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068189615] [2022-03-15 15:32:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:37,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:37,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068189615] [2022-03-15 15:32:37,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068189615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:37,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400753571] [2022-03-15 15:32:37,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:32:37,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:37,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:37,962 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:37,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-03-15 15:32:37,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:32:37,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:37,981 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:37,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:38,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:38,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400753571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:38,910 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:38,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:38,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928221723] [2022-03-15 15:32:38,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:38,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:38,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1904, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:38,911 INFO L87 Difference]: Start difference. First operand 351 states and 787 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:41,584 INFO L93 Difference]: Finished difference Result 773 states and 1553 transitions. [2022-03-15 15:32:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 15:32:41,584 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:41,585 INFO L225 Difference]: With dead ends: 773 [2022-03-15 15:32:41,585 INFO L226 Difference]: Without dead ends: 766 [2022-03-15 15:32:41,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3735 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1899, Invalid=11211, Unknown=0, NotChecked=0, Total=13110 [2022-03-15 15:32:41,586 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 444 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:41,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 560 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:32:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-03-15 15:32:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 356. [2022-03-15 15:32:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.2619718309859156) internal successors, (803), 355 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 803 transitions. [2022-03-15 15:32:41,591 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 803 transitions. Word has length 21 [2022-03-15 15:32:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:41,591 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 803 transitions. [2022-03-15 15:32:41,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 803 transitions. [2022-03-15 15:32:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:41,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:41,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:41,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-03-15 15:32:41,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:41,792 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1304479764, now seen corresponding path program 118 times [2022-03-15 15:32:41,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:41,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061804742] [2022-03-15 15:32:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:41,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:41,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:41,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061804742] [2022-03-15 15:32:41,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061804742] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:41,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675537909] [2022-03-15 15:32:41,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:32:41,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:41,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:41,969 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:41,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-03-15 15:32:41,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:32:41,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:41,988 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:41,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:42,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:42,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675537909] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:42,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:42,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:42,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876023993] [2022-03-15 15:32:42,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:42,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:42,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:42,906 INFO L87 Difference]: Start difference. First operand 356 states and 803 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:46,091 INFO L93 Difference]: Finished difference Result 813 states and 1643 transitions. [2022-03-15 15:32:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 15:32:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:46,092 INFO L225 Difference]: With dead ends: 813 [2022-03-15 15:32:46,092 INFO L226 Difference]: Without dead ends: 806 [2022-03-15 15:32:46,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5004 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2415, Invalid=14097, Unknown=0, NotChecked=0, Total=16512 [2022-03-15 15:32:46,093 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 420 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:46,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 566 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:32:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-03-15 15:32:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 352. [2022-03-15 15:32:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 2.247863247863248) internal successors, (789), 351 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 789 transitions. [2022-03-15 15:32:46,097 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 789 transitions. Word has length 21 [2022-03-15 15:32:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:46,097 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 789 transitions. [2022-03-15 15:32:46,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 789 transitions. [2022-03-15 15:32:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:46,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:46,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:46,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-03-15 15:32:46,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:46,298 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:46,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1717436950, now seen corresponding path program 119 times [2022-03-15 15:32:46,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:46,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061098998] [2022-03-15 15:32:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:46,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:46,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:46,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061098998] [2022-03-15 15:32:46,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061098998] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:46,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622394922] [2022-03-15 15:32:46,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:32:46,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:46,476 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:46,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-03-15 15:32:46,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:32:46,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:46,494 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:46,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:46,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:47,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622394922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:47,420 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:47,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:32:47,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901718576] [2022-03-15 15:32:47,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:47,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:32:47,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:47,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:32:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2002, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:32:47,421 INFO L87 Difference]: Start difference. First operand 352 states and 789 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:51,544 INFO L93 Difference]: Finished difference Result 763 states and 1547 transitions. [2022-03-15 15:32:51,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 15:32:51,544 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:51,545 INFO L225 Difference]: With dead ends: 763 [2022-03-15 15:32:51,545 INFO L226 Difference]: Without dead ends: 760 [2022-03-15 15:32:51,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2629, Invalid=16831, Unknown=0, NotChecked=0, Total=19460 [2022-03-15 15:32:51,546 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 407 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:51,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 682 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:32:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-03-15 15:32:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 355. [2022-03-15 15:32:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.248587570621469) internal successors, (796), 354 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 796 transitions. [2022-03-15 15:32:51,551 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 796 transitions. Word has length 21 [2022-03-15 15:32:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:51,552 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 796 transitions. [2022-03-15 15:32:51,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 796 transitions. [2022-03-15 15:32:51,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:51,552 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:51,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:51,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-03-15 15:32:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-03-15 15:32:51,753 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1724759770, now seen corresponding path program 120 times [2022-03-15 15:32:51,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:51,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273496959] [2022-03-15 15:32:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:51,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:51,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:51,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273496959] [2022-03-15 15:32:51,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273496959] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:51,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369984580] [2022-03-15 15:32:51,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:32:51,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:51,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:51,935 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:51,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-03-15 15:32:51,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:32:51,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:32:51,953 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:51,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:52,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:52,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369984580] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:52,882 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:52,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:52,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291847342] [2022-03-15 15:32:52,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:52,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:52,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:52,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:52,883 INFO L87 Difference]: Start difference. First operand 355 states and 796 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:32:56,078 INFO L93 Difference]: Finished difference Result 787 states and 1590 transitions. [2022-03-15 15:32:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 15:32:56,079 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:32:56,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:32:56,080 INFO L225 Difference]: With dead ends: 787 [2022-03-15 15:32:56,080 INFO L226 Difference]: Without dead ends: 780 [2022-03-15 15:32:56,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5012 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2369, Invalid=14143, Unknown=0, NotChecked=0, Total=16512 [2022-03-15 15:32:56,081 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 486 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:32:56,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 536 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:32:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-03-15 15:32:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 356. [2022-03-15 15:32:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.2619718309859156) internal successors, (803), 355 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 803 transitions. [2022-03-15 15:32:56,086 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 803 transitions. Word has length 21 [2022-03-15 15:32:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:32:56,086 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 803 transitions. [2022-03-15 15:32:56,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:32:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 803 transitions. [2022-03-15 15:32:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:32:56,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:32:56,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:32:56,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-03-15 15:32:56,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:56,287 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:32:56,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:32:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash 386529574, now seen corresponding path program 121 times [2022-03-15 15:32:56,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:32:56,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062188819] [2022-03-15 15:32:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:32:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:32:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:56,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:32:56,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062188819] [2022-03-15 15:32:56,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062188819] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:32:56,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887879394] [2022-03-15 15:32:56,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:32:56,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:32:56,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:32:56,467 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:32:56,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-03-15 15:32:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:32:56,486 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:32:56,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:32:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:56,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:32:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:32:57,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887879394] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:32:57,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:32:57,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:32:57,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910641957] [2022-03-15 15:32:57,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:32:57,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:32:57,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:32:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:32:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:32:57,422 INFO L87 Difference]: Start difference. First operand 356 states and 803 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:00,286 INFO L93 Difference]: Finished difference Result 796 states and 1606 transitions. [2022-03-15 15:33:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 15:33:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:00,287 INFO L225 Difference]: With dead ends: 796 [2022-03-15 15:33:00,287 INFO L226 Difference]: Without dead ends: 789 [2022-03-15 15:33:00,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4153 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2179, Invalid=12101, Unknown=0, NotChecked=0, Total=14280 [2022-03-15 15:33:00,289 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 384 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:00,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 570 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:33:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-03-15 15:33:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 348. [2022-03-15 15:33:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 2.250720461095101) internal successors, (781), 347 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 781 transitions. [2022-03-15 15:33:00,294 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 781 transitions. Word has length 21 [2022-03-15 15:33:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:00,294 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 781 transitions. [2022-03-15 15:33:00,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 781 transitions. [2022-03-15 15:33:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:00,295 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:00,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:00,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:00,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-03-15 15:33:00,495 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1799050412, now seen corresponding path program 122 times [2022-03-15 15:33:00,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:00,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185132988] [2022-03-15 15:33:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:00,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:00,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185132988] [2022-03-15 15:33:00,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185132988] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:00,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690819488] [2022-03-15 15:33:00,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:33:00,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:00,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:00,678 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:00,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-03-15 15:33:00,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:33:00,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:00,696 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:00,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:01,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:01,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690819488] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:01,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:01,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:33:01,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707615526] [2022-03-15 15:33:01,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:01,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:33:01,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:33:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:33:01,666 INFO L87 Difference]: Start difference. First operand 348 states and 781 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:06,099 INFO L93 Difference]: Finished difference Result 812 states and 1640 transitions. [2022-03-15 15:33:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-15 15:33:06,099 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:06,100 INFO L225 Difference]: With dead ends: 812 [2022-03-15 15:33:06,100 INFO L226 Difference]: Without dead ends: 806 [2022-03-15 15:33:06,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6225 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2857, Invalid=17165, Unknown=0, NotChecked=0, Total=20022 [2022-03-15 15:33:06,101 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 443 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:06,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 604 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:33:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-03-15 15:33:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 353. [2022-03-15 15:33:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.252840909090909) internal successors, (793), 352 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 793 transitions. [2022-03-15 15:33:06,107 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 793 transitions. Word has length 21 [2022-03-15 15:33:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:06,107 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 793 transitions. [2022-03-15 15:33:06,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 793 transitions. [2022-03-15 15:33:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:06,107 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:06,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:06,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-03-15 15:33:06,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-03-15 15:33:06,308 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:06,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1806373232, now seen corresponding path program 123 times [2022-03-15 15:33:06,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:06,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616340165] [2022-03-15 15:33:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:06,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:06,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616340165] [2022-03-15 15:33:06,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616340165] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:06,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429879157] [2022-03-15 15:33:06,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:33:06,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:06,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:06,487 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:06,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-03-15 15:33:06,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:33:06,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:06,505 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:06,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:06,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:07,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429879157] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:07,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:07,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:07,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527140556] [2022-03-15 15:33:07,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:07,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:07,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1912, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:07,446 INFO L87 Difference]: Start difference. First operand 353 states and 793 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:11,523 INFO L93 Difference]: Finished difference Result 863 states and 1737 transitions. [2022-03-15 15:33:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-15 15:33:11,523 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:11,524 INFO L225 Difference]: With dead ends: 863 [2022-03-15 15:33:11,524 INFO L226 Difference]: Without dead ends: 849 [2022-03-15 15:33:11,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6302 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2858, Invalid=17164, Unknown=0, NotChecked=0, Total=20022 [2022-03-15 15:33:11,526 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 507 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:11,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 630 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:33:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-03-15 15:33:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 362. [2022-03-15 15:33:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.268698060941828) internal successors, (819), 361 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 819 transitions. [2022-03-15 15:33:11,532 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 819 transitions. Word has length 21 [2022-03-15 15:33:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:11,532 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 819 transitions. [2022-03-15 15:33:11,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 819 transitions. [2022-03-15 15:33:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:11,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:11,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:11,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:11,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-03-15 15:33:11,747 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:11,748 INFO L85 PathProgramCache]: Analyzing trace with hash 304916112, now seen corresponding path program 124 times [2022-03-15 15:33:11,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:11,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676167728] [2022-03-15 15:33:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:11,928 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:11,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676167728] [2022-03-15 15:33:11,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676167728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:11,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390567122] [2022-03-15 15:33:11,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:33:11,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:11,930 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:11,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-03-15 15:33:11,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:33:11,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:11,947 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:12,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:12,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390567122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:12,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:12,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:12,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034809355] [2022-03-15 15:33:12,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:12,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:12,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:12,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:12,879 INFO L87 Difference]: Start difference. First operand 362 states and 819 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:17,617 INFO L93 Difference]: Finished difference Result 898 states and 1794 transitions. [2022-03-15 15:33:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-03-15 15:33:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:17,618 INFO L225 Difference]: With dead ends: 898 [2022-03-15 15:33:17,618 INFO L226 Difference]: Without dead ends: 884 [2022-03-15 15:33:17,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7630 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3295, Invalid=20267, Unknown=0, NotChecked=0, Total=23562 [2022-03-15 15:33:17,620 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 459 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:17,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 722 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:33:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-03-15 15:33:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 358. [2022-03-15 15:33:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.2549019607843137) internal successors, (805), 357 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 805 transitions. [2022-03-15 15:33:17,625 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 805 transitions. Word has length 21 [2022-03-15 15:33:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:17,625 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 805 transitions. [2022-03-15 15:33:17,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 805 transitions. [2022-03-15 15:33:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:17,626 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:17,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:17,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:17,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:17,826 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:17,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1284778352, now seen corresponding path program 125 times [2022-03-15 15:33:17,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:17,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159300791] [2022-03-15 15:33:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:17,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:18,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:18,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159300791] [2022-03-15 15:33:18,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159300791] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:18,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458610239] [2022-03-15 15:33:18,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:33:18,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:18,008 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:18,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-03-15 15:33:18,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:33:18,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:18,031 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:18,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:18,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:18,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458610239] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:18,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:18,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:18,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692939440] [2022-03-15 15:33:18,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:18,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:18,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:18,969 INFO L87 Difference]: Start difference. First operand 358 states and 805 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:22,110 INFO L93 Difference]: Finished difference Result 792 states and 1593 transitions. [2022-03-15 15:33:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-15 15:33:22,111 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:22,111 INFO L225 Difference]: With dead ends: 792 [2022-03-15 15:33:22,111 INFO L226 Difference]: Without dead ends: 778 [2022-03-15 15:33:22,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2233, Invalid=13517, Unknown=0, NotChecked=0, Total=15750 [2022-03-15 15:33:22,112 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 348 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:22,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 571 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:33:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-15 15:33:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 356. [2022-03-15 15:33:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.250704225352113) internal successors, (799), 355 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 799 transitions. [2022-03-15 15:33:22,117 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 799 transitions. Word has length 21 [2022-03-15 15:33:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:22,117 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 799 transitions. [2022-03-15 15:33:22,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 799 transitions. [2022-03-15 15:33:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:22,118 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:22,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:22,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-03-15 15:33:22,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:22,318 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:22,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash 882350150, now seen corresponding path program 126 times [2022-03-15 15:33:22,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:22,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091928281] [2022-03-15 15:33:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:22,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:22,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:22,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091928281] [2022-03-15 15:33:22,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091928281] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:22,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602249791] [2022-03-15 15:33:22,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:33:22,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:22,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:22,499 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:22,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-03-15 15:33:22,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:33:22,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:22,518 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:22,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:22,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:23,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602249791] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:23,476 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:23,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:33:23,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592219908] [2022-03-15 15:33:23,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:23,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:33:23,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:33:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2001, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:33:23,477 INFO L87 Difference]: Start difference. First operand 356 states and 799 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:26,945 INFO L93 Difference]: Finished difference Result 757 states and 1523 transitions. [2022-03-15 15:33:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 15:33:26,946 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:26,947 INFO L225 Difference]: With dead ends: 757 [2022-03-15 15:33:26,947 INFO L226 Difference]: Without dead ends: 754 [2022-03-15 15:33:26,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4319 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2142, Invalid=12864, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 15:33:26,948 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 428 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:26,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 662 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:33:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-03-15 15:33:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 357. [2022-03-15 15:33:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 2.25) internal successors, (801), 356 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 801 transitions. [2022-03-15 15:33:26,953 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 801 transitions. Word has length 21 [2022-03-15 15:33:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:26,953 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 801 transitions. [2022-03-15 15:33:26,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 801 transitions. [2022-03-15 15:33:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:26,953 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:26,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:26,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:27,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:27,154 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 875027330, now seen corresponding path program 127 times [2022-03-15 15:33:27,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:27,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977206900] [2022-03-15 15:33:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:27,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:27,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977206900] [2022-03-15 15:33:27,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977206900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:27,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852958121] [2022-03-15 15:33:27,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:33:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:27,327 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:27,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-03-15 15:33:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:27,346 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:27,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:27,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:28,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852958121] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:28,265 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:28,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:28,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868550951] [2022-03-15 15:33:28,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:28,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:28,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1906, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:28,266 INFO L87 Difference]: Start difference. First operand 357 states and 801 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:30,959 INFO L93 Difference]: Finished difference Result 770 states and 1550 transitions. [2022-03-15 15:33:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 15:33:30,960 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:30,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:30,960 INFO L225 Difference]: With dead ends: 770 [2022-03-15 15:33:30,961 INFO L226 Difference]: Without dead ends: 763 [2022-03-15 15:33:30,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1968, Invalid=11372, Unknown=0, NotChecked=0, Total=13340 [2022-03-15 15:33:30,961 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 385 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:30,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 521 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:33:30,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-03-15 15:33:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 362. [2022-03-15 15:33:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.263157894736842) internal successors, (817), 361 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 817 transitions. [2022-03-15 15:33:30,966 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 817 transitions. Word has length 21 [2022-03-15 15:33:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:30,966 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 817 transitions. [2022-03-15 15:33:30,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 817 transitions. [2022-03-15 15:33:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:30,967 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:30,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:30,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:31,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:31,167 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1308650622, now seen corresponding path program 128 times [2022-03-15 15:33:31,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:31,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825331152] [2022-03-15 15:33:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:31,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:31,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:31,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825331152] [2022-03-15 15:33:31,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825331152] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:31,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754576318] [2022-03-15 15:33:31,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:33:31,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:31,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:31,343 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:31,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-03-15 15:33:31,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:33:31,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:31,362 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:31,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:31,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:32,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754576318] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:32,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:32,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:32,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353476964] [2022-03-15 15:33:32,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:32,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:32,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:32,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:32,298 INFO L87 Difference]: Start difference. First operand 362 states and 817 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:35,689 INFO L93 Difference]: Finished difference Result 804 states and 1629 transitions. [2022-03-15 15:33:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 15:33:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:35,691 INFO L225 Difference]: With dead ends: 804 [2022-03-15 15:33:35,691 INFO L226 Difference]: Without dead ends: 797 [2022-03-15 15:33:35,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4990 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2486, Invalid=14026, Unknown=0, NotChecked=0, Total=16512 [2022-03-15 15:33:35,692 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 369 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:35,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 673 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:33:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-03-15 15:33:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 358. [2022-03-15 15:33:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 2.249299719887955) internal successors, (803), 357 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 803 transitions. [2022-03-15 15:33:35,697 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 803 transitions. Word has length 21 [2022-03-15 15:33:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:35,697 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 803 transitions. [2022-03-15 15:33:35,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 803 transitions. [2022-03-15 15:33:35,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:35,698 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:35,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:35,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:35,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:35,899 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -35600040, now seen corresponding path program 129 times [2022-03-15 15:33:35,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:35,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925729830] [2022-03-15 15:33:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:36,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:36,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925729830] [2022-03-15 15:33:36,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925729830] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:36,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449511923] [2022-03-15 15:33:36,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:33:36,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:36,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:36,088 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:36,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-03-15 15:33:36,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:33:36,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:36,107 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:36,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:36,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:37,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449511923] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:37,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:37,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:33:37,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425745087] [2022-03-15 15:33:37,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:37,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:33:37,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:33:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2002, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:33:37,080 INFO L87 Difference]: Start difference. First operand 358 states and 803 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:41,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:41,150 INFO L93 Difference]: Finished difference Result 770 states and 1561 transitions. [2022-03-15 15:33:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-15 15:33:41,151 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:41,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:41,152 INFO L225 Difference]: With dead ends: 770 [2022-03-15 15:33:41,152 INFO L226 Difference]: Without dead ends: 767 [2022-03-15 15:33:41,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5748 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2590, Invalid=16316, Unknown=0, NotChecked=0, Total=18906 [2022-03-15 15:33:41,153 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 469 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:41,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 548 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:33:41,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-03-15 15:33:41,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 361. [2022-03-15 15:33:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 2.25) internal successors, (810), 360 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 810 transitions. [2022-03-15 15:33:41,158 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 810 transitions. Word has length 21 [2022-03-15 15:33:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:41,158 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 810 transitions. [2022-03-15 15:33:41,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 810 transitions. [2022-03-15 15:33:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:41,159 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:41,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:41,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-03-15 15:33:41,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:41,359 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash -42922860, now seen corresponding path program 130 times [2022-03-15 15:33:41,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:41,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196655903] [2022-03-15 15:33:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:41,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:41,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196655903] [2022-03-15 15:33:41,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196655903] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:41,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389095837] [2022-03-15 15:33:41,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:33:41,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:41,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:41,541 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:41,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-03-15 15:33:41,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:33:41,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:41,560 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:41,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:42,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:42,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389095837] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:42,501 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:42,501 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:42,501 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858191317] [2022-03-15 15:33:42,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:42,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:42,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:42,502 INFO L87 Difference]: Start difference. First operand 361 states and 810 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:45,693 INFO L93 Difference]: Finished difference Result 793 states and 1604 transitions. [2022-03-15 15:33:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 15:33:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:45,694 INFO L225 Difference]: With dead ends: 793 [2022-03-15 15:33:45,694 INFO L226 Difference]: Without dead ends: 786 [2022-03-15 15:33:45,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4918 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2365, Invalid=13891, Unknown=0, NotChecked=0, Total=16256 [2022-03-15 15:33:45,695 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 505 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:45,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 481 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:33:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-03-15 15:33:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 362. [2022-03-15 15:33:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.263157894736842) internal successors, (817), 361 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 817 transitions. [2022-03-15 15:33:45,700 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 817 transitions. Word has length 21 [2022-03-15 15:33:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:45,700 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 817 transitions. [2022-03-15 15:33:45,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 817 transitions. [2022-03-15 15:33:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:45,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:45,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:45,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:45,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-03-15 15:33:45,901 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:45,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2068366484, now seen corresponding path program 131 times [2022-03-15 15:33:45,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:45,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512769922] [2022-03-15 15:33:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:45,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:46,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:46,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512769922] [2022-03-15 15:33:46,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512769922] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:46,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773471192] [2022-03-15 15:33:46,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:33:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:46,082 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:46,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-03-15 15:33:46,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:33:46,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:46,104 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:46,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:46,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:47,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773471192] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:47,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:47,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:47,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518344991] [2022-03-15 15:33:47,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:47,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:47,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:47,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:47,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1907, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:47,040 INFO L87 Difference]: Start difference. First operand 362 states and 817 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:50,108 INFO L93 Difference]: Finished difference Result 803 states and 1621 transitions. [2022-03-15 15:33:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 15:33:50,108 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:50,109 INFO L225 Difference]: With dead ends: 803 [2022-03-15 15:33:50,109 INFO L226 Difference]: Without dead ends: 796 [2022-03-15 15:33:50,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4395 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2344, Invalid=12662, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 15:33:50,111 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 391 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:50,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 572 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:33:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-03-15 15:33:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 356. [2022-03-15 15:33:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.250704225352113) internal successors, (799), 355 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 799 transitions. [2022-03-15 15:33:50,121 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 799 transitions. Word has length 21 [2022-03-15 15:33:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:50,122 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 799 transitions. [2022-03-15 15:33:50,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 799 transitions. [2022-03-15 15:33:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:50,122 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:50,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:50,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:50,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-03-15 15:33:50,323 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2069560104, now seen corresponding path program 132 times [2022-03-15 15:33:50,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:50,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110993565] [2022-03-15 15:33:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:50,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:50,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110993565] [2022-03-15 15:33:50,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110993565] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:50,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789565800] [2022-03-15 15:33:50,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:33:50,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:50,513 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:50,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-03-15 15:33:50,531 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:33:50,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:33:50,532 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:50,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:50,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:51,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789565800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:51,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:51,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:33:51,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159331827] [2022-03-15 15:33:51,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:51,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:33:51,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:33:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:33:51,494 INFO L87 Difference]: Start difference. First operand 356 states and 799 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:33:57,339 INFO L93 Difference]: Finished difference Result 940 states and 1860 transitions. [2022-03-15 15:33:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-15 15:33:57,339 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:33:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:33:57,340 INFO L225 Difference]: With dead ends: 940 [2022-03-15 15:33:57,340 INFO L226 Difference]: Without dead ends: 934 [2022-03-15 15:33:57,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8850 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3774, Invalid=22632, Unknown=0, NotChecked=0, Total=26406 [2022-03-15 15:33:57,341 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 620 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:33:57,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 631 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:33:57,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-03-15 15:33:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 363. [2022-03-15 15:33:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.25414364640884) internal successors, (816), 362 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 816 transitions. [2022-03-15 15:33:57,347 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 816 transitions. Word has length 21 [2022-03-15 15:33:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:33:57,347 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 816 transitions. [2022-03-15 15:33:57,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:33:57,347 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 816 transitions. [2022-03-15 15:33:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:33:57,348 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:33:57,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:33:57,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2022-03-15 15:33:57,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-03-15 15:33:57,548 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:33:57,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:33:57,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2076882924, now seen corresponding path program 133 times [2022-03-15 15:33:57,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:33:57,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38104727] [2022-03-15 15:33:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:33:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:33:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:57,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:33:57,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38104727] [2022-03-15 15:33:57,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38104727] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:33:57,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43318301] [2022-03-15 15:33:57,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:33:57,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:33:57,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:33:57,728 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:33:57,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-03-15 15:33:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:33:57,748 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:33:57,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:33:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:58,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:33:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:33:58,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43318301] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:33:58,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:33:58,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:33:58,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509438322] [2022-03-15 15:33:58,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:33:58,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:33:58,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:33:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:33:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1934, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:33:58,694 INFO L87 Difference]: Start difference. First operand 363 states and 816 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:04,361 INFO L93 Difference]: Finished difference Result 1019 states and 2022 transitions. [2022-03-15 15:34:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-15 15:34:04,362 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:04,363 INFO L225 Difference]: With dead ends: 1019 [2022-03-15 15:34:04,363 INFO L226 Difference]: Without dead ends: 1005 [2022-03-15 15:34:04,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9753 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4148, Invalid=24244, Unknown=0, NotChecked=0, Total=28392 [2022-03-15 15:34:04,364 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 624 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:04,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 623 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:34:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-03-15 15:34:04,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 374. [2022-03-15 15:34:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.284182305630027) internal successors, (852), 373 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 852 transitions. [2022-03-15 15:34:04,370 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 852 transitions. Word has length 21 [2022-03-15 15:34:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:04,370 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 852 transitions. [2022-03-15 15:34:04,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 852 transitions. [2022-03-15 15:34:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:04,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:04,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:04,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-03-15 15:34:04,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-03-15 15:34:04,571 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash 34406420, now seen corresponding path program 134 times [2022-03-15 15:34:04,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:04,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27991773] [2022-03-15 15:34:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:04,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:04,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27991773] [2022-03-15 15:34:04,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27991773] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:04,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964214576] [2022-03-15 15:34:04,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:34:04,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:04,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:04,744 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:04,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-03-15 15:34:04,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:34:04,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:04,762 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:04,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:05,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:05,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964214576] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:05,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:05,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:34:05,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201746675] [2022-03-15 15:34:05,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:05,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:34:05,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:34:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:34:05,699 INFO L87 Difference]: Start difference. First operand 374 states and 852 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:12,697 INFO L93 Difference]: Finished difference Result 1055 states and 2079 transitions. [2022-03-15 15:34:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-03-15 15:34:12,697 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:12,698 INFO L225 Difference]: With dead ends: 1055 [2022-03-15 15:34:12,698 INFO L226 Difference]: Without dead ends: 1041 [2022-03-15 15:34:12,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12589 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4862, Invalid=30670, Unknown=0, NotChecked=0, Total=35532 [2022-03-15 15:34:12,700 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 594 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:12,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 816 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 15:34:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-03-15 15:34:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 372. [2022-03-15 15:34:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.274932614555256) internal successors, (844), 371 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 844 transitions. [2022-03-15 15:34:12,707 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 844 transitions. Word has length 21 [2022-03-15 15:34:12,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:12,707 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 844 transitions. [2022-03-15 15:34:12,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 844 transitions. [2022-03-15 15:34:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:12,708 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:12,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:12,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-03-15 15:34:12,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:12,908 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1555288044, now seen corresponding path program 135 times [2022-03-15 15:34:12,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:12,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450830872] [2022-03-15 15:34:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:12,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:13,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:13,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450830872] [2022-03-15 15:34:13,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450830872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:13,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17604112] [2022-03-15 15:34:13,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:34:13,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:13,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:13,089 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:13,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-03-15 15:34:13,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 15:34:13,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:13,108 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:13,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:13,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:14,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17604112] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:14,036 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:14,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:34:14,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504513208] [2022-03-15 15:34:14,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:14,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:34:14,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:34:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:34:14,037 INFO L87 Difference]: Start difference. First operand 372 states and 844 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:19,214 INFO L93 Difference]: Finished difference Result 923 states and 1819 transitions. [2022-03-15 15:34:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-15 15:34:19,214 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:19,215 INFO L225 Difference]: With dead ends: 923 [2022-03-15 15:34:19,215 INFO L226 Difference]: Without dead ends: 909 [2022-03-15 15:34:19,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8408 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3603, Invalid=21837, Unknown=0, NotChecked=0, Total=25440 [2022-03-15 15:34:19,217 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 531 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:19,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 792 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:34:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-03-15 15:34:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 369. [2022-03-15 15:34:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.2690217391304346) internal successors, (835), 368 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 835 transitions. [2022-03-15 15:34:19,222 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 835 transitions. Word has length 21 [2022-03-15 15:34:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:19,222 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 835 transitions. [2022-03-15 15:34:19,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 835 transitions. [2022-03-15 15:34:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:19,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:19,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:19,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-03-15 15:34:19,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:19,423 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1599395416, now seen corresponding path program 136 times [2022-03-15 15:34:19,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:19,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354956135] [2022-03-15 15:34:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:19,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:19,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:19,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354956135] [2022-03-15 15:34:19,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354956135] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:19,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415568911] [2022-03-15 15:34:19,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:34:19,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:19,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:19,598 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:19,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-03-15 15:34:19,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:34:19,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:19,615 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:19,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:20,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:20,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415568911] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:20,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:20,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:34:20,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809324498] [2022-03-15 15:34:20,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:20,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:34:20,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:34:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:34:20,519 INFO L87 Difference]: Start difference. First operand 369 states and 835 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:24,894 INFO L93 Difference]: Finished difference Result 921 states and 1815 transitions. [2022-03-15 15:34:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-15 15:34:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:24,895 INFO L225 Difference]: With dead ends: 921 [2022-03-15 15:34:24,895 INFO L226 Difference]: Without dead ends: 907 [2022-03-15 15:34:24,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6888 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3214, Invalid=18542, Unknown=0, NotChecked=0, Total=21756 [2022-03-15 15:34:24,896 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 558 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:24,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 675 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 15:34:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-03-15 15:34:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 369. [2022-03-15 15:34:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.2690217391304346) internal successors, (835), 368 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 835 transitions. [2022-03-15 15:34:24,902 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 835 transitions. Word has length 21 [2022-03-15 15:34:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:24,902 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 835 transitions. [2022-03-15 15:34:24,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 835 transitions. [2022-03-15 15:34:24,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:24,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:24,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:24,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2022-03-15 15:34:25,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:25,103 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:25,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1036787668, now seen corresponding path program 137 times [2022-03-15 15:34:25,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:25,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006575344] [2022-03-15 15:34:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:25,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:25,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:25,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006575344] [2022-03-15 15:34:25,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006575344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:25,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335313258] [2022-03-15 15:34:25,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:34:25,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:25,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:25,281 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:25,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-03-15 15:34:25,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 15:34:25,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:25,299 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:25,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:25,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:26,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335313258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:26,243 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:26,243 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:34:26,243 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390597797] [2022-03-15 15:34:26,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:26,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:34:26,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:34:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2018, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:34:26,244 INFO L87 Difference]: Start difference. First operand 369 states and 835 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:30,928 INFO L93 Difference]: Finished difference Result 868 states and 1735 transitions. [2022-03-15 15:34:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-15 15:34:30,929 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:30,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:30,930 INFO L225 Difference]: With dead ends: 868 [2022-03-15 15:34:30,930 INFO L226 Difference]: Without dead ends: 862 [2022-03-15 15:34:30,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6542 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2918, Invalid=17962, Unknown=0, NotChecked=0, Total=20880 [2022-03-15 15:34:30,931 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 506 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:30,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 682 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:34:30,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-03-15 15:34:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 371. [2022-03-15 15:34:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 2.2675675675675677) internal successors, (839), 370 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 839 transitions. [2022-03-15 15:34:30,937 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 839 transitions. Word has length 21 [2022-03-15 15:34:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:30,937 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 839 transitions. [2022-03-15 15:34:30,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 839 transitions. [2022-03-15 15:34:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:30,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:30,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:30,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2022-03-15 15:34:31,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:31,138 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:31,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:31,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1029464848, now seen corresponding path program 138 times [2022-03-15 15:34:31,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:31,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474649943] [2022-03-15 15:34:31,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:31,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:31,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:31,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474649943] [2022-03-15 15:34:31,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474649943] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:31,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119641230] [2022-03-15 15:34:31,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:34:31,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:31,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:31,321 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:31,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-03-15 15:34:31,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 15:34:31,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:31,340 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:31,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:31,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:32,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119641230] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:32,266 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:32,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:34:32,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171818989] [2022-03-15 15:34:32,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:32,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:34:32,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:32,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:34:32,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1925, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:34:32,267 INFO L87 Difference]: Start difference. First operand 371 states and 839 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:36,169 INFO L93 Difference]: Finished difference Result 912 states and 1832 transitions. [2022-03-15 15:34:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 15:34:36,169 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:36,171 INFO L225 Difference]: With dead ends: 912 [2022-03-15 15:34:36,171 INFO L226 Difference]: Without dead ends: 898 [2022-03-15 15:34:36,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5989 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2773, Invalid=16409, Unknown=0, NotChecked=0, Total=19182 [2022-03-15 15:34:36,172 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 510 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:36,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 627 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:34:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-03-15 15:34:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 377. [2022-03-15 15:34:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.279255319148936) internal successors, (857), 376 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 857 transitions. [2022-03-15 15:34:36,184 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 857 transitions. Word has length 21 [2022-03-15 15:34:36,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:36,184 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 857 transitions. [2022-03-15 15:34:36,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 857 transitions. [2022-03-15 15:34:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:36,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:36,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:36,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-03-15 15:34:36,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:36,385 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1154213104, now seen corresponding path program 139 times [2022-03-15 15:34:36,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:36,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866078120] [2022-03-15 15:34:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:36,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:36,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866078120] [2022-03-15 15:34:36,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866078120] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:36,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127369891] [2022-03-15 15:34:36,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 15:34:36,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:36,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:36,566 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:36,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-03-15 15:34:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:36,585 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:36,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:37,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:37,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127369891] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:37,511 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:37,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:34:37,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382246202] [2022-03-15 15:34:37,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:37,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:34:37,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:34:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:34:37,512 INFO L87 Difference]: Start difference. First operand 377 states and 857 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:41,976 INFO L93 Difference]: Finished difference Result 942 states and 1898 transitions. [2022-03-15 15:34:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-15 15:34:41,977 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:41,978 INFO L225 Difference]: With dead ends: 942 [2022-03-15 15:34:41,978 INFO L226 Difference]: Without dead ends: 928 [2022-03-15 15:34:41,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7784 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3393, Invalid=20477, Unknown=0, NotChecked=0, Total=23870 [2022-03-15 15:34:41,979 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 566 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:41,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 543 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:34:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-03-15 15:34:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 375. [2022-03-15 15:34:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 2.264705882352941) internal successors, (847), 374 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 847 transitions. [2022-03-15 15:34:41,985 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 847 transitions. Word has length 21 [2022-03-15 15:34:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:41,985 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 847 transitions. [2022-03-15 15:34:41,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 847 transitions. [2022-03-15 15:34:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:41,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:41,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:42,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2022-03-15 15:34:42,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:42,186 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash 118837478, now seen corresponding path program 140 times [2022-03-15 15:34:42,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:42,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365210657] [2022-03-15 15:34:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:42,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:42,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365210657] [2022-03-15 15:34:42,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365210657] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:42,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105611365] [2022-03-15 15:34:42,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 15:34:42,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:42,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:42,370 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:42,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-03-15 15:34:42,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:34:42,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:42,388 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:42,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:42,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:43,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105611365] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:43,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:43,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:34:43,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377557007] [2022-03-15 15:34:43,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:43,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:34:43,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:34:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2021, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:34:43,338 INFO L87 Difference]: Start difference. First operand 375 states and 847 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:48,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:48,550 INFO L93 Difference]: Finished difference Result 882 states and 1776 transitions. [2022-03-15 15:34:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-15 15:34:48,551 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:48,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:48,552 INFO L225 Difference]: With dead ends: 882 [2022-03-15 15:34:48,552 INFO L226 Difference]: Without dead ends: 876 [2022-03-15 15:34:48,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8401 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3444, Invalid=22316, Unknown=0, NotChecked=0, Total=25760 [2022-03-15 15:34:48,553 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 461 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:48,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 561 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:34:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-03-15 15:34:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 379. [2022-03-15 15:34:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 2.267195767195767) internal successors, (857), 378 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 857 transitions. [2022-03-15 15:34:48,559 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 857 transitions. Word has length 21 [2022-03-15 15:34:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:48,559 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 857 transitions. [2022-03-15 15:34:48,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 857 transitions. [2022-03-15 15:34:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:48,559 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:48,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:48,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-03-15 15:34:48,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2022-03-15 15:34:48,760 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash 111514658, now seen corresponding path program 141 times [2022-03-15 15:34:48,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:48,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774328453] [2022-03-15 15:34:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:48,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:48,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774328453] [2022-03-15 15:34:48,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774328453] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:48,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849606436] [2022-03-15 15:34:48,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 15:34:48,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:48,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:48,942 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:48,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-03-15 15:34:48,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 15:34:48,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:48,960 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:48,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:49,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:49,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849606436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:49,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:49,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:34:49,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43296377] [2022-03-15 15:34:49,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:49,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:34:49,881 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:34:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:34:49,882 INFO L87 Difference]: Start difference. First operand 379 states and 857 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:34:54,424 INFO L93 Difference]: Finished difference Result 942 states and 1896 transitions. [2022-03-15 15:34:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-03-15 15:34:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:34:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:34:54,426 INFO L225 Difference]: With dead ends: 942 [2022-03-15 15:34:54,426 INFO L226 Difference]: Without dead ends: 928 [2022-03-15 15:34:54,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7583 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3271, Invalid=19985, Unknown=0, NotChecked=0, Total=23256 [2022-03-15 15:34:54,427 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 540 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 15:34:54,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 678 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 15:34:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-03-15 15:34:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 381. [2022-03-15 15:34:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 2.281578947368421) internal successors, (867), 380 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 867 transitions. [2022-03-15 15:34:54,438 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 867 transitions. Word has length 21 [2022-03-15 15:34:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:34:54,438 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 867 transitions. [2022-03-15 15:34:54,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:34:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 867 transitions. [2022-03-15 15:34:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:34:54,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:34:54,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:34:54,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-03-15 15:34:54,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2022-03-15 15:34:54,639 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:34:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:34:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2072163294, now seen corresponding path program 142 times [2022-03-15 15:34:54,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:34:54,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250910893] [2022-03-15 15:34:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:34:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:34:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:34:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:54,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:34:54,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250910893] [2022-03-15 15:34:54,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250910893] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:34:54,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924781867] [2022-03-15 15:34:54,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 15:34:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:34:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:34:54,818 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:34:54,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-03-15 15:34:54,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 15:34:54,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:34:54,835 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:34:54,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:34:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:55,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:34:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:34:55,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924781867] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:34:55,754 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:34:55,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 15:34:55,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660994303] [2022-03-15 15:34:55,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:34:55,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 15:34:55,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:34:55,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 15:34:55,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 15:34:55,754 INFO L87 Difference]: Start difference. First operand 381 states and 867 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:35:00,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:35:00,115 INFO L93 Difference]: Finished difference Result 923 states and 1855 transitions. [2022-03-15 15:35:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-15 15:35:00,116 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:35:00,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:35:00,117 INFO L225 Difference]: With dead ends: 923 [2022-03-15 15:35:00,117 INFO L226 Difference]: Without dead ends: 909 [2022-03-15 15:35:00,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7322 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3341, Invalid=19309, Unknown=0, NotChecked=0, Total=22650 [2022-03-15 15:35:00,118 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 435 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 15:35:00,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 699 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 15:35:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-03-15 15:35:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 371. [2022-03-15 15:35:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 2.2675675675675677) internal successors, (839), 370 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:35:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 839 transitions. [2022-03-15 15:35:00,123 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 839 transitions. Word has length 21 [2022-03-15 15:35:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:35:00,124 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 839 transitions. [2022-03-15 15:35:00,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:35:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 839 transitions. [2022-03-15 15:35:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:35:00,124 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:35:00,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:35:00,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2022-03-15 15:35:00,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-03-15 15:35:00,343 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:35:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:35:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash -679777588, now seen corresponding path program 143 times [2022-03-15 15:35:00,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:35:00,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919769898] [2022-03-15 15:35:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:35:00,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:35:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:35:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:35:00,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:35:00,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919769898] [2022-03-15 15:35:00,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919769898] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:35:00,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440828614] [2022-03-15 15:35:00,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 15:35:00,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:35:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:35:00,527 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:35:00,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-03-15 15:35:00,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 15:35:00,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:35:00,545 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:35:00,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:35:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:35:00,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:35:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:35:01,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440828614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:35:01,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:35:01,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:35:01,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014324960] [2022-03-15 15:35:01,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:35:01,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:35:01,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:35:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:35:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:35:01,438 INFO L87 Difference]: Start difference. First operand 371 states and 839 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:35:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 15:35:03,320 INFO L93 Difference]: Finished difference Result 635 states and 1297 transitions. [2022-03-15 15:35:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 15:35:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 15:35:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 15:35:03,332 INFO L225 Difference]: With dead ends: 635 [2022-03-15 15:35:03,332 INFO L226 Difference]: Without dead ends: 632 [2022-03-15 15:35:03,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=952, Invalid=7604, Unknown=0, NotChecked=0, Total=8556 [2022-03-15 15:35:03,333 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 230 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 15:35:03,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 775 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 15:35:03,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-03-15 15:35:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 371. [2022-03-15 15:35:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 2.2675675675675677) internal successors, (839), 370 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:35:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 839 transitions. [2022-03-15 15:35:03,338 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 839 transitions. Word has length 21 [2022-03-15 15:35:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 15:35:03,338 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 839 transitions. [2022-03-15 15:35:03,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 15:35:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 839 transitions. [2022-03-15 15:35:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 15:35:03,339 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 15:35:03,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 15:35:03,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2022-03-15 15:35:03,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:35:03,555 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 15:35:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 15:35:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash 463132024, now seen corresponding path program 144 times [2022-03-15 15:35:03,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 15:35:03,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218329548] [2022-03-15 15:35:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 15:35:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 15:35:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 15:35:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:35:03,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 15:35:03,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218329548] [2022-03-15 15:35:03,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218329548] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 15:35:03,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384330440] [2022-03-15 15:35:03,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 15:35:03,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:35:03,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 15:35:03,728 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 15:35:03,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-03-15 15:35:03,745 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 15:35:03,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 15:35:03,745 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 15:35:03,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 15:35:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:35:04,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 15:35:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 15:35:04,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384330440] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 15:35:04,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 15:35:04,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-15 15:35:04,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123380629] [2022-03-15 15:35:04,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 15:35:04,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 15:35:04,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 15:35:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 15:35:04,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 15:35:04,657 INFO L87 Difference]: Start difference. First operand 371 states and 839 transitions. Second operand has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 15:35:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 15:35:05,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=527, Invalid=4165, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 15:35:05,479 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 15:35:05,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 310 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 15:35:05,480 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-15 15:35:05,480 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 15:35:05,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2022-03-15 15:35:05,512 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 15:35:05,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 15:35:05,681 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (371states) and FLOYD_HOARE automaton (currently 25 states, 48 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 69 known predicates. [2022-03-15 15:35:05,682 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 15:35:05,682 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 15:35:05,684 INFO L732 BasicCegarLoop]: Path program histogram: [144, 17, 17, 3] [2022-03-15 15:35:05,685 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 15:35:05,685 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 15:35:05,687 INFO L202 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 03:35:05 BasicIcfg [2022-03-15 15:35:05,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 15:35:05,687 INFO L158 Benchmark]: Toolchain (without parser) took 751940.80ms. Allocated memory was 204.5MB in the beginning and 303.0MB in the end (delta: 98.6MB). Free memory was 161.9MB in the beginning and 261.0MB in the end (delta: -99.1MB). Peak memory consumption was 983.2kB. Max. memory is 8.0GB. [2022-03-15 15:35:05,687 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 204.5MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 15:35:05,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.11ms. Allocated memory is still 204.5MB. Free memory was 161.9MB in the beginning and 160.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 15:35:05,687 INFO L158 Benchmark]: Boogie Preprocessor took 9.82ms. Allocated memory is still 204.5MB. Free memory was 160.3MB in the beginning and 159.4MB in the end (delta: 890.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 15:35:05,687 INFO L158 Benchmark]: RCFGBuilder took 150.33ms. Allocated memory is still 204.5MB. Free memory was 159.3MB in the beginning and 151.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-15 15:35:05,687 INFO L158 Benchmark]: TraceAbstraction took 751760.27ms. Allocated memory was 204.5MB in the beginning and 303.0MB in the end (delta: 98.6MB). Free memory was 150.6MB in the beginning and 261.0MB in the end (delta: -110.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 15:35:05,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09ms. Allocated memory is still 204.5MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.11ms. Allocated memory is still 204.5MB. Free memory was 161.9MB in the beginning and 160.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.82ms. Allocated memory is still 204.5MB. Free memory was 160.3MB in the beginning and 159.4MB in the end (delta: 890.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 150.33ms. Allocated memory is still 204.5MB. Free memory was 159.3MB in the beginning and 151.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 751760.27ms. Allocated memory was 204.5MB in the beginning and 303.0MB in the end (delta: 98.6MB). Free memory was 150.6MB in the beginning and 261.0MB in the end (delta: -110.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (371states) and FLOYD_HOARE automaton (currently 25 states, 48 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 69 known predicates. - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (371states) and FLOYD_HOARE automaton (currently 25 states, 48 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 69 known predicates. - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (371states) and FLOYD_HOARE automaton (currently 25 states, 48 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 69 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 751.7s, OverallIterations: 181, TraceHistogramMax: 2, PathProgramHistogramMax: 144, EmptinessCheckTime: 0.1s, AutomataDifference: 534.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67495 SdHoareTripleChecker+Valid, 110.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67495 mSDsluCounter, 116024 SdHoareTripleChecker+Invalid, 93.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 108629 mSDsCounter, 15980 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 293733 IncrementalHoareTripleChecker+Invalid, 309713 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15980 mSolverCounterUnsat, 8278 mSDtfsCounter, 293733 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21818 GetRequests, 2021 SyntacticMatches, 358 SemanticMatches, 19438 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726461 ImplicationChecksByTransitivity, 533.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=381occurred in iteration=178, InterpolantAutomatonStates: 12785, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 180 MinimizatonAttempts, 59210 StatesRemovedByMinimization, 180 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 174.9s InterpolantComputationTime, 7329 NumberOfCodeBlocks, 7329 NumberOfCodeBlocksAsserted, 498 NumberOfCheckSat, 10434 ConstructedInterpolants, 0 QuantifiedInterpolants, 145972 SizeOfPredicates, 1932 NumberOfNonLiveVariables, 8918 ConjunctsInSsa, 5046 ConjunctsInUnsatCore, 537 InterpolantComputations, 3 PerfectInterpolantSequences, 0/990 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown