/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-4b0ab11 [2022-03-01 17:04:27,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:04:27,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:04:27,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:04:27,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 17:04:27,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 17:04:27,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 17:04:27,711 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 [2022-03-01 17:04:27,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:04:27,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:04:27,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:04:27,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:04:27,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:04:27,743 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:04:27,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:04:27,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:04:27,743 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:04:27,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:04:27,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:04:27,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:04:27,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:04:27,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:04:27,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:04:27,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:04:27,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:04:27,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:04:27,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:04:27,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:04:27,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:04:27,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:04:27,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:04:27,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:04:27,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:04:27,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:04:27,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:04:28,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:04:28,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:04:28,006 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:04:28,007 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:04:28,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl [2022-03-01 17:04:28,008 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl' [2022-03-01 17:04:28,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:04:28,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:04:28,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:04:28,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:04:28,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:04:28,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,051 INFO L137 Inliner]: procedures = 2, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:04:28,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:04:28,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:04:28,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:04:28,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:04:28,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:04:28,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:04:28,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:04:28,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:04:28,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/1) ... [2022-03-01 17:04:28,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:04:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:28,113 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) [2022-03-01 17:04:28,133 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 [2022-03-01 17:04:28,149 INFO L124 BoogieDeclarations]: Specification and implementation of procedure mult given in one single declaration [2022-03-01 17:04:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-03-01 17:04:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-03-01 17:04:28,149 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:04:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:04:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:04:28,150 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:04:28,192 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:04:28,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:04:28,272 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:04:28,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:04:28,279 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 17:04:28,280 INFO L202 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:04:28 BoogieIcfgContainer [2022-03-01 17:04:28,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:04:28,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:04:28,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:04:28,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:04:28,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:04:28" (1/2) ... [2022-03-01 17:04:28,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2616493f and model type concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:04:28, skipping insertion in model container [2022-03-01 17:04:28,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:04:28" (2/2) ... [2022-03-01 17:04:28,289 INFO L111 eAbstractionObserver]: Analyzing ICFG concurrent_mult.bpl [2022-03-01 17:04:28,301 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:04:28,301 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:04:28,301 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:04:28,301 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:04:28,334 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,334 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,335 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,339 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,340 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,340 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,340 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,340 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,341 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,341 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,341 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,341 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,341 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,342 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,342 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,342 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,342 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,342 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,343 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,343 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,343 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,343 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,343 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,344 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,344 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,344 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,344 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,344 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,345 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,345 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,345 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,345 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,345 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,346 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,346 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,346 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,346 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,346 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,346 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,347 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,347 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,347 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,347 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,347 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,351 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,351 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,354 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,354 WARN L322 ript$VariableManager]: TermVariabe multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:04:28,360 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 17:04:28,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:04:28,410 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 [2022-03-01 17:04:28,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 17:04:28,420 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2022-03-01 17:04:28,454 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) [2022-03-01 17:04:28,458 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) [2022-03-01 17:04:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-01 17:04:28,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:28,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:28,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1077425939, now seen corresponding path program 1 times [2022-03-01 17:04:28,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:28,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729863396] [2022-03-01 17:04:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:28,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:28,776 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:28,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729863396] [2022-03-01 17:04:28,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729863396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:04:28,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:04:28,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 17:04:28,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757300870] [2022-03-01 17:04:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:04:28,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:04:28,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:04:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:04:28,807 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) [2022-03-01 17:04:28,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:28,986 INFO L93 Difference]: Finished difference Result 115 states and 217 transitions. [2022-03-01 17:04:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:04:28,989 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 [2022-03-01 17:04:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:28,998 INFO L225 Difference]: With dead ends: 115 [2022-03-01 17:04:28,998 INFO L226 Difference]: Without dead ends: 112 [2022-03-01 17:04:29,000 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 [2022-03-01 17:04:29,003 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:29,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 115 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:04:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-03-01 17:04:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 77. [2022-03-01 17:04:29,089 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) [2022-03-01 17:04:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 147 transitions. [2022-03-01 17:04:29,093 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 147 transitions. Word has length 15 [2022-03-01 17:04:29,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:29,093 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 147 transitions. [2022-03-01 17:04:29,093 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) [2022-03-01 17:04:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 147 transitions. [2022-03-01 17:04:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-01 17:04:29,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:29,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:29,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:04:29,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash 219740701, now seen corresponding path program 2 times [2022-03-01 17:04:29,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:29,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107598085] [2022-03-01 17:04:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:29,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:29,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107598085] [2022-03-01 17:04:29,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107598085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:04:29,194 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:04:29,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 17:04:29,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387746958] [2022-03-01 17:04:29,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:04:29,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:04:29,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:04:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:04:29,197 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) [2022-03-01 17:04:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:29,308 INFO L93 Difference]: Finished difference Result 143 states and 275 transitions. [2022-03-01 17:04:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:04:29,309 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 [2022-03-01 17:04:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:29,310 INFO L225 Difference]: With dead ends: 143 [2022-03-01 17:04:29,310 INFO L226 Difference]: Without dead ends: 136 [2022-03-01 17:04:29,311 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 [2022-03-01 17:04:29,312 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 [2022-03-01 17:04:29,312 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] [2022-03-01 17:04:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-03-01 17:04:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 89. [2022-03-01 17:04:29,321 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) [2022-03-01 17:04:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 173 transitions. [2022-03-01 17:04:29,322 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 173 transitions. Word has length 15 [2022-03-01 17:04:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:29,323 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 173 transitions. [2022-03-01 17:04:29,324 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) [2022-03-01 17:04:29,325 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 173 transitions. [2022-03-01 17:04:29,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-01 17:04:29,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:29,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:29,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:04:29,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1754585729, now seen corresponding path program 3 times [2022-03-01 17:04:29,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:29,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909478513] [2022-03-01 17:04:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:29,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:29,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:29,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909478513] [2022-03-01 17:04:29,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909478513] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:04:29,417 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:04:29,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 17:04:29,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329540054] [2022-03-01 17:04:29,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:04:29,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 17:04:29,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 17:04:29,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-01 17:04:29,420 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) [2022-03-01 17:04:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:29,530 INFO L93 Difference]: Finished difference Result 150 states and 292 transitions. [2022-03-01 17:04:29,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 17:04:29,530 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 [2022-03-01 17:04:29,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:29,532 INFO L225 Difference]: With dead ends: 150 [2022-03-01 17:04:29,532 INFO L226 Difference]: Without dead ends: 143 [2022-03-01 17:04:29,532 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 [2022-03-01 17:04:29,533 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:29,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 130 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 17:04:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-03-01 17:04:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 91. [2022-03-01 17:04:29,548 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) [2022-03-01 17:04:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 177 transitions. [2022-03-01 17:04:29,548 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 177 transitions. Word has length 15 [2022-03-01 17:04:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:29,549 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 177 transitions. [2022-03-01 17:04:29,549 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) [2022-03-01 17:04:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 177 transitions. [2022-03-01 17:04:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:29,550 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:29,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:29,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 17:04:29,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1395400251, now seen corresponding path program 1 times [2022-03-01 17:04:29,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:29,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860417163] [2022-03-01 17:04:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:29,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:29,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860417163] [2022-03-01 17:04:29,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860417163] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:29,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529603405] [2022-03-01 17:04:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:29,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:29,735 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) [2022-03-01 17:04:29,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 17:04:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:29,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:29,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:30,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:30,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529603405] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:30,449 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:30,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-01 17:04:30,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123062951] [2022-03-01 17:04:30,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:30,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 17:04:30,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:30,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 17:04:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:04:30,452 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) [2022-03-01 17:04:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:31,964 INFO L93 Difference]: Finished difference Result 285 states and 534 transitions. [2022-03-01 17:04:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 17:04:31,964 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 [2022-03-01 17:04:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:31,966 INFO L225 Difference]: With dead ends: 285 [2022-03-01 17:04:31,966 INFO L226 Difference]: Without dead ends: 279 [2022-03-01 17:04:31,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=728, Invalid=2352, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 17:04:31,969 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:31,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 424 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:04:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-03-01 17:04:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 98. [2022-03-01 17:04:31,979 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) [2022-03-01 17:04:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 193 transitions. [2022-03-01 17:04:31,980 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 193 transitions. Word has length 18 [2022-03-01 17:04:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:31,980 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 193 transitions. [2022-03-01 17:04:31,981 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) [2022-03-01 17:04:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 193 transitions. [2022-03-01 17:04:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:31,982 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:31,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:32,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 17:04:32,191 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 [2022-03-01 17:04:32,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:32,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash 537715013, now seen corresponding path program 2 times [2022-03-01 17:04:32,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:32,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064428863] [2022-03-01 17:04:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:32,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:32,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064428863] [2022-03-01 17:04:32,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064428863] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:32,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754844057] [2022-03-01 17:04:32,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:04:32,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:32,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:32,348 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) [2022-03-01 17:04:32,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 17:04:32,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:04:32,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:32,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:32,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:32,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:32,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754844057] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:32,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:32,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-01 17:04:32,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803168164] [2022-03-01 17:04:32,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:32,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 17:04:32,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 17:04:32,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:04:32,993 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) [2022-03-01 17:04:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:34,395 INFO L93 Difference]: Finished difference Result 380 states and 710 transitions. [2022-03-01 17:04:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-01 17:04:34,396 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 [2022-03-01 17:04:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:34,398 INFO L225 Difference]: With dead ends: 380 [2022-03-01 17:04:34,398 INFO L226 Difference]: Without dead ends: 374 [2022-03-01 17:04:34,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=791, Invalid=2515, Unknown=0, NotChecked=0, Total=3306 [2022-03-01 17:04:34,400 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:34,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 506 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:04:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-03-01 17:04:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 105. [2022-03-01 17:04:34,424 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) [2022-03-01 17:04:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 209 transitions. [2022-03-01 17:04:34,425 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 209 transitions. Word has length 18 [2022-03-01 17:04:34,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:34,425 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 209 transitions. [2022-03-01 17:04:34,425 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) [2022-03-01 17:04:34,425 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 209 transitions. [2022-03-01 17:04:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:34,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:34,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:34,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:34,644 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 [2022-03-01 17:04:34,645 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:34,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash 260658713, now seen corresponding path program 3 times [2022-03-01 17:04:34,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:34,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231881141] [2022-03-01 17:04:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:34,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:34,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:34,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231881141] [2022-03-01 17:04:34,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231881141] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:34,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483855967] [2022-03-01 17:04:34,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:04:34,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:34,775 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) [2022-03-01 17:04:34,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 17:04:34,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:04:34,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:34,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:34,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:35,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:35,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483855967] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:35,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:35,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-01 17:04:35,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977148808] [2022-03-01 17:04:35,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:35,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 17:04:35,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:35,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 17:04:35,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:04:35,297 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) [2022-03-01 17:04:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:36,706 INFO L93 Difference]: Finished difference Result 419 states and 801 transitions. [2022-03-01 17:04:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-01 17:04:36,707 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 [2022-03-01 17:04:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:36,709 INFO L225 Difference]: With dead ends: 419 [2022-03-01 17:04:36,709 INFO L226 Difference]: Without dead ends: 409 [2022-03-01 17:04:36,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=806, Invalid=2616, Unknown=0, NotChecked=0, Total=3422 [2022-03-01 17:04:36,711 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:36,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 502 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 17:04:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-01 17:04:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 126. [2022-03-01 17:04:36,721 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) [2022-03-01 17:04:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 265 transitions. [2022-03-01 17:04:36,721 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 265 transitions. Word has length 18 [2022-03-01 17:04:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:36,722 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 265 transitions. [2022-03-01 17:04:36,722 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) [2022-03-01 17:04:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 265 transitions. [2022-03-01 17:04:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:36,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:36,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:36,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:36,942 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 [2022-03-01 17:04:36,942 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash -119562027, now seen corresponding path program 4 times [2022-03-01 17:04:36,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:36,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933247872] [2022-03-01 17:04:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:36,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:37,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:37,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933247872] [2022-03-01 17:04:37,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933247872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:37,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788949619] [2022-03-01 17:04:37,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:04:37,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:37,082 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) [2022-03-01 17:04:37,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 17:04:37,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:04:37,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:37,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:37,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:37,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:37,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788949619] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:37,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:37,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-01 17:04:37,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710639393] [2022-03-01 17:04:37,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:37,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 17:04:37,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:37,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 17:04:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:04:37,583 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) [2022-03-01 17:04:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:38,385 INFO L93 Difference]: Finished difference Result 361 states and 697 transitions. [2022-03-01 17:04:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 17:04:38,385 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 [2022-03-01 17:04:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:38,387 INFO L225 Difference]: With dead ends: 361 [2022-03-01 17:04:38,387 INFO L226 Difference]: Without dead ends: 337 [2022-03-01 17:04:38,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=600, Invalid=1950, Unknown=0, NotChecked=0, Total=2550 [2022-03-01 17:04:38,388 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 236 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-01 17:04:38,390 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] [2022-03-01 17:04:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-03-01 17:04:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 145. [2022-03-01 17:04:38,398 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) [2022-03-01 17:04:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 303 transitions. [2022-03-01 17:04:38,399 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 303 transitions. Word has length 18 [2022-03-01 17:04:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:38,399 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 303 transitions. [2022-03-01 17:04:38,399 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) [2022-03-01 17:04:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 303 transitions. [2022-03-01 17:04:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:38,401 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:38,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:38,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:38,615 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 [2022-03-01 17:04:38,616 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 384485672, now seen corresponding path program 1 times [2022-03-01 17:04:38,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:38,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950722927] [2022-03-01 17:04:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:38,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:38,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950722927] [2022-03-01 17:04:38,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950722927] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:38,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846155784] [2022-03-01 17:04:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:38,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:38,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:38,743 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) [2022-03-01 17:04:38,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 17:04:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:38,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:38,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:39,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:39,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846155784] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:39,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:39,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-01 17:04:39,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027596849] [2022-03-01 17:04:39,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:39,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:04:39,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:04:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:04:39,163 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) [2022-03-01 17:04:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:39,409 INFO L93 Difference]: Finished difference Result 294 states and 580 transitions. [2022-03-01 17:04:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:04:39,410 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 [2022-03-01 17:04:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:39,411 INFO L225 Difference]: With dead ends: 294 [2022-03-01 17:04:39,411 INFO L226 Difference]: Without dead ends: 285 [2022-03-01 17:04:39,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 17:04:39,413 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 [2022-03-01 17:04:39,413 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] [2022-03-01 17:04:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-03-01 17:04:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 148. [2022-03-01 17:04:39,418 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) [2022-03-01 17:04:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 309 transitions. [2022-03-01 17:04:39,419 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 309 transitions. Word has length 18 [2022-03-01 17:04:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:39,420 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 309 transitions. [2022-03-01 17:04:39,420 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) [2022-03-01 17:04:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 309 transitions. [2022-03-01 17:04:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:39,421 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:39,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:39,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:39,635 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 [2022-03-01 17:04:39,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash -155995682, now seen corresponding path program 2 times [2022-03-01 17:04:39,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:39,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191464725] [2022-03-01 17:04:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:39,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:39,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191464725] [2022-03-01 17:04:39,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191464725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:39,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428107569] [2022-03-01 17:04:39,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:04:39,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:39,760 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) [2022-03-01 17:04:39,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 17:04:39,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:04:39,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:39,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:39,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:40,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:40,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428107569] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:40,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:40,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-01 17:04:40,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139819125] [2022-03-01 17:04:40,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:40,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:04:40,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:04:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:04:40,187 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) [2022-03-01 17:04:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:40,437 INFO L93 Difference]: Finished difference Result 307 states and 606 transitions. [2022-03-01 17:04:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:04:40,438 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 [2022-03-01 17:04:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:40,439 INFO L225 Difference]: With dead ends: 307 [2022-03-01 17:04:40,439 INFO L226 Difference]: Without dead ends: 283 [2022-03-01 17:04:40,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 17:04:40,440 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 [2022-03-01 17:04:40,441 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] [2022-03-01 17:04:40,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-03-01 17:04:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 146. [2022-03-01 17:04:40,446 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) [2022-03-01 17:04:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 305 transitions. [2022-03-01 17:04:40,447 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 305 transitions. Word has length 18 [2022-03-01 17:04:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:40,447 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 305 transitions. [2022-03-01 17:04:40,447 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) [2022-03-01 17:04:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 305 transitions. [2022-03-01 17:04:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:40,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:40,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:40,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:40,672 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 [2022-03-01 17:04:40,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash 52297626, now seen corresponding path program 3 times [2022-03-01 17:04:40,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:40,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429868744] [2022-03-01 17:04:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:40,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:40,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:40,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429868744] [2022-03-01 17:04:40,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429868744] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:40,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130670058] [2022-03-01 17:04:40,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:04:40,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:40,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:40,808 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) [2022-03-01 17:04:40,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 17:04:40,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:04:40,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:40,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:40,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:41,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:41,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130670058] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:41,235 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:41,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 17:04:41,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551088624] [2022-03-01 17:04:41,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:41,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:04:41,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:04:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:04:41,237 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) [2022-03-01 17:04:41,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:41,577 INFO L93 Difference]: Finished difference Result 321 states and 642 transitions. [2022-03-01 17:04:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-01 17:04:41,577 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 [2022-03-01 17:04:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:41,579 INFO L225 Difference]: With dead ends: 321 [2022-03-01 17:04:41,579 INFO L226 Difference]: Without dead ends: 299 [2022-03-01 17:04:41,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 17:04:41,581 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 [2022-03-01 17:04:41,582 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] [2022-03-01 17:04:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-03-01 17:04:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 151. [2022-03-01 17:04:41,592 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) [2022-03-01 17:04:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 316 transitions. [2022-03-01 17:04:41,592 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 316 transitions. Word has length 18 [2022-03-01 17:04:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:41,593 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 316 transitions. [2022-03-01 17:04:41,593 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) [2022-03-01 17:04:41,593 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 316 transitions. [2022-03-01 17:04:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:41,594 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:41,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:41,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:41,815 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 [2022-03-01 17:04:41,815 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:41,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:41,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1812350566, now seen corresponding path program 4 times [2022-03-01 17:04:41,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:41,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770457052] [2022-03-01 17:04:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:41,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:41,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:41,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770457052] [2022-03-01 17:04:41,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770457052] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:41,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114479472] [2022-03-01 17:04:41,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:04:41,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:41,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:41,932 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) [2022-03-01 17:04:41,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 17:04:41,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:04:41,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:41,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:41,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:42,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:42,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114479472] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:42,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:42,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 17:04:42,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374251447] [2022-03-01 17:04:42,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:42,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:04:42,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:42,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:04:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:04:42,370 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) [2022-03-01 17:04:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:42,863 INFO L93 Difference]: Finished difference Result 336 states and 660 transitions. [2022-03-01 17:04:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 17:04:42,863 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 [2022-03-01 17:04:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:42,865 INFO L225 Difference]: With dead ends: 336 [2022-03-01 17:04:42,865 INFO L226 Difference]: Without dead ends: 307 [2022-03-01 17:04:42,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 17:04:42,866 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 [2022-03-01 17:04:42,866 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] [2022-03-01 17:04:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-03-01 17:04:42,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 173. [2022-03-01 17:04:42,874 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) [2022-03-01 17:04:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 364 transitions. [2022-03-01 17:04:42,875 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 364 transitions. Word has length 18 [2022-03-01 17:04:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:42,876 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 364 transitions. [2022-03-01 17:04:42,876 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) [2022-03-01 17:04:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 364 transitions. [2022-03-01 17:04:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:42,876 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:42,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:42,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-01 17:04:43,099 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 [2022-03-01 17:04:43,100 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash -674341312, now seen corresponding path program 5 times [2022-03-01 17:04:43,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:43,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463030545] [2022-03-01 17:04:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:43,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:43,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:43,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463030545] [2022-03-01 17:04:43,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463030545] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:43,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746443265] [2022-03-01 17:04:43,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:04:43,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:43,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:43,222 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) [2022-03-01 17:04:43,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 17:04:43,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:04:43,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:43,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:43,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:43,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:43,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746443265] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:43,666 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:43,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-03-01 17:04:43,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829049483] [2022-03-01 17:04:43,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:43,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 17:04:43,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:43,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 17:04:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:04:43,667 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) [2022-03-01 17:04:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:44,504 INFO L93 Difference]: Finished difference Result 418 states and 823 transitions. [2022-03-01 17:04:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-01 17:04:44,505 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 [2022-03-01 17:04:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:44,507 INFO L225 Difference]: With dead ends: 418 [2022-03-01 17:04:44,507 INFO L226 Difference]: Without dead ends: 404 [2022-03-01 17:04:44,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=596, Invalid=1756, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 17:04:44,508 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 285 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-01 17:04:44,508 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] [2022-03-01 17:04:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-01 17:04:44,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 176. [2022-03-01 17:04:44,514 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) [2022-03-01 17:04:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 371 transitions. [2022-03-01 17:04:44,518 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 371 transitions. Word has length 18 [2022-03-01 17:04:44,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:44,520 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 371 transitions. [2022-03-01 17:04:44,520 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) [2022-03-01 17:04:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 371 transitions. [2022-03-01 17:04:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:44,520 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:44,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:44,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-01 17:04:44,736 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 [2022-03-01 17:04:44,736 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash -515991736, now seen corresponding path program 6 times [2022-03-01 17:04:44,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:44,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590870839] [2022-03-01 17:04:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:44,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:44,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590870839] [2022-03-01 17:04:44,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590870839] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:44,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359721888] [2022-03-01 17:04:44,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:04:44,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:44,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:44,852 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) [2022-03-01 17:04:44,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 17:04:44,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:04:44,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:44,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:44,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:45,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:45,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359721888] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:45,254 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:45,254 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-01 17:04:45,254 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466106798] [2022-03-01 17:04:45,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:45,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:04:45,254 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:04:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:04:45,255 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) [2022-03-01 17:04:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:45,504 INFO L93 Difference]: Finished difference Result 289 states and 568 transitions. [2022-03-01 17:04:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:04:45,505 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 [2022-03-01 17:04:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:45,506 INFO L225 Difference]: With dead ends: 289 [2022-03-01 17:04:45,506 INFO L226 Difference]: Without dead ends: 280 [2022-03-01 17:04:45,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-03-01 17:04:45,507 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 [2022-03-01 17:04:45,507 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] [2022-03-01 17:04:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-03-01 17:04:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 178. [2022-03-01 17:04:45,522 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) [2022-03-01 17:04:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 374 transitions. [2022-03-01 17:04:45,523 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 374 transitions. Word has length 18 [2022-03-01 17:04:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:45,523 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 374 transitions. [2022-03-01 17:04:45,523 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) [2022-03-01 17:04:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 374 transitions. [2022-03-01 17:04:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:45,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:45,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:45,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-01 17:04:45,749 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 [2022-03-01 17:04:45,750 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1056473090, now seen corresponding path program 7 times [2022-03-01 17:04:45,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:45,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181735857] [2022-03-01 17:04:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:45,875 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:45,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181735857] [2022-03-01 17:04:45,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181735857] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:45,875 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935617153] [2022-03-01 17:04:45,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:04:45,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:45,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:45,880 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) [2022-03-01 17:04:45,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 17:04:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:45,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:45,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:46,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:46,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935617153] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:46,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:46,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-01 17:04:46,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592803379] [2022-03-01 17:04:46,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:46,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:04:46,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:04:46,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:04:46,246 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) [2022-03-01 17:04:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:46,506 INFO L93 Difference]: Finished difference Result 302 states and 594 transitions. [2022-03-01 17:04:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:04:46,506 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 [2022-03-01 17:04:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:46,508 INFO L225 Difference]: With dead ends: 302 [2022-03-01 17:04:46,508 INFO L226 Difference]: Without dead ends: 278 [2022-03-01 17:04:46,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2022-03-01 17:04:46,509 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 [2022-03-01 17:04:46,510 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] [2022-03-01 17:04:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-01 17:04:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 176. [2022-03-01 17:04:46,515 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) [2022-03-01 17:04:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 370 transitions. [2022-03-01 17:04:46,515 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 370 transitions. Word has length 18 [2022-03-01 17:04:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:46,516 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 370 transitions. [2022-03-01 17:04:46,516 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) [2022-03-01 17:04:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 370 transitions. [2022-03-01 17:04:46,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:46,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:46,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:46,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:46,739 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 [2022-03-01 17:04:46,739 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:46,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash -848179782, now seen corresponding path program 8 times [2022-03-01 17:04:46,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:46,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169796241] [2022-03-01 17:04:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:46,842 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:46,842 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169796241] [2022-03-01 17:04:46,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169796241] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:46,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796186661] [2022-03-01 17:04:46,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:04:46,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:46,844 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) [2022-03-01 17:04:46,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 17:04:46,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:04:46,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:46,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:46,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:47,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:47,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796186661] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:47,271 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:47,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 17:04:47,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180166745] [2022-03-01 17:04:47,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:47,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:04:47,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:04:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:04:47,273 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) [2022-03-01 17:04:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:47,631 INFO L93 Difference]: Finished difference Result 292 states and 580 transitions. [2022-03-01 17:04:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-01 17:04:47,631 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 [2022-03-01 17:04:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:47,636 INFO L225 Difference]: With dead ends: 292 [2022-03-01 17:04:47,636 INFO L226 Difference]: Without dead ends: 270 [2022-03-01 17:04:47,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2022-03-01 17:04:47,639 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 [2022-03-01 17:04:47,639 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] [2022-03-01 17:04:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-01 17:04:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 173. [2022-03-01 17:04:47,644 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) [2022-03-01 17:04:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 362 transitions. [2022-03-01 17:04:47,645 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 362 transitions. Word has length 18 [2022-03-01 17:04:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:47,646 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 362 transitions. [2022-03-01 17:04:47,646 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) [2022-03-01 17:04:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 362 transitions. [2022-03-01 17:04:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:47,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:47,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:47,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:47,871 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 [2022-03-01 17:04:47,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:47,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2126537841, now seen corresponding path program 5 times [2022-03-01 17:04:47,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:47,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810061600] [2022-03-01 17:04:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:47,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:47,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:47,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810061600] [2022-03-01 17:04:47,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810061600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:47,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534580075] [2022-03-01 17:04:47,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:04:47,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:47,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:47,992 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) [2022-03-01 17:04:47,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 17:04:48,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:04:48,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:48,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:48,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:48,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534580075] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:48,369 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:48,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-01 17:04:48,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086590444] [2022-03-01 17:04:48,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:48,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 17:04:48,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 17:04:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:04:48,370 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) [2022-03-01 17:04:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:49,356 INFO L93 Difference]: Finished difference Result 521 states and 1015 transitions. [2022-03-01 17:04:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 17:04:49,356 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 [2022-03-01 17:04:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:49,358 INFO L225 Difference]: With dead ends: 521 [2022-03-01 17:04:49,358 INFO L226 Difference]: Without dead ends: 491 [2022-03-01 17:04:49,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=809, Invalid=2271, Unknown=0, NotChecked=0, Total=3080 [2022-03-01 17:04:49,360 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 [2022-03-01 17:04:49,360 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] [2022-03-01 17:04:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-03-01 17:04:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 188. [2022-03-01 17:04:49,366 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) [2022-03-01 17:04:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 403 transitions. [2022-03-01 17:04:49,367 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 403 transitions. Word has length 18 [2022-03-01 17:04:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:49,367 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 403 transitions. [2022-03-01 17:04:49,367 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) [2022-03-01 17:04:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 403 transitions. [2022-03-01 17:04:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:49,368 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:49,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:49,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:49,583 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 [2022-03-01 17:04:49,583 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1103841132, now seen corresponding path program 9 times [2022-03-01 17:04:49,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:49,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207251819] [2022-03-01 17:04:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:49,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:49,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:49,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207251819] [2022-03-01 17:04:49,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207251819] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:49,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973968601] [2022-03-01 17:04:49,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:04:49,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:49,707 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) [2022-03-01 17:04:49,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 17:04:49,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:04:49,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:49,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:49,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:49,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:50,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973968601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:50,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:50,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 17:04:50,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334480634] [2022-03-01 17:04:50,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:50,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 17:04:50,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 17:04:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-03-01 17:04:50,060 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) [2022-03-01 17:04:50,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:50,201 INFO L93 Difference]: Finished difference Result 265 states and 534 transitions. [2022-03-01 17:04:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:04:50,201 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 [2022-03-01 17:04:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:50,202 INFO L225 Difference]: With dead ends: 265 [2022-03-01 17:04:50,203 INFO L226 Difference]: Without dead ends: 256 [2022-03-01 17:04:50,203 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 [2022-03-01 17:04:50,203 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 [2022-03-01 17:04:50,204 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] [2022-03-01 17:04:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-01 17:04:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 192. [2022-03-01 17:04:50,207 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) [2022-03-01 17:04:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 409 transitions. [2022-03-01 17:04:50,208 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 409 transitions. Word has length 18 [2022-03-01 17:04:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:50,209 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 409 transitions. [2022-03-01 17:04:50,209 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) [2022-03-01 17:04:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 409 transitions. [2022-03-01 17:04:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:50,209 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:50,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:50,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:50,423 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 [2022-03-01 17:04:50,423 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 563359778, now seen corresponding path program 10 times [2022-03-01 17:04:50,424 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:50,424 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15970198] [2022-03-01 17:04:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:50,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:50,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:50,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15970198] [2022-03-01 17:04:50,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15970198] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:50,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987436684] [2022-03-01 17:04:50,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:04:50,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:50,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:50,523 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) [2022-03-01 17:04:50,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 17:04:50,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:04:50,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:50,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:50,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:50,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:50,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987436684] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:50,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:50,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 17:04:50,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013495612] [2022-03-01 17:04:50,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:50,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 17:04:50,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 17:04:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-03-01 17:04:50,901 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) [2022-03-01 17:04:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:51,055 INFO L93 Difference]: Finished difference Result 255 states and 523 transitions. [2022-03-01 17:04:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-01 17:04:51,055 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 [2022-03-01 17:04:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:51,056 INFO L225 Difference]: With dead ends: 255 [2022-03-01 17:04:51,056 INFO L226 Difference]: Without dead ends: 229 [2022-03-01 17:04:51,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2022-03-01 17:04:51,057 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 [2022-03-01 17:04:51,057 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] [2022-03-01 17:04:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-03-01 17:04:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 188. [2022-03-01 17:04:51,062 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) [2022-03-01 17:04:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 402 transitions. [2022-03-01 17:04:51,063 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 402 transitions. Word has length 18 [2022-03-01 17:04:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:51,063 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 402 transitions. [2022-03-01 17:04:51,063 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) [2022-03-01 17:04:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 402 transitions. [2022-03-01 17:04:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:51,063 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:51,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:51,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:51,279 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 [2022-03-01 17:04:51,279 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1258539261, now seen corresponding path program 6 times [2022-03-01 17:04:51,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:51,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456500390] [2022-03-01 17:04:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:51,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:51,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:51,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456500390] [2022-03-01 17:04:51,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456500390] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:51,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040380071] [2022-03-01 17:04:51,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:04:51,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:51,376 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) [2022-03-01 17:04:51,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 17:04:51,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:04:51,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:51,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:51,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:51,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:51,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040380071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:51,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:51,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-01 17:04:51,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020753991] [2022-03-01 17:04:51,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:51,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:04:51,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:04:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:04:51,769 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) [2022-03-01 17:04:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:52,648 INFO L93 Difference]: Finished difference Result 327 states and 651 transitions. [2022-03-01 17:04:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-01 17:04:52,649 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 [2022-03-01 17:04:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:52,650 INFO L225 Difference]: With dead ends: 327 [2022-03-01 17:04:52,650 INFO L226 Difference]: Without dead ends: 321 [2022-03-01 17:04:52,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=638, Invalid=1812, Unknown=0, NotChecked=0, Total=2450 [2022-03-01 17:04:52,651 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:52,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 422 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:04:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-01 17:04:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 187. [2022-03-01 17:04:52,656 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) [2022-03-01 17:04:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 401 transitions. [2022-03-01 17:04:52,656 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 401 transitions. Word has length 18 [2022-03-01 17:04:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:52,657 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 401 transitions. [2022-03-01 17:04:52,657 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) [2022-03-01 17:04:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 401 transitions. [2022-03-01 17:04:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:52,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:52,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:52,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:52,873 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 [2022-03-01 17:04:52,874 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:52,874 INFO L85 PathProgramCache]: Analyzing trace with hash 400854023, now seen corresponding path program 7 times [2022-03-01 17:04:52,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:52,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397223137] [2022-03-01 17:04:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:52,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:52,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397223137] [2022-03-01 17:04:52,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397223137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:52,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351964427] [2022-03-01 17:04:52,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:04:52,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:52,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:52,984 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) [2022-03-01 17:04:52,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 17:04:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:53,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:53,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:53,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:53,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351964427] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:53,357 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:53,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-01 17:04:53,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203207384] [2022-03-01 17:04:53,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:53,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 17:04:53,358 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 17:04:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:04:53,359 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) [2022-03-01 17:04:54,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:54,259 INFO L93 Difference]: Finished difference Result 423 states and 831 transitions. [2022-03-01 17:04:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 17:04:54,259 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 [2022-03-01 17:04:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:54,260 INFO L225 Difference]: With dead ends: 423 [2022-03-01 17:04:54,261 INFO L226 Difference]: Without dead ends: 417 [2022-03-01 17:04:54,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=698, Invalid=1954, Unknown=0, NotChecked=0, Total=2652 [2022-03-01 17:04:54,261 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:04:54,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 403 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:04:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-03-01 17:04:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 194. [2022-03-01 17:04:54,267 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) [2022-03-01 17:04:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 417 transitions. [2022-03-01 17:04:54,267 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 417 transitions. Word has length 18 [2022-03-01 17:04:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:54,268 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 417 transitions. [2022-03-01 17:04:54,268 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) [2022-03-01 17:04:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 417 transitions. [2022-03-01 17:04:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:54,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:54,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:54,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-01 17:04:54,471 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 [2022-03-01 17:04:54,472 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:54,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash 123797723, now seen corresponding path program 8 times [2022-03-01 17:04:54,472 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:54,472 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116522726] [2022-03-01 17:04:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:54,583 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:54,583 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116522726] [2022-03-01 17:04:54,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116522726] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:54,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336816908] [2022-03-01 17:04:54,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:04:54,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:54,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:54,588 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) [2022-03-01 17:04:54,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-01 17:04:54,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:04:54,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:54,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:54,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:54,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:55,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336816908] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:55,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:55,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-03-01 17:04:55,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638185281] [2022-03-01 17:04:55,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:55,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-01 17:04:55,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-01 17:04:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-03-01 17:04:55,032 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) [2022-03-01 17:04:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:56,284 INFO L93 Difference]: Finished difference Result 479 states and 945 transitions. [2022-03-01 17:04:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-01 17:04:56,285 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 [2022-03-01 17:04:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:56,286 INFO L225 Difference]: With dead ends: 479 [2022-03-01 17:04:56,286 INFO L226 Difference]: Without dead ends: 469 [2022-03-01 17:04:56,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=827, Invalid=2365, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 17:04:56,287 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 340 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-01 17:04:56,287 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] [2022-03-01 17:04:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-03-01 17:04:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 198. [2022-03-01 17:04:56,292 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) [2022-03-01 17:04:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 433 transitions. [2022-03-01 17:04:56,293 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 433 transitions. Word has length 18 [2022-03-01 17:04:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:56,293 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 433 transitions. [2022-03-01 17:04:56,293 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) [2022-03-01 17:04:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 433 transitions. [2022-03-01 17:04:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:56,294 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:56,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:56,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:56,518 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 [2022-03-01 17:04:56,519 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash -256423017, now seen corresponding path program 9 times [2022-03-01 17:04:56,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:56,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36551121] [2022-03-01 17:04:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:56,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:56,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:56,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36551121] [2022-03-01 17:04:56,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36551121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:56,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136803488] [2022-03-01 17:04:56,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:04:56,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:56,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:56,620 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) [2022-03-01 17:04:56,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-01 17:04:56,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:04:56,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:56,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:56,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:56,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:57,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136803488] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:57,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:57,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-01 17:04:57,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962923925] [2022-03-01 17:04:57,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:57,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:04:57,003 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:04:57,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:04:57,004 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) [2022-03-01 17:04:57,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:57,658 INFO L93 Difference]: Finished difference Result 414 states and 834 transitions. [2022-03-01 17:04:57,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:04:57,659 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 [2022-03-01 17:04:57,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:57,660 INFO L225 Difference]: With dead ends: 414 [2022-03-01 17:04:57,660 INFO L226 Difference]: Without dead ends: 390 [2022-03-01 17:04:57,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=487, Invalid=1405, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 17:04:57,661 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 [2022-03-01 17:04:57,661 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] [2022-03-01 17:04:57,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-01 17:04:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 206. [2022-03-01 17:04:57,666 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) [2022-03-01 17:04:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 447 transitions. [2022-03-01 17:04:57,666 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 447 transitions. Word has length 18 [2022-03-01 17:04:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:57,667 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 447 transitions. [2022-03-01 17:04:57,667 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) [2022-03-01 17:04:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 447 transitions. [2022-03-01 17:04:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:57,667 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:57,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:57,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:57,883 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 [2022-03-01 17:04:57,883 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:57,883 INFO L85 PathProgramCache]: Analyzing trace with hash 247624682, now seen corresponding path program 11 times [2022-03-01 17:04:57,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:57,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455676213] [2022-03-01 17:04:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:57,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:57,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:57,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455676213] [2022-03-01 17:04:57,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455676213] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:57,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51123183] [2022-03-01 17:04:57,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:04:57,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:57,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:57,978 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) [2022-03-01 17:04:57,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-01 17:04:57,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:04:57,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:57,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:57,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:58,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:58,309 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51123183] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:58,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:58,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 17:04:58,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137122831] [2022-03-01 17:04:58,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:58,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 17:04:58,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:58,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 17:04:58,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-01 17:04:58,310 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) [2022-03-01 17:04:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:58,522 INFO L93 Difference]: Finished difference Result 273 states and 568 transitions. [2022-03-01 17:04:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:04:58,523 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 [2022-03-01 17:04:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:58,524 INFO L225 Difference]: With dead ends: 273 [2022-03-01 17:04:58,524 INFO L226 Difference]: Without dead ends: 264 [2022-03-01 17:04:58,524 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 [2022-03-01 17:04:58,524 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 [2022-03-01 17:04:58,525 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] [2022-03-01 17:04:58,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-03-01 17:04:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 208. [2022-03-01 17:04:58,529 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) [2022-03-01 17:04:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 450 transitions. [2022-03-01 17:04:58,529 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 450 transitions. Word has length 18 [2022-03-01 17:04:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:58,529 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 450 transitions. [2022-03-01 17:04:58,530 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) [2022-03-01 17:04:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 450 transitions. [2022-03-01 17:04:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:58,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:58,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:58,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:58,734 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 [2022-03-01 17:04:58,735 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:58,735 INFO L85 PathProgramCache]: Analyzing trace with hash -292856672, now seen corresponding path program 12 times [2022-03-01 17:04:58,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:58,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921603789] [2022-03-01 17:04:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:58,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:58,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:58,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921603789] [2022-03-01 17:04:58,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921603789] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:58,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974882819] [2022-03-01 17:04:58,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:04:58,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:58,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:58,852 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) [2022-03-01 17:04:58,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-01 17:04:58,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:04:58,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:04:58,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:58,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:59,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:04:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:59,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974882819] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:04:59,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:04:59,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-03-01 17:04:59,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419870744] [2022-03-01 17:04:59,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:04:59,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 17:04:59,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:04:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 17:04:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-03-01 17:04:59,182 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) [2022-03-01 17:04:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:04:59,404 INFO L93 Difference]: Finished difference Result 286 states and 594 transitions. [2022-03-01 17:04:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-01 17:04:59,404 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 [2022-03-01 17:04:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:04:59,405 INFO L225 Difference]: With dead ends: 286 [2022-03-01 17:04:59,405 INFO L226 Difference]: Without dead ends: 262 [2022-03-01 17:04:59,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2022-03-01 17:04:59,406 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 [2022-03-01 17:04:59,406 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] [2022-03-01 17:04:59,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-03-01 17:04:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 206. [2022-03-01 17:04:59,410 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) [2022-03-01 17:04:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 446 transitions. [2022-03-01 17:04:59,411 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 446 transitions. Word has length 18 [2022-03-01 17:04:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:04:59,411 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 446 transitions. [2022-03-01 17:04:59,411 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) [2022-03-01 17:04:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 446 transitions. [2022-03-01 17:04:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:04:59,412 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:04:59,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:04:59,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-01 17:04:59,627 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 [2022-03-01 17:04:59,627 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:04:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:04:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash -84563364, now seen corresponding path program 13 times [2022-03-01 17:04:59,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:04:59,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234129370] [2022-03-01 17:04:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:04:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:04:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:59,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:04:59,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234129370] [2022-03-01 17:04:59,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234129370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:04:59,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011401745] [2022-03-01 17:04:59,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:04:59,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:04:59,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:04:59,729 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) [2022-03-01 17:04:59,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-01 17:04:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:04:59,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:04:59,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:04:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:04:59,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:00,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011401745] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:00,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:00,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-01 17:05:00,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129658227] [2022-03-01 17:05:00,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:00,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:05:00,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:05:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:05:00,104 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) [2022-03-01 17:05:00,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:00,410 INFO L93 Difference]: Finished difference Result 300 states and 630 transitions. [2022-03-01 17:05:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 17:05:00,411 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 [2022-03-01 17:05:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:00,412 INFO L225 Difference]: With dead ends: 300 [2022-03-01 17:05:00,412 INFO L226 Difference]: Without dead ends: 278 [2022-03-01 17:05:00,412 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 [2022-03-01 17:05:00,413 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 [2022-03-01 17:05:00,413 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] [2022-03-01 17:05:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-01 17:05:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 207. [2022-03-01 17:05:00,417 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) [2022-03-01 17:05:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 448 transitions. [2022-03-01 17:05:00,418 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 448 transitions. Word has length 18 [2022-03-01 17:05:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:00,418 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 448 transitions. [2022-03-01 17:05:00,418 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) [2022-03-01 17:05:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 448 transitions. [2022-03-01 17:05:00,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:00,419 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:00,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:00,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-01 17:05:00,623 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 [2022-03-01 17:05:00,623 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1675489576, now seen corresponding path program 14 times [2022-03-01 17:05:00,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:00,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139603399] [2022-03-01 17:05:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:00,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:00,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139603399] [2022-03-01 17:05:00,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139603399] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:00,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172510539] [2022-03-01 17:05:00,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:05:00,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:00,719 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) [2022-03-01 17:05:00,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-01 17:05:00,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:05:00,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:00,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:00,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:00,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:01,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172510539] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:01,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:01,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-01 17:05:01,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972766831] [2022-03-01 17:05:01,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:01,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:05:01,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:05:01,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:05:01,091 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) [2022-03-01 17:05:01,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:01,577 INFO L93 Difference]: Finished difference Result 386 states and 786 transitions. [2022-03-01 17:05:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 17:05:01,577 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 [2022-03-01 17:05:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:01,578 INFO L225 Difference]: With dead ends: 386 [2022-03-01 17:05:01,578 INFO L226 Difference]: Without dead ends: 357 [2022-03-01 17:05:01,579 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 [2022-03-01 17:05:01,579 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 244 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-03-01 17:05:01,580 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] [2022-03-01 17:05:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-03-01 17:05:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 221. [2022-03-01 17:05:01,584 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) [2022-03-01 17:05:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 480 transitions. [2022-03-01 17:05:01,584 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 480 transitions. Word has length 18 [2022-03-01 17:05:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:01,585 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 480 transitions. [2022-03-01 17:05:01,585 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) [2022-03-01 17:05:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 480 transitions. [2022-03-01 17:05:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:01,585 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:01,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:01,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-01 17:05:01,791 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 [2022-03-01 17:05:01,791 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash -811202302, now seen corresponding path program 15 times [2022-03-01 17:05:01,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:01,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885163614] [2022-03-01 17:05:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:01,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:01,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:01,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885163614] [2022-03-01 17:05:01,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885163614] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:01,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523216399] [2022-03-01 17:05:01,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:05:01,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:01,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:01,904 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) [2022-03-01 17:05:01,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-01 17:05:01,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:05:01,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:01,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:02,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:02,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523216399] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:02,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:02,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 17:05:02,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744906211] [2022-03-01 17:05:02,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:02,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:05:02,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:05:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:05:02,298 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) [2022-03-01 17:05:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:02,854 INFO L93 Difference]: Finished difference Result 385 states and 789 transitions. [2022-03-01 17:05:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 17:05:02,854 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 [2022-03-01 17:05:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:02,855 INFO L225 Difference]: With dead ends: 385 [2022-03-01 17:05:02,855 INFO L226 Difference]: Without dead ends: 371 [2022-03-01 17:05:02,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 17:05:02,856 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 [2022-03-01 17:05:02,857 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] [2022-03-01 17:05:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-03-01 17:05:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 205. [2022-03-01 17:05:02,860 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) [2022-03-01 17:05:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 442 transitions. [2022-03-01 17:05:02,861 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 442 transitions. Word has length 18 [2022-03-01 17:05:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:02,861 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 442 transitions. [2022-03-01 17:05:02,861 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) [2022-03-01 17:05:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 442 transitions. [2022-03-01 17:05:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:02,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:02,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:02,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-01 17:05:03,067 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 [2022-03-01 17:05:03,067 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1079863165, now seen corresponding path program 10 times [2022-03-01 17:05:03,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:03,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106416382] [2022-03-01 17:05:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:03,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:03,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:03,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106416382] [2022-03-01 17:05:03,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106416382] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:03,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185627665] [2022-03-01 17:05:03,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:05:03,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:03,175 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) [2022-03-01 17:05:03,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-01 17:05:03,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:05:03,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:03,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:03,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:03,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:03,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185627665] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:03,598 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:03,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-01 17:05:03,598 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962876837] [2022-03-01 17:05:03,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:03,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 17:05:03,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 17:05:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:05:03,599 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) [2022-03-01 17:05:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:04,278 INFO L93 Difference]: Finished difference Result 334 states and 673 transitions. [2022-03-01 17:05:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-01 17:05:04,278 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 [2022-03-01 17:05:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:04,279 INFO L225 Difference]: With dead ends: 334 [2022-03-01 17:05:04,279 INFO L226 Difference]: Without dead ends: 328 [2022-03-01 17:05:04,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=609, Invalid=1647, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:04,280 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 [2022-03-01 17:05:04,281 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] [2022-03-01 17:05:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-01 17:05:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 204. [2022-03-01 17:05:04,285 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) [2022-03-01 17:05:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 441 transitions. [2022-03-01 17:05:04,285 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 441 transitions. Word has length 18 [2022-03-01 17:05:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:04,285 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 441 transitions. [2022-03-01 17:05:04,285 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) [2022-03-01 17:05:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 441 transitions. [2022-03-01 17:05:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:04,286 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:04,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:04,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-03-01 17:05:04,486 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 [2022-03-01 17:05:04,487 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1356919465, now seen corresponding path program 11 times [2022-03-01 17:05:04,487 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:04,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517686310] [2022-03-01 17:05:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:04,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:04,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:04,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517686310] [2022-03-01 17:05:04,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517686310] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:04,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045539116] [2022-03-01 17:05:04,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:05:04,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:04,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:04,583 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) [2022-03-01 17:05:04,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-01 17:05:04,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:05:04,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:04,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:04,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:04,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:04,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045539116] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:04,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:04,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-01 17:05:04,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441699560] [2022-03-01 17:05:04,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:04,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 17:05:04,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:04,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 17:05:04,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:05:04,985 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) [2022-03-01 17:05:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:05,884 INFO L93 Difference]: Finished difference Result 437 states and 877 transitions. [2022-03-01 17:05:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 17:05:05,885 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 [2022-03-01 17:05:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:05,886 INFO L225 Difference]: With dead ends: 437 [2022-03-01 17:05:05,886 INFO L226 Difference]: Without dead ends: 423 [2022-03-01 17:05:05,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=775, Invalid=1981, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 17:05:05,887 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:05,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 457 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:05:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-01 17:05:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 212. [2022-03-01 17:05:05,899 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) [2022-03-01 17:05:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 466 transitions. [2022-03-01 17:05:05,899 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 466 transitions. Word has length 18 [2022-03-01 17:05:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:05,900 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 466 transitions. [2022-03-01 17:05:05,900 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) [2022-03-01 17:05:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 466 transitions. [2022-03-01 17:05:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:05,900 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:05,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:05,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:06,119 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 [2022-03-01 17:05:06,119 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1058776395, now seen corresponding path program 12 times [2022-03-01 17:05:06,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:06,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851453712] [2022-03-01 17:05:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:06,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:06,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:06,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851453712] [2022-03-01 17:05:06,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851453712] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:06,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201966960] [2022-03-01 17:05:06,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:05:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:06,216 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) [2022-03-01 17:05:06,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-01 17:05:06,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:05:06,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:06,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:06,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:06,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:06,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201966960] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:06,597 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:06,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-01 17:05:06,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446767361] [2022-03-01 17:05:06,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:06,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:05:06,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:05:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:05:06,598 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) [2022-03-01 17:05:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:07,073 INFO L93 Difference]: Finished difference Result 377 states and 771 transitions. [2022-03-01 17:05:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 17:05:07,073 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 [2022-03-01 17:05:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:07,074 INFO L225 Difference]: With dead ends: 377 [2022-03-01 17:05:07,074 INFO L226 Difference]: Without dead ends: 353 [2022-03-01 17:05:07,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=478, Invalid=1244, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 17:05:07,075 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 [2022-03-01 17:05:07,075 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] [2022-03-01 17:05:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-01 17:05:07,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 212. [2022-03-01 17:05:07,080 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) [2022-03-01 17:05:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 463 transitions. [2022-03-01 17:05:07,080 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 463 transitions. Word has length 18 [2022-03-01 17:05:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:07,081 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 463 transitions. [2022-03-01 17:05:07,081 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) [2022-03-01 17:05:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 463 transitions. [2022-03-01 17:05:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:07,081 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:07,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:07,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:07,287 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 [2022-03-01 17:05:07,287 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 190400250, now seen corresponding path program 16 times [2022-03-01 17:05:07,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:07,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843033826] [2022-03-01 17:05:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:07,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:07,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843033826] [2022-03-01 17:05:07,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843033826] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:07,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058429986] [2022-03-01 17:05:07,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:05:07,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:07,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:07,400 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) [2022-03-01 17:05:07,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-01 17:05:07,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:05:07,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:07,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:07,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:07,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058429986] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:07,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:07,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-03-01 17:05:07,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177356696] [2022-03-01 17:05:07,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:07,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:05:07,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:05:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:05:07,789 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) [2022-03-01 17:05:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:08,412 INFO L93 Difference]: Finished difference Result 381 states and 774 transitions. [2022-03-01 17:05:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-01 17:05:08,412 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 [2022-03-01 17:05:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:08,413 INFO L225 Difference]: With dead ends: 381 [2022-03-01 17:05:08,414 INFO L226 Difference]: Without dead ends: 356 [2022-03-01 17:05:08,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2022-03-01 17:05:08,414 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:08,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 394 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:05:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-01 17:05:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 227. [2022-03-01 17:05:08,419 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) [2022-03-01 17:05:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 497 transitions. [2022-03-01 17:05:08,420 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 497 transitions. Word has length 18 [2022-03-01 17:05:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:08,420 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 497 transitions. [2022-03-01 17:05:08,420 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) [2022-03-01 17:05:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 497 transitions. [2022-03-01 17:05:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:08,421 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:08,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:08,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:08,621 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 [2022-03-01 17:05:08,621 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:08,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1998675668, now seen corresponding path program 17 times [2022-03-01 17:05:08,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:08,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69693853] [2022-03-01 17:05:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:08,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:08,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:08,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69693853] [2022-03-01 17:05:08,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69693853] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:08,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207942923] [2022-03-01 17:05:08,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:05:08,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:08,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:08,718 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) [2022-03-01 17:05:08,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-01 17:05:08,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:05:08,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:08,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:08,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:08,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:09,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207942923] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:09,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:09,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-03-01 17:05:09,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345900606] [2022-03-01 17:05:09,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:09,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:05:09,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:05:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:05:09,106 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) [2022-03-01 17:05:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:09,716 INFO L93 Difference]: Finished difference Result 384 states and 785 transitions. [2022-03-01 17:05:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-01 17:05:09,717 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 [2022-03-01 17:05:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:09,718 INFO L225 Difference]: With dead ends: 384 [2022-03-01 17:05:09,718 INFO L226 Difference]: Without dead ends: 370 [2022-03-01 17:05:09,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 17:05:09,719 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 [2022-03-01 17:05:09,719 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] [2022-03-01 17:05:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-03-01 17:05:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 221. [2022-03-01 17:05:09,722 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) [2022-03-01 17:05:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 486 transitions. [2022-03-01 17:05:09,723 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 486 transitions. Word has length 18 [2022-03-01 17:05:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:09,723 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 486 transitions. [2022-03-01 17:05:09,723 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) [2022-03-01 17:05:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 486 transitions. [2022-03-01 17:05:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:09,724 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:09,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:09,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-01 17:05:09,927 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 [2022-03-01 17:05:09,927 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1044229949, now seen corresponding path program 13 times [2022-03-01 17:05:09,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:09,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935004949] [2022-03-01 17:05:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:10,022 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:10,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935004949] [2022-03-01 17:05:10,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935004949] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:10,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137962175] [2022-03-01 17:05:10,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:05:10,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:10,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:10,024 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) [2022-03-01 17:05:10,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-01 17:05:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:10,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:10,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:10,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:10,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137962175] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:10,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:10,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-03-01 17:05:10,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619872973] [2022-03-01 17:05:10,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:10,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-01 17:05:10,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-01 17:05:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-03-01 17:05:10,452 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) [2022-03-01 17:05:10,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:10,956 INFO L93 Difference]: Finished difference Result 322 states and 671 transitions. [2022-03-01 17:05:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-01 17:05:10,956 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 [2022-03-01 17:05:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:10,957 INFO L225 Difference]: With dead ends: 322 [2022-03-01 17:05:10,957 INFO L226 Difference]: Without dead ends: 315 [2022-03-01 17:05:10,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=1226, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 17:05:10,958 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:10,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 616 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:05:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-03-01 17:05:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2022-03-01 17:05:10,962 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) [2022-03-01 17:05:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 496 transitions. [2022-03-01 17:05:10,963 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 496 transitions. Word has length 18 [2022-03-01 17:05:10,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:10,963 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 496 transitions. [2022-03-01 17:05:10,963 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) [2022-03-01 17:05:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 496 transitions. [2022-03-01 17:05:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:10,964 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:10,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:10,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:11,171 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 [2022-03-01 17:05:11,171 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1558502009, now seen corresponding path program 14 times [2022-03-01 17:05:11,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:11,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022796958] [2022-03-01 17:05:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:11,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:11,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022796958] [2022-03-01 17:05:11,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022796958] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:11,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792640490] [2022-03-01 17:05:11,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:05:11,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:11,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:11,274 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) [2022-03-01 17:05:11,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-01 17:05:11,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:05:11,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:11,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:11,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:11,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:11,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792640490] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:11,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:11,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-03-01 17:05:11,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9227716] [2022-03-01 17:05:11,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:11,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-01 17:05:11,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-01 17:05:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:05:11,645 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) [2022-03-01 17:05:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:11,966 INFO L93 Difference]: Finished difference Result 329 states and 685 transitions. [2022-03-01 17:05:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 17:05:11,967 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 [2022-03-01 17:05:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:11,968 INFO L225 Difference]: With dead ends: 329 [2022-03-01 17:05:11,968 INFO L226 Difference]: Without dead ends: 304 [2022-03-01 17:05:11,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-03-01 17:05:11,968 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 [2022-03-01 17:05:11,969 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] [2022-03-01 17:05:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-01 17:05:11,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 232. [2022-03-01 17:05:11,972 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) [2022-03-01 17:05:11,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 510 transitions. [2022-03-01 17:05:11,973 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 510 transitions. Word has length 18 [2022-03-01 17:05:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:11,973 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 510 transitions. [2022-03-01 17:05:11,973 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) [2022-03-01 17:05:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 510 transitions. [2022-03-01 17:05:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-01 17:05:11,974 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:11,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:11,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:12,199 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 [2022-03-01 17:05:12,199 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:12,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:12,199 INFO L85 PathProgramCache]: Analyzing trace with hash -505252739, now seen corresponding path program 15 times [2022-03-01 17:05:12,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:12,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519619195] [2022-03-01 17:05:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:12,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:12,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:12,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519619195] [2022-03-01 17:05:12,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519619195] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:12,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420016295] [2022-03-01 17:05:12,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:05:12,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:12,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:12,298 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) [2022-03-01 17:05:12,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-01 17:05:12,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:05:12,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:12,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 17:05:12,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:12,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:12,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420016295] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:12,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:12,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-03-01 17:05:12,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205343395] [2022-03-01 17:05:12,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:12,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-01 17:05:12,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-01 17:05:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-03-01 17:05:12,642 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) [2022-03-01 17:05:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:12,911 INFO L93 Difference]: Finished difference Result 285 states and 602 transitions. [2022-03-01 17:05:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-01 17:05:12,911 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 [2022-03-01 17:05:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:12,912 INFO L225 Difference]: With dead ends: 285 [2022-03-01 17:05:12,912 INFO L226 Difference]: Without dead ends: 266 [2022-03-01 17:05:12,913 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 [2022-03-01 17:05:12,913 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 [2022-03-01 17:05:12,913 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] [2022-03-01 17:05:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-03-01 17:05:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 232. [2022-03-01 17:05:12,917 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) [2022-03-01 17:05:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 509 transitions. [2022-03-01 17:05:12,917 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 509 transitions. Word has length 18 [2022-03-01 17:05:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:12,918 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 509 transitions. [2022-03-01 17:05:12,918 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) [2022-03-01 17:05:12,918 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 509 transitions. [2022-03-01 17:05:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:12,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:12,918 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:12,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:13,135 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 [2022-03-01 17:05:13,135 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1671790291, now seen corresponding path program 16 times [2022-03-01 17:05:13,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:13,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780726068] [2022-03-01 17:05:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:13,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:13,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780726068] [2022-03-01 17:05:13,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780726068] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:13,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727152659] [2022-03-01 17:05:13,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:05:13,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:13,273 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) [2022-03-01 17:05:13,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-01 17:05:13,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:05:13,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:13,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 17:05:13,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:13,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:13,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727152659] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:13,881 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:13,881 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-03-01 17:05:13,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478726319] [2022-03-01 17:05:13,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:13,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 17:05:13,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 17:05:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2022-03-01 17:05:13,882 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) [2022-03-01 17:05:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:15,592 INFO L93 Difference]: Finished difference Result 668 states and 1344 transitions. [2022-03-01 17:05:15,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-01 17:05:15,592 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 [2022-03-01 17:05:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:15,595 INFO L225 Difference]: With dead ends: 668 [2022-03-01 17:05:15,595 INFO L226 Difference]: Without dead ends: 641 [2022-03-01 17:05:15,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=976, Invalid=3184, Unknown=0, NotChecked=0, Total=4160 [2022-03-01 17:05:15,596 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 [2022-03-01 17:05:15,596 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] [2022-03-01 17:05:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-03-01 17:05:15,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 228. [2022-03-01 17:05:15,603 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) [2022-03-01 17:05:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 499 transitions. [2022-03-01 17:05:15,603 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 499 transitions. Word has length 21 [2022-03-01 17:05:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:15,604 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 499 transitions. [2022-03-01 17:05:15,604 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) [2022-03-01 17:05:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 499 transitions. [2022-03-01 17:05:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:15,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:15,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:15,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:15,819 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 [2022-03-01 17:05:15,819 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:15,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1728684205, now seen corresponding path program 17 times [2022-03-01 17:05:15,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:15,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571312338] [2022-03-01 17:05:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:15,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:15,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571312338] [2022-03-01 17:05:15,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571312338] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:15,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534542820] [2022-03-01 17:05:15,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:05:15,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:15,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:15,964 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) [2022-03-01 17:05:15,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-01 17:05:15,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:05:15,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:15,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-01 17:05:15,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:16,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:16,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534542820] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:16,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:16,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-03-01 17:05:16,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879912925] [2022-03-01 17:05:16,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:16,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-01 17:05:16,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:16,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-01 17:05:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-03-01 17:05:16,536 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) [2022-03-01 17:05:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:17,625 INFO L93 Difference]: Finished difference Result 523 states and 1049 transitions. [2022-03-01 17:05:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 17:05:17,625 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 [2022-03-01 17:05:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:17,627 INFO L225 Difference]: With dead ends: 523 [2022-03-01 17:05:17,627 INFO L226 Difference]: Without dead ends: 493 [2022-03-01 17:05:17,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=669, Invalid=2301, Unknown=0, NotChecked=0, Total=2970 [2022-03-01 17:05:17,628 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 [2022-03-01 17:05:17,628 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] [2022-03-01 17:05:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-01 17:05:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 241. [2022-03-01 17:05:17,634 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) [2022-03-01 17:05:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 534 transitions. [2022-03-01 17:05:17,635 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 534 transitions. Word has length 21 [2022-03-01 17:05:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:17,635 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 534 transitions. [2022-03-01 17:05:17,635 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) [2022-03-01 17:05:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 534 transitions. [2022-03-01 17:05:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:17,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:17,636 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] [2022-03-01 17:05:17,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-03-01 17:05:17,851 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 [2022-03-01 17:05:17,851 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:17,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:17,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1540640512, now seen corresponding path program 1 times [2022-03-01 17:05:17,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:17,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606458725] [2022-03-01 17:05:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:17,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:18,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:18,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606458725] [2022-03-01 17:05:18,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606458725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:18,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782693300] [2022-03-01 17:05:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:18,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:18,066 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) [2022-03-01 17:05:18,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-01 17:05:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:18,087 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:18,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:18,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:19,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782693300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:19,129 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:19,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:19,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779615892] [2022-03-01 17:05:19,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:19,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:19,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:19,131 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) [2022-03-01 17:05:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:22,126 INFO L93 Difference]: Finished difference Result 486 states and 945 transitions. [2022-03-01 17:05:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 17:05:22,126 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 [2022-03-01 17:05:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:22,128 INFO L225 Difference]: With dead ends: 486 [2022-03-01 17:05:22,128 INFO L226 Difference]: Without dead ends: 480 [2022-03-01 17:05:22,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1398, Invalid=9108, Unknown=0, NotChecked=0, Total=10506 [2022-03-01 17:05:22,129 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 390 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:22,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 800 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:05:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-03-01 17:05:22,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 251. [2022-03-01 17:05:22,133 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) [2022-03-01 17:05:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 551 transitions. [2022-03-01 17:05:22,133 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 551 transitions. Word has length 21 [2022-03-01 17:05:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 551 transitions. [2022-03-01 17:05:22,134 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) [2022-03-01 17:05:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 551 transitions. [2022-03-01 17:05:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:22,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:22,134 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] [2022-03-01 17:05:22,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-01 17:05:22,342 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 [2022-03-01 17:05:22,343 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:22,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2081121866, now seen corresponding path program 2 times [2022-03-01 17:05:22,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:22,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308502309] [2022-03-01 17:05:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:22,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:22,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308502309] [2022-03-01 17:05:22,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308502309] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:22,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075862228] [2022-03-01 17:05:22,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:05:22,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:22,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:22,568 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) [2022-03-01 17:05:22,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-01 17:05:22,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:05:22,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:22,589 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:22,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:23,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:23,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075862228] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:23,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:23,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:23,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277541972] [2022-03-01 17:05:23,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:23,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:23,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:23,636 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) [2022-03-01 17:05:26,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:26,480 INFO L93 Difference]: Finished difference Result 502 states and 967 transitions. [2022-03-01 17:05:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 17:05:26,480 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 [2022-03-01 17:05:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:26,482 INFO L225 Difference]: With dead ends: 502 [2022-03-01 17:05:26,482 INFO L226 Difference]: Without dead ends: 496 [2022-03-01 17:05:26,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1338, Invalid=9168, Unknown=0, NotChecked=0, Total=10506 [2022-03-01 17:05:26,483 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:26,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 635 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 17:05:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-03-01 17:05:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 253. [2022-03-01 17:05:26,489 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) [2022-03-01 17:05:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 555 transitions. [2022-03-01 17:05:26,490 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 555 transitions. Word has length 21 [2022-03-01 17:05:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:26,490 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 555 transitions. [2022-03-01 17:05:26,490 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) [2022-03-01 17:05:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 555 transitions. [2022-03-01 17:05:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:26,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:26,491 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] [2022-03-01 17:05:26,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-01 17:05:26,716 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 [2022-03-01 17:05:26,716 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:26,716 INFO L85 PathProgramCache]: Analyzing trace with hash -938212254, now seen corresponding path program 3 times [2022-03-01 17:05:26,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:26,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402336529] [2022-03-01 17:05:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:26,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:26,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:26,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402336529] [2022-03-01 17:05:26,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402336529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:26,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931611243] [2022-03-01 17:05:26,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:05:26,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:26,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:26,933 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) [2022-03-01 17:05:26,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-01 17:05:26,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:05:26,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:26,953 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:26,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:27,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:27,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931611243] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:27,971 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:27,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:27,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33868243] [2022-03-01 17:05:27,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:27,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:27,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:27,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2060, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:27,972 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) [2022-03-01 17:05:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:31,324 INFO L93 Difference]: Finished difference Result 517 states and 1004 transitions. [2022-03-01 17:05:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 17:05:31,325 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 [2022-03-01 17:05:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:31,326 INFO L225 Difference]: With dead ends: 517 [2022-03-01 17:05:31,326 INFO L226 Difference]: Without dead ends: 511 [2022-03-01 17:05:31,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1517, Invalid=10473, Unknown=0, NotChecked=0, Total=11990 [2022-03-01 17:05:31,327 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 412 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:31,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 913 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:05:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-03-01 17:05:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 255. [2022-03-01 17:05:31,332 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) [2022-03-01 17:05:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 559 transitions. [2022-03-01 17:05:31,333 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 559 transitions. Word has length 21 [2022-03-01 17:05:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:31,333 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 559 transitions. [2022-03-01 17:05:31,334 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) [2022-03-01 17:05:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 559 transitions. [2022-03-01 17:05:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:31,334 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:31,334 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] [2022-03-01 17:05:31,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-01 17:05:31,551 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 [2022-03-01 17:05:31,552 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash -46037548, now seen corresponding path program 4 times [2022-03-01 17:05:31,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:31,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124719061] [2022-03-01 17:05:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:31,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:31,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124719061] [2022-03-01 17:05:31,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124719061] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:31,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711305004] [2022-03-01 17:05:31,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:05:31,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:31,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:31,800 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) [2022-03-01 17:05:31,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-01 17:05:31,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:05:31,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:31,830 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:31,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:32,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:32,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711305004] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:32,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:32,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:32,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017320670] [2022-03-01 17:05:32,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:32,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:32,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:32,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:32,875 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) [2022-03-01 17:05:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:35,715 INFO L93 Difference]: Finished difference Result 517 states and 1006 transitions. [2022-03-01 17:05:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 17:05:35,715 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 [2022-03-01 17:05:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:35,717 INFO L225 Difference]: With dead ends: 517 [2022-03-01 17:05:35,717 INFO L226 Difference]: Without dead ends: 511 [2022-03-01 17:05:35,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1295, Invalid=8805, Unknown=0, NotChecked=0, Total=10100 [2022-03-01 17:05:35,718 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 [2022-03-01 17:05:35,718 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] [2022-03-01 17:05:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-03-01 17:05:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 257. [2022-03-01 17:05:35,724 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) [2022-03-01 17:05:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 563 transitions. [2022-03-01 17:05:35,724 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 563 transitions. Word has length 21 [2022-03-01 17:05:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:35,725 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 563 transitions. [2022-03-01 17:05:35,725 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) [2022-03-01 17:05:35,725 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 563 transitions. [2022-03-01 17:05:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:35,726 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:35,726 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] [2022-03-01 17:05:35,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:35,950 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 [2022-03-01 17:05:35,951 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1901720112, now seen corresponding path program 5 times [2022-03-01 17:05:35,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:35,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992815635] [2022-03-01 17:05:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:35,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:36,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:36,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992815635] [2022-03-01 17:05:36,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992815635] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:36,180 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082244621] [2022-03-01 17:05:36,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:05:36,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:36,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:36,182 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) [2022-03-01 17:05:36,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-01 17:05:36,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:05:36,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:36,204 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:36,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:36,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:37,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082244621] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:37,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:37,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:37,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567213841] [2022-03-01 17:05:37,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:37,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:37,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:37,250 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) [2022-03-01 17:05:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:41,383 INFO L93 Difference]: Finished difference Result 573 states and 1108 transitions. [2022-03-01 17:05:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-01 17:05:41,384 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 [2022-03-01 17:05:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:41,386 INFO L225 Difference]: With dead ends: 573 [2022-03-01 17:05:41,386 INFO L226 Difference]: Without dead ends: 567 [2022-03-01 17:05:41,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4388 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2056, Invalid=13694, Unknown=0, NotChecked=0, Total=15750 [2022-03-01 17:05:41,387 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 514 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:41,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1055 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:05:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-03-01 17:05:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 265. [2022-03-01 17:05:41,393 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) [2022-03-01 17:05:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 581 transitions. [2022-03-01 17:05:41,394 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 581 transitions. Word has length 21 [2022-03-01 17:05:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:41,394 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 581 transitions. [2022-03-01 17:05:41,395 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) [2022-03-01 17:05:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 581 transitions. [2022-03-01 17:05:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:41,395 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:41,395 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] [2022-03-01 17:05:41,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:41,619 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 [2022-03-01 17:05:41,619 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1909042932, now seen corresponding path program 6 times [2022-03-01 17:05:41,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:41,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774600069] [2022-03-01 17:05:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:41,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:41,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:41,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774600069] [2022-03-01 17:05:41,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774600069] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:41,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127009767] [2022-03-01 17:05:41,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:05:41,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:41,857 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) [2022-03-01 17:05:41,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-01 17:05:41,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:05:41,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:41,878 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:41,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:42,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:42,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127009767] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:42,841 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:42,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:05:42,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436100860] [2022-03-01 17:05:42,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:42,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:05:42,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:05:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:05:42,842 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) [2022-03-01 17:05:45,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:45,919 INFO L93 Difference]: Finished difference Result 586 states and 1145 transitions. [2022-03-01 17:05:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 17:05:45,920 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 [2022-03-01 17:05:45,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:45,921 INFO L225 Difference]: With dead ends: 586 [2022-03-01 17:05:45,922 INFO L226 Difference]: Without dead ends: 572 [2022-03-01 17:05:45,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1666, Invalid=10990, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 17:05:45,922 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 466 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:45,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 908 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:05:45,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-01 17:05:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 265. [2022-03-01 17:05:45,929 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) [2022-03-01 17:05:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 579 transitions. [2022-03-01 17:05:45,929 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 579 transitions. Word has length 21 [2022-03-01 17:05:45,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:45,930 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 579 transitions. [2022-03-01 17:05:45,930 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) [2022-03-01 17:05:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 579 transitions. [2022-03-01 17:05:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:45,930 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:45,930 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] [2022-03-01 17:05:45,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-01 17:05:46,154 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 [2022-03-01 17:05:46,154 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1872828558, now seen corresponding path program 7 times [2022-03-01 17:05:46,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:46,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261926021] [2022-03-01 17:05:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:46,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:46,357 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:46,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261926021] [2022-03-01 17:05:46,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261926021] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:46,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60004697] [2022-03-01 17:05:46,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:05:46,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:46,359 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) [2022-03-01 17:05:46,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-01 17:05:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:46,386 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:46,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:46,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:47,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60004697] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:47,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:47,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:47,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820945952] [2022-03-01 17:05:47,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:47,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:47,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:47,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:47,404 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) [2022-03-01 17:05:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:50,507 INFO L93 Difference]: Finished difference Result 523 states and 1024 transitions. [2022-03-01 17:05:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-01 17:05:50,508 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 [2022-03-01 17:05:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:50,509 INFO L225 Difference]: With dead ends: 523 [2022-03-01 17:05:50,509 INFO L226 Difference]: Without dead ends: 520 [2022-03-01 17:05:50,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1342, Invalid=10000, Unknown=0, NotChecked=0, Total=11342 [2022-03-01 17:05:50,510 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 467 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:50,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 750 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:05:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-03-01 17:05:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 270. [2022-03-01 17:05:50,516 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) [2022-03-01 17:05:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 589 transitions. [2022-03-01 17:05:50,517 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 589 transitions. Word has length 21 [2022-03-01 17:05:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:50,517 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 589 transitions. [2022-03-01 17:05:50,517 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) [2022-03-01 17:05:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 589 transitions. [2022-03-01 17:05:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:50,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:50,518 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] [2022-03-01 17:05:50,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-01 17:05:50,739 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 [2022-03-01 17:05:50,740 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash -729918946, now seen corresponding path program 8 times [2022-03-01 17:05:50,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:50,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57786110] [2022-03-01 17:05:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:50,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:50,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57786110] [2022-03-01 17:05:50,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57786110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:50,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052753869] [2022-03-01 17:05:50,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:05:50,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:50,963 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) [2022-03-01 17:05:50,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-01 17:05:50,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:05:50,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:50,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:50,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:51,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:51,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052753869] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:51,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:51,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:51,992 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035804628] [2022-03-01 17:05:51,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:51,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:51,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:51,993 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) [2022-03-01 17:05:55,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:55,599 INFO L93 Difference]: Finished difference Result 548 states and 1075 transitions. [2022-03-01 17:05:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 17:05:55,599 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 [2022-03-01 17:05:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:55,601 INFO L225 Difference]: With dead ends: 548 [2022-03-01 17:05:55,601 INFO L226 Difference]: Without dead ends: 545 [2022-03-01 17:05:55,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1545, Invalid=11795, Unknown=0, NotChecked=0, Total=13340 [2022-03-01 17:05:55,602 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 371 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:55,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 773 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:05:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-03-01 17:05:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 272. [2022-03-01 17:05:55,607 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) [2022-03-01 17:05:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 593 transitions. [2022-03-01 17:05:55,607 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 593 transitions. Word has length 21 [2022-03-01 17:05:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:55,608 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 593 transitions. [2022-03-01 17:05:55,608 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) [2022-03-01 17:05:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 593 transitions. [2022-03-01 17:05:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:05:55,608 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:55,608 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] [2022-03-01 17:05:55,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-01 17:05:55,814 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 [2022-03-01 17:05:55,814 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:05:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash 162255760, now seen corresponding path program 9 times [2022-03-01 17:05:55,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:55,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560528352] [2022-03-01 17:05:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:55,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:56,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:56,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560528352] [2022-03-01 17:05:56,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560528352] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:05:56,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584539878] [2022-03-01 17:05:56,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:05:56,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:05:56,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:56,034 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) [2022-03-01 17:05:56,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-01 17:05:56,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:05:56,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:05:56,054 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:05:56,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:05:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:56,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:05:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:57,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584539878] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:05:57,064 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:05:57,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:05:57,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884895193] [2022-03-01 17:05:57,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:05:57,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:05:57,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:57,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:05:57,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:05:57,065 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) [2022-03-01 17:06:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:00,065 INFO L93 Difference]: Finished difference Result 549 states and 1078 transitions. [2022-03-01 17:06:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 17:06:00,066 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 [2022-03-01 17:06:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:00,067 INFO L225 Difference]: With dead ends: 549 [2022-03-01 17:06:00,067 INFO L226 Difference]: Without dead ends: 546 [2022-03-01 17:06:00,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1327, Invalid=9803, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 17:06:00,068 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 448 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:00,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 779 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:06:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-03-01 17:06:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 270. [2022-03-01 17:06:00,073 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) [2022-03-01 17:06:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 589 transitions. [2022-03-01 17:06:00,073 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 589 transitions. Word has length 21 [2022-03-01 17:06:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:00,073 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 589 transitions. [2022-03-01 17:06:00,074 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) [2022-03-01 17:06:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 589 transitions. [2022-03-01 17:06:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:00,074 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:00,074 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] [2022-03-01 17:06:00,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-01 17:06:00,274 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 [2022-03-01 17:06:00,275 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1693426804, now seen corresponding path program 10 times [2022-03-01 17:06:00,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:00,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446166658] [2022-03-01 17:06:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:00,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:00,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446166658] [2022-03-01 17:06:00,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446166658] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:00,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065830858] [2022-03-01 17:06:00,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:06:00,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:00,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:00,521 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) [2022-03-01 17:06:00,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-01 17:06:00,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:06:00,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:00,545 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:00,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:01,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:01,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065830858] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:01,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:01,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:06:01,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440533164] [2022-03-01 17:06:01,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:01,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:06:01,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:01,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:06:01,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:06:01,604 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) [2022-03-01 17:06:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:05,932 INFO L93 Difference]: Finished difference Result 574 states and 1130 transitions. [2022-03-01 17:06:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-01 17:06:05,932 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 [2022-03-01 17:06:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:05,933 INFO L225 Difference]: With dead ends: 574 [2022-03-01 17:06:05,934 INFO L226 Difference]: Without dead ends: 571 [2022-03-01 17:06:05,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1868, Invalid=14134, Unknown=0, NotChecked=0, Total=16002 [2022-03-01 17:06:05,937 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 415 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:05,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 895 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:06:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-03-01 17:06:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 276. [2022-03-01 17:06:05,942 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) [2022-03-01 17:06:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 601 transitions. [2022-03-01 17:06:05,943 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 601 transitions. Word has length 21 [2022-03-01 17:06:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:05,943 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 601 transitions. [2022-03-01 17:06:05,943 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) [2022-03-01 17:06:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 601 transitions. [2022-03-01 17:06:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:05,943 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:05,944 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] [2022-03-01 17:06:05,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-01 17:06:06,144 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 [2022-03-01 17:06:06,145 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1700749624, now seen corresponding path program 11 times [2022-03-01 17:06:06,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:06,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894734719] [2022-03-01 17:06:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:06,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:06,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894734719] [2022-03-01 17:06:06,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894734719] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:06,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278781045] [2022-03-01 17:06:06,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:06:06,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:06,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:06,357 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) [2022-03-01 17:06:06,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-01 17:06:06,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:06:06,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:06,378 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:06,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:06,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:07,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278781045] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:07,341 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:07,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:06:07,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318220010] [2022-03-01 17:06:07,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:07,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:06:07,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:07,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:06:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:06:07,342 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) [2022-03-01 17:06:10,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:10,872 INFO L93 Difference]: Finished difference Result 602 states and 1187 transitions. [2022-03-01 17:06:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 17:06:10,872 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 [2022-03-01 17:06:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:10,874 INFO L225 Difference]: With dead ends: 602 [2022-03-01 17:06:10,874 INFO L226 Difference]: Without dead ends: 595 [2022-03-01 17:06:10,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3808 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1657, Invalid=11915, Unknown=0, NotChecked=0, Total=13572 [2022-03-01 17:06:10,876 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 428 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:10,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 926 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:06:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-03-01 17:06:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 282. [2022-03-01 17:06:10,881 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) [2022-03-01 17:06:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 614 transitions. [2022-03-01 17:06:10,881 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 614 transitions. Word has length 21 [2022-03-01 17:06:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:10,882 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 614 transitions. [2022-03-01 17:06:10,882 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) [2022-03-01 17:06:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 614 transitions. [2022-03-01 17:06:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:10,882 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:10,882 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] [2022-03-01 17:06:10,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-01 17:06:11,083 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 [2022-03-01 17:06:11,083 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:11,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash 395681954, now seen corresponding path program 12 times [2022-03-01 17:06:11,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:11,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721773955] [2022-03-01 17:06:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:11,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:11,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721773955] [2022-03-01 17:06:11,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721773955] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:11,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024345533] [2022-03-01 17:06:11,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:06:11,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:11,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:11,326 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) [2022-03-01 17:06:11,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-01 17:06:11,348 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:06:11,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:11,349 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:11,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:11,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:12,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024345533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:12,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:12,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:06:12,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471532477] [2022-03-01 17:06:12,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:12,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:06:12,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:06:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:06:12,459 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) [2022-03-01 17:06:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:17,474 INFO L93 Difference]: Finished difference Result 589 states and 1149 transitions. [2022-03-01 17:06:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-01 17:06:17,474 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 [2022-03-01 17:06:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:17,476 INFO L225 Difference]: With dead ends: 589 [2022-03-01 17:06:17,476 INFO L226 Difference]: Without dead ends: 586 [2022-03-01 17:06:17,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5183 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2047, Invalid=15509, Unknown=0, NotChecked=0, Total=17556 [2022-03-01 17:06:17,477 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 466 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:17,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 889 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:06:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-03-01 17:06:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 286. [2022-03-01 17:06:17,483 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) [2022-03-01 17:06:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 623 transitions. [2022-03-01 17:06:17,484 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 623 transitions. Word has length 21 [2022-03-01 17:06:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:17,484 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 623 transitions. [2022-03-01 17:06:17,484 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) [2022-03-01 17:06:17,484 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 623 transitions. [2022-03-01 17:06:17,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:17,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:17,485 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] [2022-03-01 17:06:17,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-01 17:06:17,705 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 [2022-03-01 17:06:17,705 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1287856660, now seen corresponding path program 13 times [2022-03-01 17:06:17,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:17,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387401880] [2022-03-01 17:06:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:17,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:17,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:17,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387401880] [2022-03-01 17:06:17,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387401880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:17,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128477090] [2022-03-01 17:06:17,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:06:17,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:17,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:17,949 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) [2022-03-01 17:06:17,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-01 17:06:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:17,968 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:18,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:18,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128477090] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:18,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:18,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:06:18,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943023732] [2022-03-01 17:06:18,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:18,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:06:18,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:06:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:06:18,986 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) [2022-03-01 17:06:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:23,532 INFO L93 Difference]: Finished difference Result 595 states and 1159 transitions. [2022-03-01 17:06:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-01 17:06:23,533 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 [2022-03-01 17:06:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:23,536 INFO L225 Difference]: With dead ends: 595 [2022-03-01 17:06:23,536 INFO L226 Difference]: Without dead ends: 592 [2022-03-01 17:06:23,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4338 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1856, Invalid=13396, Unknown=0, NotChecked=0, Total=15252 [2022-03-01 17:06:23,538 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 446 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:23,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1115 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 17:06:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-03-01 17:06:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 284. [2022-03-01 17:06:23,544 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) [2022-03-01 17:06:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 619 transitions. [2022-03-01 17:06:23,545 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 619 transitions. Word has length 21 [2022-03-01 17:06:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:23,545 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 619 transitions. [2022-03-01 17:06:23,545 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) [2022-03-01 17:06:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 619 transitions. [2022-03-01 17:06:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:23,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:23,546 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] [2022-03-01 17:06:23,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-01 17:06:23,767 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 [2022-03-01 17:06:23,767 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:23,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -567825904, now seen corresponding path program 14 times [2022-03-01 17:06:23,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:23,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461827954] [2022-03-01 17:06:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:23,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:23,992 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:23,992 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461827954] [2022-03-01 17:06:23,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461827954] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:23,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849283717] [2022-03-01 17:06:23,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:06:23,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:23,994 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) [2022-03-01 17:06:23,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-01 17:06:24,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:06:24,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:24,020 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:24,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:24,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:25,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849283717] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:25,029 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:25,029 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:06:25,029 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573718222] [2022-03-01 17:06:25,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:25,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:06:25,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:25,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:06:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:06:25,030 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) [2022-03-01 17:06:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:30,974 INFO L93 Difference]: Finished difference Result 642 states and 1253 transitions. [2022-03-01 17:06:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-01 17:06:30,975 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 [2022-03-01 17:06:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:30,977 INFO L225 Difference]: With dead ends: 642 [2022-03-01 17:06:30,977 INFO L226 Difference]: Without dead ends: 639 [2022-03-01 17:06:30,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6831 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2630, Invalid=19422, Unknown=0, NotChecked=0, Total=22052 [2022-03-01 17:06:30,978 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:30,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 816 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:06:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-01 17:06:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 290. [2022-03-01 17:06:30,983 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) [2022-03-01 17:06:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 631 transitions. [2022-03-01 17:06:30,984 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 631 transitions. Word has length 21 [2022-03-01 17:06:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:30,984 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 631 transitions. [2022-03-01 17:06:30,984 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) [2022-03-01 17:06:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 631 transitions. [2022-03-01 17:06:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:30,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:30,985 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] [2022-03-01 17:06:31,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-01 17:06:31,185 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 [2022-03-01 17:06:31,185 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:31,186 INFO L85 PathProgramCache]: Analyzing trace with hash -575148724, now seen corresponding path program 15 times [2022-03-01 17:06:31,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:31,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823831703] [2022-03-01 17:06:31,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:31,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:31,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:31,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823831703] [2022-03-01 17:06:31,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823831703] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:31,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550365468] [2022-03-01 17:06:31,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:06:31,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:31,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:31,425 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) [2022-03-01 17:06:31,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-01 17:06:31,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:06:31,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:31,448 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:31,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:31,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:32,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550365468] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:32,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:32,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:06:32,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800826049] [2022-03-01 17:06:32,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:32,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:06:32,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:32,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:06:32,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:06:32,475 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) [2022-03-01 17:06:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:37,458 INFO L93 Difference]: Finished difference Result 684 states and 1339 transitions. [2022-03-01 17:06:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-01 17:06:37,459 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 [2022-03-01 17:06:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:37,461 INFO L225 Difference]: With dead ends: 684 [2022-03-01 17:06:37,461 INFO L226 Difference]: Without dead ends: 677 [2022-03-01 17:06:37,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6076 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2418, Invalid=17322, Unknown=0, NotChecked=0, Total=19740 [2022-03-01 17:06:37,467 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 534 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:37,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 855 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:06:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-03-01 17:06:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 286. [2022-03-01 17:06:37,472 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) [2022-03-01 17:06:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 624 transitions. [2022-03-01 17:06:37,472 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 624 transitions. Word has length 21 [2022-03-01 17:06:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:37,473 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 624 transitions. [2022-03-01 17:06:37,473 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) [2022-03-01 17:06:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 624 transitions. [2022-03-01 17:06:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:37,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:37,473 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] [2022-03-01 17:06:37,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-03-01 17:06:37,674 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 [2022-03-01 17:06:37,674 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1047410512, now seen corresponding path program 16 times [2022-03-01 17:06:37,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:37,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79574404] [2022-03-01 17:06:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:37,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:37,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79574404] [2022-03-01 17:06:37,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79574404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:37,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041249738] [2022-03-01 17:06:37,891 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:06:37,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:37,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:37,892 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) [2022-03-01 17:06:37,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-01 17:06:37,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:06:37,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:37,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:37,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:38,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:38,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041249738] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:38,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:38,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:06:38,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087264546] [2022-03-01 17:06:38,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:38,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:06:38,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:06:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:06:38,941 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) [2022-03-01 17:06:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:43,274 INFO L93 Difference]: Finished difference Result 619 states and 1216 transitions. [2022-03-01 17:06:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 17:06:43,274 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 [2022-03-01 17:06:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:43,276 INFO L225 Difference]: With dead ends: 619 [2022-03-01 17:06:43,276 INFO L226 Difference]: Without dead ends: 616 [2022-03-01 17:06:43,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4241 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1910, Invalid=12852, Unknown=0, NotChecked=0, Total=14762 [2022-03-01 17:06:43,277 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:43,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 924 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:06:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-03-01 17:06:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 288. [2022-03-01 17:06:43,284 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) [2022-03-01 17:06:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 629 transitions. [2022-03-01 17:06:43,284 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 629 transitions. Word has length 21 [2022-03-01 17:06:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:43,284 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 629 transitions. [2022-03-01 17:06:43,285 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) [2022-03-01 17:06:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 629 transitions. [2022-03-01 17:06:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:43,285 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:43,285 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] [2022-03-01 17:06:43,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-01 17:06:43,486 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 [2022-03-01 17:06:43,486 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:43,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -808272052, now seen corresponding path program 17 times [2022-03-01 17:06:43,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:43,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186250089] [2022-03-01 17:06:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:43,689 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:43,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186250089] [2022-03-01 17:06:43,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186250089] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:43,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261983699] [2022-03-01 17:06:43,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:06:43,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:43,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:43,693 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) [2022-03-01 17:06:43,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-01 17:06:43,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:06:43,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:43,723 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:43,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:44,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:44,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261983699] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:44,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:44,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:06:44,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439514375] [2022-03-01 17:06:44,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:44,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:06:44,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:06:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:06:44,748 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) [2022-03-01 17:06:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:50,483 INFO L93 Difference]: Finished difference Result 670 states and 1316 transitions. [2022-03-01 17:06:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-01 17:06:50,483 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 [2022-03-01 17:06:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:50,485 INFO L225 Difference]: With dead ends: 670 [2022-03-01 17:06:50,485 INFO L226 Difference]: Without dead ends: 667 [2022-03-01 17:06:50,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6529 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2632, Invalid=18248, Unknown=0, NotChecked=0, Total=20880 [2022-03-01 17:06:50,487 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 483 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:06:50,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 909 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 17:06:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-03-01 17:06:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 292. [2022-03-01 17:06:50,494 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) [2022-03-01 17:06:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 637 transitions. [2022-03-01 17:06:50,495 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 637 transitions. Word has length 21 [2022-03-01 17:06:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:50,495 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 637 transitions. [2022-03-01 17:06:50,495 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) [2022-03-01 17:06:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 637 transitions. [2022-03-01 17:06:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:50,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:50,496 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] [2022-03-01 17:06:50,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-01 17:06:50,699 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 [2022-03-01 17:06:50,699 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash -815594872, now seen corresponding path program 18 times [2022-03-01 17:06:50,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:50,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584086040] [2022-03-01 17:06:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:50,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:50,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584086040] [2022-03-01 17:06:50,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584086040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:50,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262805821] [2022-03-01 17:06:50,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:06:50,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:50,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:50,901 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) [2022-03-01 17:06:50,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-01 17:06:50,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:06:50,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:06:50,921 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:50,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:51,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:51,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262805821] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:51,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:51,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:06:51,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593486470] [2022-03-01 17:06:51,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:51,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:06:51,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:06:51,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:06:51,922 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) [2022-03-01 17:06:56,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:06:56,807 INFO L93 Difference]: Finished difference Result 704 states and 1385 transitions. [2022-03-01 17:06:56,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-01 17:06:56,808 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 [2022-03-01 17:06:56,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:06:56,809 INFO L225 Difference]: With dead ends: 704 [2022-03-01 17:06:56,809 INFO L226 Difference]: Without dead ends: 697 [2022-03-01 17:06:56,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6109 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2558, Invalid=16902, Unknown=0, NotChecked=0, Total=19460 [2022-03-01 17:06:56,810 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 [2022-03-01 17:06:56,810 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] [2022-03-01 17:06:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-03-01 17:06:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 290. [2022-03-01 17:06:56,816 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) [2022-03-01 17:06:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 634 transitions. [2022-03-01 17:06:56,817 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 634 transitions. Word has length 21 [2022-03-01 17:06:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:06:56,817 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 634 transitions. [2022-03-01 17:06:56,817 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) [2022-03-01 17:06:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 634 transitions. [2022-03-01 17:06:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:06:56,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:06:56,818 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] [2022-03-01 17:06:56,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-01 17:06:57,019 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 [2022-03-01 17:06:57,020 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:06:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:06:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash -64553140, now seen corresponding path program 19 times [2022-03-01 17:06:57,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:06:57,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704771725] [2022-03-01 17:06:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:06:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:06:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:57,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:06:57,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704771725] [2022-03-01 17:06:57,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704771725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:06:57,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003686269] [2022-03-01 17:06:57,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:06:57,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:06:57,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:06:57,232 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) [2022-03-01 17:06:57,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-01 17:06:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:06:57,250 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:06:57,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:06:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:57,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:06:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:06:58,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003686269] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:06:58,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:06:58,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:06:58,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250796804] [2022-03-01 17:06:58,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:06:58,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:06:58,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:06:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:06:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:06:58,300 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) [2022-03-01 17:07:08,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:08,415 INFO L93 Difference]: Finished difference Result 822 states and 1606 transitions. [2022-03-01 17:07:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-03-01 17:07:08,415 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 [2022-03-01 17:07:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:08,416 INFO L225 Difference]: With dead ends: 822 [2022-03-01 17:07:08,416 INFO L226 Difference]: Without dead ends: 816 [2022-03-01 17:07:08,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16291 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=5572, Invalid=38738, Unknown=0, NotChecked=0, Total=44310 [2022-03-01 17:07:08,418 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 791 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:08,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 825 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 17:07:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-03-01 17:07:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 297. [2022-03-01 17:07:08,426 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) [2022-03-01 17:07:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 653 transitions. [2022-03-01 17:07:08,426 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 653 transitions. Word has length 21 [2022-03-01 17:07:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:08,426 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 653 transitions. [2022-03-01 17:07:08,426 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) [2022-03-01 17:07:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 653 transitions. [2022-03-01 17:07:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:08,427 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:08,427 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] [2022-03-01 17:07:08,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-01 17:07:08,627 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 [2022-03-01 17:07:08,628 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:08,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash -71875960, now seen corresponding path program 20 times [2022-03-01 17:07:08,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:08,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027222942] [2022-03-01 17:07:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:08,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:08,823 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:08,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027222942] [2022-03-01 17:07:08,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027222942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:08,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947407142] [2022-03-01 17:07:08,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:07:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:08,825 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) [2022-03-01 17:07:08,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-01 17:07:08,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:07:08,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:08,843 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:08,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:09,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:09,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947407142] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:09,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:09,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:07:09,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696548501] [2022-03-01 17:07:09,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:09,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:07:09,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:07:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:07:09,834 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) [2022-03-01 17:07:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:18,776 INFO L93 Difference]: Finished difference Result 883 states and 1727 transitions. [2022-03-01 17:07:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-01 17:07:18,777 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 [2022-03-01 17:07:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:18,778 INFO L225 Difference]: With dead ends: 883 [2022-03-01 17:07:18,778 INFO L226 Difference]: Without dead ends: 869 [2022-03-01 17:07:18,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14521 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5333, Invalid=34069, Unknown=0, NotChecked=0, Total=39402 [2022-03-01 17:07:18,780 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 794 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:18,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1083 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-01 17:07:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-03-01 17:07:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 304. [2022-03-01 17:07:18,786 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) [2022-03-01 17:07:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 678 transitions. [2022-03-01 17:07:18,786 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 678 transitions. Word has length 21 [2022-03-01 17:07:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:18,786 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 678 transitions. [2022-03-01 17:07:18,787 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) [2022-03-01 17:07:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 678 transitions. [2022-03-01 17:07:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:18,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:18,787 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] [2022-03-01 17:07:18,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-01 17:07:18,987 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 [2022-03-01 17:07:18,988 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2039413384, now seen corresponding path program 21 times [2022-03-01 17:07:18,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:18,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366478929] [2022-03-01 17:07:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:18,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:19,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366478929] [2022-03-01 17:07:19,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366478929] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:19,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238733787] [2022-03-01 17:07:19,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:07:19,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:19,203 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) [2022-03-01 17:07:19,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-01 17:07:19,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:07:19,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:19,223 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:19,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:19,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:20,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238733787] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:20,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:20,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:07:20,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243354752] [2022-03-01 17:07:20,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:20,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:07:20,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:07:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:07:20,207 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) [2022-03-01 17:07:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:27,224 INFO L93 Difference]: Finished difference Result 823 states and 1648 transitions. [2022-03-01 17:07:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-03-01 17:07:27,224 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 [2022-03-01 17:07:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:27,226 INFO L225 Difference]: With dead ends: 823 [2022-03-01 17:07:27,226 INFO L226 Difference]: Without dead ends: 802 [2022-03-01 17:07:27,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10340 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=4207, Invalid=25205, Unknown=0, NotChecked=0, Total=29412 [2022-03-01 17:07:27,227 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 671 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:27,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 809 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 17:07:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-03-01 17:07:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 302. [2022-03-01 17:07:27,233 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) [2022-03-01 17:07:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 671 transitions. [2022-03-01 17:07:27,233 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 671 transitions. Word has length 21 [2022-03-01 17:07:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:27,233 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 671 transitions. [2022-03-01 17:07:27,233 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) [2022-03-01 17:07:27,233 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 671 transitions. [2022-03-01 17:07:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:27,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:27,234 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] [2022-03-01 17:07:27,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-01 17:07:27,435 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 [2022-03-01 17:07:27,435 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1363186158, now seen corresponding path program 22 times [2022-03-01 17:07:27,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:27,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659004205] [2022-03-01 17:07:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:27,644 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:27,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659004205] [2022-03-01 17:07:27,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659004205] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:27,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380256000] [2022-03-01 17:07:27,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:07:27,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:27,645 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) [2022-03-01 17:07:27,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-01 17:07:27,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:07:27,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:27,665 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:27,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:28,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:28,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380256000] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:28,671 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:28,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:28,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443979179] [2022-03-01 17:07:28,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:28,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:28,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:28,672 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) [2022-03-01 17:07:30,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:30,768 INFO L93 Difference]: Finished difference Result 541 states and 1090 transitions. [2022-03-01 17:07:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-01 17:07:30,769 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 [2022-03-01 17:07:30,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:30,770 INFO L225 Difference]: With dead ends: 541 [2022-03-01 17:07:30,770 INFO L226 Difference]: Without dead ends: 538 [2022-03-01 17:07:30,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2036 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=965, Invalid=7407, Unknown=0, NotChecked=0, Total=8372 [2022-03-01 17:07:30,770 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 248 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:30,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 722 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:07:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-01 17:07:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 307. [2022-03-01 17:07:30,775 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) [2022-03-01 17:07:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 682 transitions. [2022-03-01 17:07:30,776 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 682 transitions. Word has length 21 [2022-03-01 17:07:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:30,776 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 682 transitions. [2022-03-01 17:07:30,776 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) [2022-03-01 17:07:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 682 transitions. [2022-03-01 17:07:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:30,776 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:30,776 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] [2022-03-01 17:07:30,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-01 17:07:30,977 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 [2022-03-01 17:07:30,977 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1788871526, now seen corresponding path program 23 times [2022-03-01 17:07:30,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:30,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554877465] [2022-03-01 17:07:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:30,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:31,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:31,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554877465] [2022-03-01 17:07:31,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554877465] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:31,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748352654] [2022-03-01 17:07:31,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:07:31,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:31,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:31,190 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) [2022-03-01 17:07:31,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-01 17:07:31,208 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:07:31,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:31,209 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:31,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:31,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:32,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748352654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:32,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:32,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:32,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613954334] [2022-03-01 17:07:32,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:32,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:32,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:32,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:32,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:32,223 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) [2022-03-01 17:07:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:34,586 INFO L93 Difference]: Finished difference Result 558 states and 1127 transitions. [2022-03-01 17:07:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-01 17:07:34,586 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 [2022-03-01 17:07:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:34,588 INFO L225 Difference]: With dead ends: 558 [2022-03-01 17:07:34,588 INFO L226 Difference]: Without dead ends: 555 [2022-03-01 17:07:34,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1063, Invalid=8249, Unknown=0, NotChecked=0, Total=9312 [2022-03-01 17:07:34,589 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 248 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:34,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 713 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:07:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-01 17:07:34,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 309. [2022-03-01 17:07:34,595 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) [2022-03-01 17:07:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 686 transitions. [2022-03-01 17:07:34,596 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 686 transitions. Word has length 21 [2022-03-01 17:07:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:34,596 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 686 transitions. [2022-03-01 17:07:34,597 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) [2022-03-01 17:07:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 686 transitions. [2022-03-01 17:07:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:34,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:34,597 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] [2022-03-01 17:07:34,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-03-01 17:07:34,811 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 [2022-03-01 17:07:34,811 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash -896696820, now seen corresponding path program 24 times [2022-03-01 17:07:34,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:34,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343777632] [2022-03-01 17:07:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:34,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:35,043 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:35,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343777632] [2022-03-01 17:07:35,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343777632] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:35,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440241172] [2022-03-01 17:07:35,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:07:35,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:35,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:35,045 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) [2022-03-01 17:07:35,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-01 17:07:35,064 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:07:35,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:35,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:35,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:35,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:36,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440241172] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:36,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:36,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:36,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003620998] [2022-03-01 17:07:36,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:36,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:36,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:36,126 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) [2022-03-01 17:07:38,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:38,121 INFO L93 Difference]: Finished difference Result 559 states and 1130 transitions. [2022-03-01 17:07:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 17:07:38,121 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 [2022-03-01 17:07:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:38,122 INFO L225 Difference]: With dead ends: 559 [2022-03-01 17:07:38,122 INFO L226 Difference]: Without dead ends: 556 [2022-03-01 17:07:38,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=952, Invalid=7238, Unknown=0, NotChecked=0, Total=8190 [2022-03-01 17:07:38,123 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 [2022-03-01 17:07:38,123 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] [2022-03-01 17:07:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-01 17:07:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 311. [2022-03-01 17:07:38,133 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) [2022-03-01 17:07:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 690 transitions. [2022-03-01 17:07:38,134 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 690 transitions. Word has length 21 [2022-03-01 17:07:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:38,134 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 690 transitions. [2022-03-01 17:07:38,134 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) [2022-03-01 17:07:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 690 transitions. [2022-03-01 17:07:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:38,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:38,134 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] [2022-03-01 17:07:38,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-01 17:07:38,335 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 [2022-03-01 17:07:38,335 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:38,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:38,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1542587912, now seen corresponding path program 25 times [2022-03-01 17:07:38,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:38,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330358352] [2022-03-01 17:07:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:38,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:38,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:38,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330358352] [2022-03-01 17:07:38,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330358352] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:38,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95918557] [2022-03-01 17:07:38,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:07:38,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:38,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:38,539 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) [2022-03-01 17:07:38,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-01 17:07:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:38,557 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:38,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:39,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:39,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95918557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:39,561 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:39,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:39,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501357995] [2022-03-01 17:07:39,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:39,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:39,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:39,562 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) [2022-03-01 17:07:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:42,251 INFO L93 Difference]: Finished difference Result 578 states and 1176 transitions. [2022-03-01 17:07:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 17:07:42,252 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 [2022-03-01 17:07:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:42,253 INFO L225 Difference]: With dead ends: 578 [2022-03-01 17:07:42,253 INFO L226 Difference]: Without dead ends: 575 [2022-03-01 17:07:42,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1290, Invalid=9840, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 17:07:42,254 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:42,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 849 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:07:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-01 17:07:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 305. [2022-03-01 17:07:42,258 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) [2022-03-01 17:07:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 678 transitions. [2022-03-01 17:07:42,259 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 678 transitions. Word has length 21 [2022-03-01 17:07:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:42,259 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 678 transitions. [2022-03-01 17:07:42,259 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) [2022-03-01 17:07:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 678 transitions. [2022-03-01 17:07:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:42,260 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:42,260 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] [2022-03-01 17:07:42,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-01 17:07:42,460 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 [2022-03-01 17:07:42,460 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:42,461 INFO L85 PathProgramCache]: Analyzing trace with hash -663270626, now seen corresponding path program 26 times [2022-03-01 17:07:42,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:42,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484189627] [2022-03-01 17:07:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:42,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:42,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:42,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484189627] [2022-03-01 17:07:42,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484189627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:42,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331713367] [2022-03-01 17:07:42,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:07:42,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:42,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:42,667 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) [2022-03-01 17:07:42,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-01 17:07:42,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:07:42,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:42,693 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:42,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:43,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:43,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331713367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:43,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:43,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:43,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343327567] [2022-03-01 17:07:43,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:43,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:43,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:43,798 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) [2022-03-01 17:07:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:46,892 INFO L93 Difference]: Finished difference Result 569 states and 1152 transitions. [2022-03-01 17:07:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-01 17:07:46,893 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 [2022-03-01 17:07:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:46,894 INFO L225 Difference]: With dead ends: 569 [2022-03-01 17:07:46,894 INFO L226 Difference]: Without dead ends: 566 [2022-03-01 17:07:46,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3314 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1407, Invalid=10803, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 17:07:46,895 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:46,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 648 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:07:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-03-01 17:07:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 309. [2022-03-01 17:07:46,901 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) [2022-03-01 17:07:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 687 transitions. [2022-03-01 17:07:46,902 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 687 transitions. Word has length 21 [2022-03-01 17:07:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:46,902 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 687 transitions. [2022-03-01 17:07:46,902 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) [2022-03-01 17:07:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 687 transitions. [2022-03-01 17:07:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:46,903 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:46,903 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] [2022-03-01 17:07:46,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-03-01 17:07:47,123 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 [2022-03-01 17:07:47,123 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:47,124 INFO L85 PathProgramCache]: Analyzing trace with hash 228904080, now seen corresponding path program 27 times [2022-03-01 17:07:47,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:47,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359647647] [2022-03-01 17:07:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:47,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:47,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:47,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359647647] [2022-03-01 17:07:47,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359647647] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:47,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830304484] [2022-03-01 17:07:47,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:07:47,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:47,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:47,337 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) [2022-03-01 17:07:47,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-01 17:07:47,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:07:47,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:47,356 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:47,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:47,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:48,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830304484] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:48,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:48,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:48,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734504354] [2022-03-01 17:07:48,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:48,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:48,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:48,399 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) [2022-03-01 17:07:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:51,318 INFO L93 Difference]: Finished difference Result 575 states and 1162 transitions. [2022-03-01 17:07:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 17:07:51,318 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 [2022-03-01 17:07:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:51,319 INFO L225 Difference]: With dead ends: 575 [2022-03-01 17:07:51,319 INFO L226 Difference]: Without dead ends: 572 [2022-03-01 17:07:51,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1327, Invalid=9803, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 17:07:51,321 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 271 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:51,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 880 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:07:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-01 17:07:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 311. [2022-03-01 17:07:51,328 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) [2022-03-01 17:07:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 691 transitions. [2022-03-01 17:07:51,329 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 691 transitions. Word has length 21 [2022-03-01 17:07:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:51,329 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 691 transitions. [2022-03-01 17:07:51,329 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) [2022-03-01 17:07:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 691 transitions. [2022-03-01 17:07:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:51,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:51,330 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] [2022-03-01 17:07:51,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-01 17:07:51,530 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 [2022-03-01 17:07:51,531 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1626778484, now seen corresponding path program 28 times [2022-03-01 17:07:51,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:51,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634732894] [2022-03-01 17:07:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:51,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:51,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634732894] [2022-03-01 17:07:51,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634732894] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:51,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678357452] [2022-03-01 17:07:51,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:07:51,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:51,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:51,776 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) [2022-03-01 17:07:51,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-01 17:07:51,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:07:51,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:51,801 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:51,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:52,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:52,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678357452] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:52,849 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:52,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:52,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644739513] [2022-03-01 17:07:52,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:52,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:52,850 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:52,851 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) [2022-03-01 17:07:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:07:56,578 INFO L93 Difference]: Finished difference Result 594 states and 1208 transitions. [2022-03-01 17:07:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 17:07:56,579 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 [2022-03-01 17:07:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:07:56,580 INFO L225 Difference]: With dead ends: 594 [2022-03-01 17:07:56,580 INFO L226 Difference]: Without dead ends: 591 [2022-03-01 17:07:56,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4245 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1793, Invalid=13213, Unknown=0, NotChecked=0, Total=15006 [2022-03-01 17:07:56,581 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 334 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:07:56,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 771 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:07:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-03-01 17:07:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 307. [2022-03-01 17:07:56,587 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) [2022-03-01 17:07:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 683 transitions. [2022-03-01 17:07:56,588 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 683 transitions. Word has length 21 [2022-03-01 17:07:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:07:56,588 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 683 transitions. [2022-03-01 17:07:56,588 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) [2022-03-01 17:07:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 683 transitions. [2022-03-01 17:07:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:07:56,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:07:56,589 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] [2022-03-01 17:07:56,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-01 17:07:56,789 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 [2022-03-01 17:07:56,789 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:07:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:07:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash -11542068, now seen corresponding path program 29 times [2022-03-01 17:07:56,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:07:56,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980755612] [2022-03-01 17:07:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:07:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:07:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:07:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:57,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:07:57,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980755612] [2022-03-01 17:07:57,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980755612] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:07:57,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711223839] [2022-03-01 17:07:57,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:07:57,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:07:57,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:07:57,044 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) [2022-03-01 17:07:57,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-01 17:07:57,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:07:57,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:07:57,069 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:07:57,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:07:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:57,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:07:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:07:58,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711223839] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:07:58,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:07:58,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:07:58,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705130846] [2022-03-01 17:07:58,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:07:58,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:07:58,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:07:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:07:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:07:58,241 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) [2022-03-01 17:08:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:01,045 INFO L93 Difference]: Finished difference Result 598 states and 1215 transitions. [2022-03-01 17:08:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 17:08:01,046 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 [2022-03-01 17:08:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:01,047 INFO L225 Difference]: With dead ends: 598 [2022-03-01 17:08:01,047 INFO L226 Difference]: Without dead ends: 595 [2022-03-01 17:08:01,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1377, Invalid=9543, Unknown=0, NotChecked=0, Total=10920 [2022-03-01 17:08:01,051 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 250 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:01,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 677 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:08:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-03-01 17:08:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 311. [2022-03-01 17:08:01,057 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) [2022-03-01 17:08:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 692 transitions. [2022-03-01 17:08:01,058 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 692 transitions. Word has length 21 [2022-03-01 17:08:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:01,058 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 692 transitions. [2022-03-01 17:08:01,058 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) [2022-03-01 17:08:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 692 transitions. [2022-03-01 17:08:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:01,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:01,058 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] [2022-03-01 17:08:01,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-01 17:08:01,259 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 [2022-03-01 17:08:01,259 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:01,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1867224632, now seen corresponding path program 30 times [2022-03-01 17:08:01,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:01,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366156564] [2022-03-01 17:08:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:01,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:01,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:01,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366156564] [2022-03-01 17:08:01,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366156564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:01,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963873643] [2022-03-01 17:08:01,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:08:01,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:01,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:01,476 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) [2022-03-01 17:08:01,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-01 17:08:01,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:08:01,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:01,495 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:01,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:01,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:02,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963873643] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:02,533 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:02,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:02,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401458346] [2022-03-01 17:08:02,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:02,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:02,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:02,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:02,534 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) [2022-03-01 17:08:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:05,882 INFO L93 Difference]: Finished difference Result 617 states and 1258 transitions. [2022-03-01 17:08:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-01 17:08:05,883 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 [2022-03-01 17:08:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:05,885 INFO L225 Difference]: With dead ends: 617 [2022-03-01 17:08:05,885 INFO L226 Difference]: Without dead ends: 614 [2022-03-01 17:08:05,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4094 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1790, Invalid=12490, Unknown=0, NotChecked=0, Total=14280 [2022-03-01 17:08:05,886 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 324 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:05,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 569 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:08:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-03-01 17:08:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 309. [2022-03-01 17:08:05,897 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) [2022-03-01 17:08:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 688 transitions. [2022-03-01 17:08:05,898 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 688 transitions. Word has length 21 [2022-03-01 17:08:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:05,898 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 688 transitions. [2022-03-01 17:08:05,898 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) [2022-03-01 17:08:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 688 transitions. [2022-03-01 17:08:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:05,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:05,899 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] [2022-03-01 17:08:05,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-01 17:08:06,103 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 [2022-03-01 17:08:06,103 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1123505720, now seen corresponding path program 31 times [2022-03-01 17:08:06,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:06,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208416219] [2022-03-01 17:08:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:06,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:06,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:06,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208416219] [2022-03-01 17:08:06,303 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208416219] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:06,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46026218] [2022-03-01 17:08:06,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:08:06,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:06,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:06,304 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) [2022-03-01 17:08:06,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-01 17:08:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:06,330 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:06,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:06,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:07,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46026218] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:07,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:07,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:07,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871229318] [2022-03-01 17:08:07,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:07,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:07,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2031, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:07,382 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) [2022-03-01 17:08:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:12,600 INFO L93 Difference]: Finished difference Result 681 states and 1392 transitions. [2022-03-01 17:08:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-03-01 17:08:12,601 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 [2022-03-01 17:08:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:12,602 INFO L225 Difference]: With dead ends: 681 [2022-03-01 17:08:12,602 INFO L226 Difference]: Without dead ends: 678 [2022-03-01 17:08:12,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8417 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3235, Invalid=21887, Unknown=0, NotChecked=0, Total=25122 [2022-03-01 17:08:12,603 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:12,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 562 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:08:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-03-01 17:08:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 311. [2022-03-01 17:08:12,608 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) [2022-03-01 17:08:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 695 transitions. [2022-03-01 17:08:12,609 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 695 transitions. Word has length 21 [2022-03-01 17:08:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:12,609 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 695 transitions. [2022-03-01 17:08:12,609 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) [2022-03-01 17:08:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 695 transitions. [2022-03-01 17:08:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:12,610 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:12,610 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] [2022-03-01 17:08:12,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-03-01 17:08:12,810 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 [2022-03-01 17:08:12,810 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:12,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:12,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1690030738, now seen corresponding path program 32 times [2022-03-01 17:08:12,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:12,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752647827] [2022-03-01 17:08:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:12,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:13,006 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:13,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752647827] [2022-03-01 17:08:13,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752647827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:13,006 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272976171] [2022-03-01 17:08:13,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:08:13,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:13,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:13,007 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) [2022-03-01 17:08:13,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-01 17:08:13,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:08:13,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:13,027 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:13,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:13,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:14,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272976171] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:14,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:14,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:14,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558651799] [2022-03-01 17:08:14,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:14,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:14,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:14,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:14,076 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) [2022-03-01 17:08:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:16,895 INFO L93 Difference]: Finished difference Result 587 states and 1202 transitions. [2022-03-01 17:08:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 17:08:16,896 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 [2022-03-01 17:08:16,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:16,897 INFO L225 Difference]: With dead ends: 587 [2022-03-01 17:08:16,897 INFO L226 Difference]: Without dead ends: 584 [2022-03-01 17:08:16,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2022-03-01 17:08:16,897 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 301 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:16,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 718 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:08:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-03-01 17:08:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 312. [2022-03-01 17:08:16,902 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) [2022-03-01 17:08:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 697 transitions. [2022-03-01 17:08:16,903 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 697 transitions. Word has length 21 [2022-03-01 17:08:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:16,903 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 697 transitions. [2022-03-01 17:08:16,904 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) [2022-03-01 17:08:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 697 transitions. [2022-03-01 17:08:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:16,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:16,904 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] [2022-03-01 17:08:16,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-01 17:08:17,123 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 [2022-03-01 17:08:17,123 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:17,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:17,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1686986368, now seen corresponding path program 33 times [2022-03-01 17:08:17,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:17,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678368684] [2022-03-01 17:08:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:17,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:17,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678368684] [2022-03-01 17:08:17,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678368684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:17,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821648410] [2022-03-01 17:08:17,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:08:17,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:17,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:17,331 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) [2022-03-01 17:08:17,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-01 17:08:17,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:08:17,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:17,351 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:17,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:17,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:18,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821648410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:18,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:18,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:18,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319950179] [2022-03-01 17:08:18,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:18,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:18,392 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:18,393 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) [2022-03-01 17:08:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:21,559 INFO L93 Difference]: Finished difference Result 596 states and 1228 transitions. [2022-03-01 17:08:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-01 17:08:21,560 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 [2022-03-01 17:08:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:21,561 INFO L225 Difference]: With dead ends: 596 [2022-03-01 17:08:21,561 INFO L226 Difference]: Without dead ends: 593 [2022-03-01 17:08:21,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4071 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1863, Invalid=12657, Unknown=0, NotChecked=0, Total=14520 [2022-03-01 17:08:21,562 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:21,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 653 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:08:21,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-03-01 17:08:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 312. [2022-03-01 17:08:21,566 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) [2022-03-01 17:08:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 697 transitions. [2022-03-01 17:08:21,567 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 697 transitions. Word has length 21 [2022-03-01 17:08:21,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:21,567 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 697 transitions. [2022-03-01 17:08:21,567 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) [2022-03-01 17:08:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 697 transitions. [2022-03-01 17:08:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:21,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:21,568 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] [2022-03-01 17:08:21,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-03-01 17:08:21,768 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 [2022-03-01 17:08:21,768 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1498854626, now seen corresponding path program 34 times [2022-03-01 17:08:21,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:21,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850471641] [2022-03-01 17:08:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:21,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:21,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:21,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850471641] [2022-03-01 17:08:21,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850471641] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:21,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633030635] [2022-03-01 17:08:21,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:08:21,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:21,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:22,001 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) [2022-03-01 17:08:22,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-01 17:08:22,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:08:22,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:22,019 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:22,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:22,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:23,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633030635] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:23,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:23,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:23,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816033870] [2022-03-01 17:08:23,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:23,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:23,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:23,061 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) [2022-03-01 17:08:25,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:25,567 INFO L93 Difference]: Finished difference Result 568 states and 1147 transitions. [2022-03-01 17:08:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 17:08:25,567 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 [2022-03-01 17:08:25,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:25,568 INFO L225 Difference]: With dead ends: 568 [2022-03-01 17:08:25,568 INFO L226 Difference]: Without dead ends: 565 [2022-03-01 17:08:25,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1205, Invalid=8497, Unknown=0, NotChecked=0, Total=9702 [2022-03-01 17:08:25,569 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 [2022-03-01 17:08:25,569 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] [2022-03-01 17:08:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-03-01 17:08:25,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 317. [2022-03-01 17:08:25,573 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) [2022-03-01 17:08:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 708 transitions. [2022-03-01 17:08:25,573 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 708 transitions. Word has length 21 [2022-03-01 17:08:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:25,573 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 708 transitions. [2022-03-01 17:08:25,573 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) [2022-03-01 17:08:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 708 transitions. [2022-03-01 17:08:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:25,574 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:25,574 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] [2022-03-01 17:08:25,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-01 17:08:25,774 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 [2022-03-01 17:08:25,774 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1903937964, now seen corresponding path program 35 times [2022-03-01 17:08:25,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:25,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886647366] [2022-03-01 17:08:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:25,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:25,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:25,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886647366] [2022-03-01 17:08:25,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886647366] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:25,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60900609] [2022-03-01 17:08:25,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:08:25,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:25,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:25,976 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) [2022-03-01 17:08:25,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-01 17:08:25,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:08:25,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:25,997 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:26,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:26,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:27,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60900609] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:27,041 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:27,041 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:27,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978088369] [2022-03-01 17:08:27,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:27,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:27,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:27,042 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) [2022-03-01 17:08:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:29,257 INFO L93 Difference]: Finished difference Result 574 states and 1157 transitions. [2022-03-01 17:08:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 17:08:29,258 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 [2022-03-01 17:08:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:29,259 INFO L225 Difference]: With dead ends: 574 [2022-03-01 17:08:29,259 INFO L226 Difference]: Without dead ends: 571 [2022-03-01 17:08:29,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1098, Invalid=7644, Unknown=0, NotChecked=0, Total=8742 [2022-03-01 17:08:29,259 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 303 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:29,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 694 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:08:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-03-01 17:08:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 315. [2022-03-01 17:08:29,263 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) [2022-03-01 17:08:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 704 transitions. [2022-03-01 17:08:29,264 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 704 transitions. Word has length 21 [2022-03-01 17:08:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:29,264 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 704 transitions. [2022-03-01 17:08:29,264 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) [2022-03-01 17:08:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 704 transitions. [2022-03-01 17:08:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:29,265 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:29,265 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] [2022-03-01 17:08:29,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-01 17:08:29,465 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 [2022-03-01 17:08:29,465 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:29,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash 535346768, now seen corresponding path program 36 times [2022-03-01 17:08:29,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:29,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16574975] [2022-03-01 17:08:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:29,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:29,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16574975] [2022-03-01 17:08:29,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16574975] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:29,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314634227] [2022-03-01 17:08:29,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:08:29,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:29,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:29,692 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) [2022-03-01 17:08:29,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-01 17:08:29,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:08:29,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:29,712 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:29,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:30,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:30,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314634227] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:30,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:30,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:30,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102360395] [2022-03-01 17:08:30,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:30,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:30,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:30,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:30,750 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) [2022-03-01 17:08:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:33,757 INFO L93 Difference]: Finished difference Result 602 states and 1215 transitions. [2022-03-01 17:08:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-01 17:08:33,757 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 [2022-03-01 17:08:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:33,758 INFO L225 Difference]: With dead ends: 602 [2022-03-01 17:08:33,758 INFO L226 Difference]: Without dead ends: 599 [2022-03-01 17:08:33,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3336 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1543, Invalid=10889, Unknown=0, NotChecked=0, Total=12432 [2022-03-01 17:08:33,759 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 399 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:33,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 517 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:08:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-01 17:08:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 321. [2022-03-01 17:08:33,765 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) [2022-03-01 17:08:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 716 transitions. [2022-03-01 17:08:33,766 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 716 transitions. Word has length 21 [2022-03-01 17:08:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:33,766 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 716 transitions. [2022-03-01 17:08:33,767 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) [2022-03-01 17:08:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 716 transitions. [2022-03-01 17:08:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:33,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:33,767 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] [2022-03-01 17:08:33,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-01 17:08:33,991 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 [2022-03-01 17:08:33,991 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 528023948, now seen corresponding path program 37 times [2022-03-01 17:08:33,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:33,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076297118] [2022-03-01 17:08:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:34,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:34,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076297118] [2022-03-01 17:08:34,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076297118] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:34,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077567695] [2022-03-01 17:08:34,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:08:34,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:34,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:34,236 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) [2022-03-01 17:08:34,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-01 17:08:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:34,268 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:34,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:34,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:35,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077567695] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:35,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:35,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:08:35,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506353192] [2022-03-01 17:08:35,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:35,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:08:35,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:35,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:08:35,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:08:35,309 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) [2022-03-01 17:08:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:37,736 INFO L93 Difference]: Finished difference Result 632 states and 1277 transitions. [2022-03-01 17:08:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 17:08:37,736 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 [2022-03-01 17:08:37,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:37,737 INFO L225 Difference]: With dead ends: 632 [2022-03-01 17:08:37,737 INFO L226 Difference]: Without dead ends: 625 [2022-03-01 17:08:37,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2803 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1446, Invalid=9266, Unknown=0, NotChecked=0, Total=10712 [2022-03-01 17:08:37,738 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:37,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 562 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 17:08:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-03-01 17:08:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 318. [2022-03-01 17:08:37,742 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) [2022-03-01 17:08:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 711 transitions. [2022-03-01 17:08:37,743 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 711 transitions. Word has length 21 [2022-03-01 17:08:37,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:37,743 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 711 transitions. [2022-03-01 17:08:37,743 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) [2022-03-01 17:08:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 711 transitions. [2022-03-01 17:08:37,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:37,744 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:37,744 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] [2022-03-01 17:08:37,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-01 17:08:37,944 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 [2022-03-01 17:08:37,944 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:37,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2144384112, now seen corresponding path program 38 times [2022-03-01 17:08:37,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:37,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359126196] [2022-03-01 17:08:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:38,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:38,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359126196] [2022-03-01 17:08:38,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359126196] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:38,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075484220] [2022-03-01 17:08:38,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:08:38,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:38,162 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) [2022-03-01 17:08:38,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-01 17:08:38,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:08:38,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:38,181 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:38,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:38,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:39,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075484220] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:39,242 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:39,242 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:39,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117922491] [2022-03-01 17:08:39,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:39,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:39,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:39,243 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) [2022-03-01 17:08:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:41,894 INFO L93 Difference]: Finished difference Result 586 states and 1183 transitions. [2022-03-01 17:08:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-01 17:08:41,894 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 [2022-03-01 17:08:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:41,895 INFO L225 Difference]: With dead ends: 586 [2022-03-01 17:08:41,895 INFO L226 Difference]: Without dead ends: 583 [2022-03-01 17:08:41,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1196, Invalid=8506, Unknown=0, NotChecked=0, Total=9702 [2022-03-01 17:08:41,896 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 335 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:41,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 529 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:08:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-03-01 17:08:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 320. [2022-03-01 17:08:41,901 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) [2022-03-01 17:08:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 716 transitions. [2022-03-01 17:08:41,901 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 716 transitions. Word has length 21 [2022-03-01 17:08:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:41,902 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 716 transitions. [2022-03-01 17:08:41,902 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) [2022-03-01 17:08:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 716 transitions. [2022-03-01 17:08:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:41,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:41,902 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] [2022-03-01 17:08:41,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-03-01 17:08:42,103 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 [2022-03-01 17:08:42,103 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:42,104 INFO L85 PathProgramCache]: Analyzing trace with hash 294900620, now seen corresponding path program 39 times [2022-03-01 17:08:42,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:42,104 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076813259] [2022-03-01 17:08:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:42,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:42,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076813259] [2022-03-01 17:08:42,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076813259] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:42,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28998615] [2022-03-01 17:08:42,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:08:42,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:42,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:42,332 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) [2022-03-01 17:08:42,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-01 17:08:42,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:08:42,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:42,352 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:42,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:42,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:43,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28998615] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:43,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:43,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:43,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285839057] [2022-03-01 17:08:43,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:43,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:43,400 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:43,401 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) [2022-03-01 17:08:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:46,600 INFO L93 Difference]: Finished difference Result 622 states and 1249 transitions. [2022-03-01 17:08:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-01 17:08:46,600 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 [2022-03-01 17:08:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:46,602 INFO L225 Difference]: With dead ends: 622 [2022-03-01 17:08:46,602 INFO L226 Difference]: Without dead ends: 619 [2022-03-01 17:08:46,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3366 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1529, Invalid=10903, Unknown=0, NotChecked=0, Total=12432 [2022-03-01 17:08:46,603 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 [2022-03-01 17:08:46,603 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] [2022-03-01 17:08:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-03-01 17:08:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 329. [2022-03-01 17:08:46,608 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) [2022-03-01 17:08:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 735 transitions. [2022-03-01 17:08:46,609 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 735 transitions. Word has length 21 [2022-03-01 17:08:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:46,609 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 735 transitions. [2022-03-01 17:08:46,609 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) [2022-03-01 17:08:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 735 transitions. [2022-03-01 17:08:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:46,610 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:46,610 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] [2022-03-01 17:08:46,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-03-01 17:08:46,833 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 [2022-03-01 17:08:46,833 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash 287577800, now seen corresponding path program 40 times [2022-03-01 17:08:46,834 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:46,834 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515866468] [2022-03-01 17:08:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:46,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:47,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:47,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515866468] [2022-03-01 17:08:47,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515866468] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:47,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661980682] [2022-03-01 17:08:47,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:08:47,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:47,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:47,076 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) [2022-03-01 17:08:47,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-01 17:08:47,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:08:47,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:47,099 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:47,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:47,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:48,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661980682] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:48,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:48,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:08:48,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119015350] [2022-03-01 17:08:48,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:48,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:08:48,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:48,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:08:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1939, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:08:48,207 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) [2022-03-01 17:08:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:50,832 INFO L93 Difference]: Finished difference Result 650 states and 1313 transitions. [2022-03-01 17:08:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 17:08:50,833 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 [2022-03-01 17:08:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:50,834 INFO L225 Difference]: With dead ends: 650 [2022-03-01 17:08:50,834 INFO L226 Difference]: Without dead ends: 643 [2022-03-01 17:08:50,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2836 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1436, Invalid=9276, Unknown=0, NotChecked=0, Total=10712 [2022-03-01 17:08:50,835 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 373 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:50,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 683 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:08:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-03-01 17:08:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 328. [2022-03-01 17:08:50,841 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) [2022-03-01 17:08:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 734 transitions. [2022-03-01 17:08:50,842 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 734 transitions. Word has length 21 [2022-03-01 17:08:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:50,842 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 734 transitions. [2022-03-01 17:08:50,842 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) [2022-03-01 17:08:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 734 transitions. [2022-03-01 17:08:50,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:50,843 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:50,843 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] [2022-03-01 17:08:50,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-01 17:08:51,059 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 [2022-03-01 17:08:51,059 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:51,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1038619532, now seen corresponding path program 41 times [2022-03-01 17:08:51,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:51,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188656314] [2022-03-01 17:08:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:51,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:51,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:51,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188656314] [2022-03-01 17:08:51,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188656314] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:51,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529512793] [2022-03-01 17:08:51,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:08:51,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:51,264 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) [2022-03-01 17:08:51,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-01 17:08:51,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:08:51,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:51,285 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:51,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:51,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:52,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529512793] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:52,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:52,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:08:52,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204080147] [2022-03-01 17:08:52,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:52,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:08:52,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:08:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2022, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:08:52,341 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) [2022-03-01 17:08:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:08:56,919 INFO L93 Difference]: Finished difference Result 663 states and 1340 transitions. [2022-03-01 17:08:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-01 17:08:56,920 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 [2022-03-01 17:08:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:08:56,921 INFO L225 Difference]: With dead ends: 663 [2022-03-01 17:08:56,921 INFO L226 Difference]: Without dead ends: 660 [2022-03-01 17:08:56,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5360 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2300, Invalid=15790, Unknown=0, NotChecked=0, Total=18090 [2022-03-01 17:08:56,922 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 352 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:08:56,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 645 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:08:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-03-01 17:08:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 331. [2022-03-01 17:08:56,929 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) [2022-03-01 17:08:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 741 transitions. [2022-03-01 17:08:56,930 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 741 transitions. Word has length 21 [2022-03-01 17:08:56,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:08:56,930 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 741 transitions. [2022-03-01 17:08:56,930 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) [2022-03-01 17:08:56,930 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 741 transitions. [2022-03-01 17:08:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:08:56,931 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:08:56,931 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] [2022-03-01 17:08:56,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-01 17:08:57,147 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 [2022-03-01 17:08:57,147 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:08:57,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:08:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1031296712, now seen corresponding path program 42 times [2022-03-01 17:08:57,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:08:57,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257832591] [2022-03-01 17:08:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:08:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:08:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:08:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:57,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:08:57,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257832591] [2022-03-01 17:08:57,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257832591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:08:57,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591921329] [2022-03-01 17:08:57,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:08:57,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:08:57,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:08:57,395 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) [2022-03-01 17:08:57,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-01 17:08:57,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:08:57,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:08:57,419 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:08:57,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:08:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:58,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:08:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:08:58,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591921329] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:08:58,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:08:58,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:08:58,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495997853] [2022-03-01 17:08:58,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:08:58,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:08:58,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:08:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:08:58,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1928, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:08:58,579 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) [2022-03-01 17:09:02,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:02,669 INFO L93 Difference]: Finished difference Result 690 states and 1388 transitions. [2022-03-01 17:09:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 17:09:02,670 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 [2022-03-01 17:09:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:02,671 INFO L225 Difference]: With dead ends: 690 [2022-03-01 17:09:02,671 INFO L226 Difference]: Without dead ends: 683 [2022-03-01 17:09:02,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5045 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2330, Invalid=14700, Unknown=0, NotChecked=0, Total=17030 [2022-03-01 17:09:02,672 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 [2022-03-01 17:09:02,672 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] [2022-03-01 17:09:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-01 17:09:02,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 332. [2022-03-01 17:09:02,676 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) [2022-03-01 17:09:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 748 transitions. [2022-03-01 17:09:02,677 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 748 transitions. Word has length 21 [2022-03-01 17:09:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:02,677 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 748 transitions. [2022-03-01 17:09:02,677 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) [2022-03-01 17:09:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 748 transitions. [2022-03-01 17:09:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:02,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:02,678 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] [2022-03-01 17:09:02,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-03-01 17:09:02,878 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 [2022-03-01 17:09:02,878 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:02,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1152381240, now seen corresponding path program 43 times [2022-03-01 17:09:02,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:02,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323411277] [2022-03-01 17:09:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:03,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:03,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323411277] [2022-03-01 17:09:03,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323411277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:03,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931078409] [2022-03-01 17:09:03,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:09:03,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:03,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:03,124 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) [2022-03-01 17:09:03,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-01 17:09:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:03,147 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:03,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:03,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:04,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931078409] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:04,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:04,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:04,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124121266] [2022-03-01 17:09:04,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:04,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:04,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:04,274 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) [2022-03-01 17:09:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:07,799 INFO L93 Difference]: Finished difference Result 700 states and 1430 transitions. [2022-03-01 17:09:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-01 17:09:07,800 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 [2022-03-01 17:09:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:07,801 INFO L225 Difference]: With dead ends: 700 [2022-03-01 17:09:07,801 INFO L226 Difference]: Without dead ends: 693 [2022-03-01 17:09:07,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4409 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2207, Invalid=13045, Unknown=0, NotChecked=0, Total=15252 [2022-03-01 17:09:07,802 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 [2022-03-01 17:09:07,802 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] [2022-03-01 17:09:07,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-03-01 17:09:07,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 330. [2022-03-01 17:09:07,806 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) [2022-03-01 17:09:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 740 transitions. [2022-03-01 17:09:07,807 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 740 transitions. Word has length 21 [2022-03-01 17:09:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:07,807 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 740 transitions. [2022-03-01 17:09:07,807 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) [2022-03-01 17:09:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 740 transitions. [2022-03-01 17:09:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:07,807 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:07,807 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] [2022-03-01 17:09:07,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-03-01 17:09:08,008 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 [2022-03-01 17:09:08,008 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash 914993654, now seen corresponding path program 44 times [2022-03-01 17:09:08,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:08,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363928700] [2022-03-01 17:09:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:08,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:08,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:08,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363928700] [2022-03-01 17:09:08,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363928700] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:08,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294582683] [2022-03-01 17:09:08,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:09:08,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:08,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:08,210 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) [2022-03-01 17:09:08,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-01 17:09:08,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:09:08,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:08,229 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:08,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:08,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:09,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294582683] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:09,281 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:09,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:09:09,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778477000] [2022-03-01 17:09:09,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:09,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:09:09,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:09,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:09:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:09:09,282 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) [2022-03-01 17:09:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:12,559 INFO L93 Difference]: Finished difference Result 632 states and 1283 transitions. [2022-03-01 17:09:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 17:09:12,559 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 [2022-03-01 17:09:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:12,560 INFO L225 Difference]: With dead ends: 632 [2022-03-01 17:09:12,560 INFO L226 Difference]: Without dead ends: 629 [2022-03-01 17:09:12,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1659, Invalid=10997, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 17:09:12,561 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 [2022-03-01 17:09:12,561 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] [2022-03-01 17:09:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-03-01 17:09:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 331. [2022-03-01 17:09:12,568 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) [2022-03-01 17:09:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 742 transitions. [2022-03-01 17:09:12,568 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 742 transitions. Word has length 21 [2022-03-01 17:09:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:12,569 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 742 transitions. [2022-03-01 17:09:12,569 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) [2022-03-01 17:09:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 742 transitions. [2022-03-01 17:09:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:12,569 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:12,570 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] [2022-03-01 17:09:12,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-01 17:09:12,784 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 [2022-03-01 17:09:12,784 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash 907670834, now seen corresponding path program 45 times [2022-03-01 17:09:12,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:12,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779192313] [2022-03-01 17:09:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:12,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:13,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:13,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779192313] [2022-03-01 17:09:13,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779192313] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:13,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528599826] [2022-03-01 17:09:13,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:09:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:13,003 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) [2022-03-01 17:09:13,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-01 17:09:13,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:09:13,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:13,023 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:13,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:13,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:14,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528599826] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:14,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:14,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:14,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327166515] [2022-03-01 17:09:14,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:14,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:14,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1932, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:14,044 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) [2022-03-01 17:09:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:16,748 INFO L93 Difference]: Finished difference Result 643 states and 1308 transitions. [2022-03-01 17:09:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 17:09:16,748 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 [2022-03-01 17:09:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:16,749 INFO L225 Difference]: With dead ends: 643 [2022-03-01 17:09:16,749 INFO L226 Difference]: Without dead ends: 636 [2022-03-01 17:09:16,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1525, Invalid=9187, Unknown=0, NotChecked=0, Total=10712 [2022-03-01 17:09:16,750 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:16,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 647 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:09:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-03-01 17:09:16,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 336. [2022-03-01 17:09:16,756 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) [2022-03-01 17:09:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 758 transitions. [2022-03-01 17:09:16,756 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 758 transitions. Word has length 21 [2022-03-01 17:09:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:16,756 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 758 transitions. [2022-03-01 17:09:16,756 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) [2022-03-01 17:09:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 758 transitions. [2022-03-01 17:09:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:16,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:16,757 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] [2022-03-01 17:09:16,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-03-01 17:09:16,957 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 [2022-03-01 17:09:16,958 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:16,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1276007118, now seen corresponding path program 46 times [2022-03-01 17:09:16,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:16,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856543241] [2022-03-01 17:09:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:16,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:17,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:17,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856543241] [2022-03-01 17:09:17,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856543241] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:17,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883548776] [2022-03-01 17:09:17,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:09:17,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:17,187 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) [2022-03-01 17:09:17,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-01 17:09:17,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:09:17,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:17,207 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:17,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:17,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:18,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883548776] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:18,218 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:18,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:18,218 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744074283] [2022-03-01 17:09:18,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:18,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:18,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:18,219 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) [2022-03-01 17:09:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:21,241 INFO L93 Difference]: Finished difference Result 660 states and 1351 transitions. [2022-03-01 17:09:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 17:09:21,242 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 [2022-03-01 17:09:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:21,242 INFO L225 Difference]: With dead ends: 660 [2022-03-01 17:09:21,242 INFO L226 Difference]: Without dead ends: 646 [2022-03-01 17:09:21,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3430 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1786, Invalid=10870, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 17:09:21,243 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 399 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:21,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 564 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:09:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-03-01 17:09:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 332. [2022-03-01 17:09:21,248 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) [2022-03-01 17:09:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 744 transitions. [2022-03-01 17:09:21,248 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 744 transitions. Word has length 21 [2022-03-01 17:09:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:21,248 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 744 transitions. [2022-03-01 17:09:21,248 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) [2022-03-01 17:09:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 744 transitions. [2022-03-01 17:09:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:21,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:21,249 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] [2022-03-01 17:09:21,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-03-01 17:09:21,466 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 [2022-03-01 17:09:21,466 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2956536, now seen corresponding path program 47 times [2022-03-01 17:09:21,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:21,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390020816] [2022-03-01 17:09:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:21,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:21,711 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:21,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390020816] [2022-03-01 17:09:21,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390020816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:21,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935603337] [2022-03-01 17:09:21,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:09:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:21,716 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) [2022-03-01 17:09:21,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-01 17:09:21,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:09:21,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:21,740 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:21,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:22,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:22,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935603337] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:22,903 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:22,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:09:22,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415732506] [2022-03-01 17:09:22,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:22,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:09:22,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:09:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:09:22,904 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) [2022-03-01 17:09:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:26,435 INFO L93 Difference]: Finished difference Result 625 states and 1290 transitions. [2022-03-01 17:09:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 17:09:26,435 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 [2022-03-01 17:09:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:26,436 INFO L225 Difference]: With dead ends: 625 [2022-03-01 17:09:26,436 INFO L226 Difference]: Without dead ends: 622 [2022-03-01 17:09:26,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4130 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1966, Invalid=12796, Unknown=0, NotChecked=0, Total=14762 [2022-03-01 17:09:26,437 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 [2022-03-01 17:09:26,437 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] [2022-03-01 17:09:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-03-01 17:09:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 335. [2022-03-01 17:09:26,441 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) [2022-03-01 17:09:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 751 transitions. [2022-03-01 17:09:26,442 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 751 transitions. Word has length 21 [2022-03-01 17:09:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:26,442 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 751 transitions. [2022-03-01 17:09:26,442 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) [2022-03-01 17:09:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 751 transitions. [2022-03-01 17:09:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:26,443 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:26,443 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] [2022-03-01 17:09:26,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-01 17:09:26,643 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 [2022-03-01 17:09:26,643 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash -10279356, now seen corresponding path program 48 times [2022-03-01 17:09:26,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:26,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64301119] [2022-03-01 17:09:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:26,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:26,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:26,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64301119] [2022-03-01 17:09:26,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64301119] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:26,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246354735] [2022-03-01 17:09:26,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:09:26,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:26,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:26,857 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) [2022-03-01 17:09:26,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-01 17:09:26,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:09:26,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:26,877 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:26,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:27,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:27,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246354735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:27,917 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:27,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:27,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909272360] [2022-03-01 17:09:27,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:27,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:27,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:27,918 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) [2022-03-01 17:09:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:30,918 INFO L93 Difference]: Finished difference Result 642 states and 1320 transitions. [2022-03-01 17:09:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-01 17:09:30,918 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 [2022-03-01 17:09:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:30,919 INFO L225 Difference]: With dead ends: 642 [2022-03-01 17:09:30,919 INFO L226 Difference]: Without dead ends: 635 [2022-03-01 17:09:30,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3541 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1901, Invalid=10981, Unknown=0, NotChecked=0, Total=12882 [2022-03-01 17:09:30,920 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 370 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:30,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 636 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:09:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-03-01 17:09:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 336. [2022-03-01 17:09:30,925 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) [2022-03-01 17:09:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 758 transitions. [2022-03-01 17:09:30,925 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 758 transitions. Word has length 21 [2022-03-01 17:09:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:30,925 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 758 transitions. [2022-03-01 17:09:30,925 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) [2022-03-01 17:09:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 758 transitions. [2022-03-01 17:09:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:30,926 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:30,926 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] [2022-03-01 17:09:30,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-01 17:09:31,126 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 [2022-03-01 17:09:31,127 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2101009988, now seen corresponding path program 49 times [2022-03-01 17:09:31,127 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:31,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337430680] [2022-03-01 17:09:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:31,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:31,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:31,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337430680] [2022-03-01 17:09:31,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337430680] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:31,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177866830] [2022-03-01 17:09:31,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:09:31,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:31,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:31,326 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) [2022-03-01 17:09:31,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-01 17:09:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:31,345 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:31,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:31,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:32,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177866830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:32,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:32,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:32,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115764254] [2022-03-01 17:09:32,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:32,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:32,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:32,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:32,369 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) [2022-03-01 17:09:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:35,088 INFO L93 Difference]: Finished difference Result 643 states and 1322 transitions. [2022-03-01 17:09:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 17:09:35,088 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 [2022-03-01 17:09:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:35,089 INFO L225 Difference]: With dead ends: 643 [2022-03-01 17:09:35,089 INFO L226 Difference]: Without dead ends: 636 [2022-03-01 17:09:35,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2749 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1585, Invalid=9127, Unknown=0, NotChecked=0, Total=10712 [2022-03-01 17:09:35,090 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 [2022-03-01 17:09:35,090 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] [2022-03-01 17:09:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-03-01 17:09:35,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 332. [2022-03-01 17:09:35,095 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) [2022-03-01 17:09:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 744 transitions. [2022-03-01 17:09:35,096 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 744 transitions. Word has length 21 [2022-03-01 17:09:35,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:35,096 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 744 transitions. [2022-03-01 17:09:35,096 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) [2022-03-01 17:09:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 744 transitions. [2022-03-01 17:09:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:35,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:35,097 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] [2022-03-01 17:09:35,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-03-01 17:09:35,297 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 [2022-03-01 17:09:35,297 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1610494580, now seen corresponding path program 50 times [2022-03-01 17:09:35,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:35,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361241647] [2022-03-01 17:09:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:35,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:35,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361241647] [2022-03-01 17:09:35,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361241647] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:35,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553126515] [2022-03-01 17:09:35,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:09:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:35,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:35,501 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) [2022-03-01 17:09:35,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-01 17:09:35,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:09:35,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:35,525 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:35,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:36,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:36,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553126515] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:36,600 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:36,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:09:36,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226057181] [2022-03-01 17:09:36,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:36,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:09:36,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:09:36,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:09:36,601 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) [2022-03-01 17:09:38,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:38,389 INFO L93 Difference]: Finished difference Result 571 states and 1169 transitions. [2022-03-01 17:09:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 17:09:38,390 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 [2022-03-01 17:09:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:38,390 INFO L225 Difference]: With dead ends: 571 [2022-03-01 17:09:38,391 INFO L226 Difference]: Without dead ends: 568 [2022-03-01 17:09:38,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=923, Invalid=6559, Unknown=0, NotChecked=0, Total=7482 [2022-03-01 17:09:38,391 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 199 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:38,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 541 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-01 17:09:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-03-01 17:09:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 328. [2022-03-01 17:09:38,395 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) [2022-03-01 17:09:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-03-01 17:09:38,396 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 21 [2022-03-01 17:09:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:38,396 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-03-01 17:09:38,396 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) [2022-03-01 17:09:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-03-01 17:09:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:38,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:38,396 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] [2022-03-01 17:09:38,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-03-01 17:09:38,597 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 [2022-03-01 17:09:38,597 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 955665800, now seen corresponding path program 51 times [2022-03-01 17:09:38,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:38,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071877284] [2022-03-01 17:09:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:38,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:38,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071877284] [2022-03-01 17:09:38,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071877284] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:38,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111567853] [2022-03-01 17:09:38,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:09:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:38,811 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) [2022-03-01 17:09:38,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-01 17:09:38,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:09:38,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:38,833 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:39,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:39,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111567853] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:39,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:39,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:09:39,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808000020] [2022-03-01 17:09:39,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:39,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:09:39,900 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:09:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:09:39,901 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) [2022-03-01 17:09:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:43,992 INFO L93 Difference]: Finished difference Result 693 states and 1409 transitions. [2022-03-01 17:09:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 17:09:43,993 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 [2022-03-01 17:09:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:43,993 INFO L225 Difference]: With dead ends: 693 [2022-03-01 17:09:43,993 INFO L226 Difference]: Without dead ends: 687 [2022-03-01 17:09:43,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4877 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2304, Invalid=14466, Unknown=0, NotChecked=0, Total=16770 [2022-03-01 17:09:43,994 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 395 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:43,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 680 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:09:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-01 17:09:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 333. [2022-03-01 17:09:44,000 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) [2022-03-01 17:09:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 747 transitions. [2022-03-01 17:09:44,000 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 747 transitions. Word has length 21 [2022-03-01 17:09:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:44,001 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 747 transitions. [2022-03-01 17:09:44,001 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) [2022-03-01 17:09:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 747 transitions. [2022-03-01 17:09:44,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:44,001 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:44,001 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] [2022-03-01 17:09:44,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-01 17:09:44,201 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 [2022-03-01 17:09:44,202 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash 948342980, now seen corresponding path program 52 times [2022-03-01 17:09:44,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:44,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393968750] [2022-03-01 17:09:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:44,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:44,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:44,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393968750] [2022-03-01 17:09:44,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393968750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:44,445 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371813902] [2022-03-01 17:09:44,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:09:44,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:44,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:44,446 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) [2022-03-01 17:09:44,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-01 17:09:44,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:09:44,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:44,469 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:44,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:45,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:45,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371813902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:45,581 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:45,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:45,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663258659] [2022-03-01 17:09:45,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:45,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:45,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:45,582 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) [2022-03-01 17:09:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:49,254 INFO L93 Difference]: Finished difference Result 732 states and 1481 transitions. [2022-03-01 17:09:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 17:09:49,254 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 [2022-03-01 17:09:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:49,255 INFO L225 Difference]: With dead ends: 732 [2022-03-01 17:09:49,255 INFO L226 Difference]: Without dead ends: 718 [2022-03-01 17:09:49,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4800 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2344, Invalid=14168, Unknown=0, NotChecked=0, Total=16512 [2022-03-01 17:09:49,256 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 386 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:49,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 683 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:09:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-03-01 17:09:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 342. [2022-03-01 17:09:49,261 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) [2022-03-01 17:09:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 773 transitions. [2022-03-01 17:09:49,261 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 773 transitions. Word has length 21 [2022-03-01 17:09:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:49,262 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 773 transitions. [2022-03-01 17:09:49,262 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) [2022-03-01 17:09:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 773 transitions. [2022-03-01 17:09:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:49,262 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:49,262 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] [2022-03-01 17:09:49,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-01 17:09:49,474 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 [2022-03-01 17:09:49,475 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1235334972, now seen corresponding path program 53 times [2022-03-01 17:09:49,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:49,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10250570] [2022-03-01 17:09:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:49,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:49,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10250570] [2022-03-01 17:09:49,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10250570] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:49,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128352495] [2022-03-01 17:09:49,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:09:49,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:49,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:49,716 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) [2022-03-01 17:09:49,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-01 17:09:49,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:09:49,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:49,740 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:49,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:50,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:50,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128352495] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:50,818 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:50,818 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:50,818 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101349222] [2022-03-01 17:09:50,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:50,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:50,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:50,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:50,819 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) [2022-03-01 17:09:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:55,187 INFO L93 Difference]: Finished difference Result 740 states and 1494 transitions. [2022-03-01 17:09:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-01 17:09:55,188 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 [2022-03-01 17:09:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:55,189 INFO L225 Difference]: With dead ends: 740 [2022-03-01 17:09:55,189 INFO L226 Difference]: Without dead ends: 719 [2022-03-01 17:09:55,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5585 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2646, Invalid=16260, Unknown=0, NotChecked=0, Total=18906 [2022-03-01 17:09:55,190 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:55,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 801 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:09:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-03-01 17:09:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 340. [2022-03-01 17:09:55,195 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) [2022-03-01 17:09:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 765 transitions. [2022-03-01 17:09:55,195 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 765 transitions. Word has length 21 [2022-03-01 17:09:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:55,195 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 765 transitions. [2022-03-01 17:09:55,195 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) [2022-03-01 17:09:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 765 transitions. [2022-03-01 17:09:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:55,196 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:55,196 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] [2022-03-01 17:09:55,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-03-01 17:09:55,396 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 [2022-03-01 17:09:55,396 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1469937860, now seen corresponding path program 54 times [2022-03-01 17:09:55,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:55,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154026770] [2022-03-01 17:09:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:55,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:55,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154026770] [2022-03-01 17:09:55,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154026770] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:55,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480098873] [2022-03-01 17:09:55,599 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:09:55,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:55,600 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) [2022-03-01 17:09:55,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-01 17:09:55,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:09:55,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:09:55,619 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:55,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:09:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:56,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:09:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:56,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480098873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:09:56,654 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:09:56,654 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:09:56,654 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136226960] [2022-03-01 17:09:56,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:09:56,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:09:56,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:09:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:09:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:09:56,655 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) [2022-03-01 17:09:59,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:09:59,254 INFO L93 Difference]: Finished difference Result 641 states and 1317 transitions. [2022-03-01 17:09:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-01 17:09:59,255 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 [2022-03-01 17:09:59,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:09:59,256 INFO L225 Difference]: With dead ends: 641 [2022-03-01 17:09:59,256 INFO L226 Difference]: Without dead ends: 627 [2022-03-01 17:09:59,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1746, Invalid=10464, Unknown=0, NotChecked=0, Total=12210 [2022-03-01 17:09:59,257 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 259 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:09:59,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 740 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:09:59,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-03-01 17:09:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 340. [2022-03-01 17:09:59,263 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) [2022-03-01 17:09:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 765 transitions. [2022-03-01 17:09:59,264 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 765 transitions. Word has length 21 [2022-03-01 17:09:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:09:59,264 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 765 transitions. [2022-03-01 17:09:59,265 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) [2022-03-01 17:09:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 765 transitions. [2022-03-01 17:09:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:09:59,265 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:09:59,265 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] [2022-03-01 17:09:59,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-01 17:09:59,479 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 [2022-03-01 17:09:59,479 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:09:59,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:09:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -657900934, now seen corresponding path program 55 times [2022-03-01 17:09:59,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:09:59,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36163938] [2022-03-01 17:09:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:09:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:09:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:09:59,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:09:59,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36163938] [2022-03-01 17:09:59,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36163938] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:09:59,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38484790] [2022-03-01 17:09:59,719 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:09:59,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:09:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:09:59,721 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) [2022-03-01 17:09:59,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-01 17:09:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:09:59,739 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:09:59,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:00,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:00,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38484790] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:00,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:00,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:00,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419766874] [2022-03-01 17:10:00,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:00,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:00,803 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:00,804 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) [2022-03-01 17:10:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:04,452 INFO L93 Difference]: Finished difference Result 686 states and 1378 transitions. [2022-03-01 17:10:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 17:10:04,452 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 [2022-03-01 17:10:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:04,453 INFO L225 Difference]: With dead ends: 686 [2022-03-01 17:10:04,453 INFO L226 Difference]: Without dead ends: 680 [2022-03-01 17:10:04,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4210 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2061, Invalid=12945, Unknown=0, NotChecked=0, Total=15006 [2022-03-01 17:10:04,454 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 371 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:10:04,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 631 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:10:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-03-01 17:10:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 341. [2022-03-01 17:10:04,458 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) [2022-03-01 17:10:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 767 transitions. [2022-03-01 17:10:04,459 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 767 transitions. Word has length 21 [2022-03-01 17:10:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:04,459 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 767 transitions. [2022-03-01 17:10:04,459 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) [2022-03-01 17:10:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 767 transitions. [2022-03-01 17:10:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:04,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:04,460 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] [2022-03-01 17:10:04,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:04,660 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 [2022-03-01 17:10:04,660 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:04,661 INFO L85 PathProgramCache]: Analyzing trace with hash -665223754, now seen corresponding path program 56 times [2022-03-01 17:10:04,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:04,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753904949] [2022-03-01 17:10:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:04,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:04,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753904949] [2022-03-01 17:10:04,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753904949] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:04,863 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709040519] [2022-03-01 17:10:04,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:10:04,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:04,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:04,864 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) [2022-03-01 17:10:04,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-01 17:10:04,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:10:04,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:04,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:04,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:05,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:06,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709040519] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:06,026 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:06,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:10:06,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587538035] [2022-03-01 17:10:06,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:06,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:10:06,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:10:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:10:06,027 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) [2022-03-01 17:10:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:08,864 INFO L93 Difference]: Finished difference Result 702 states and 1416 transitions. [2022-03-01 17:10:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 17:10:08,864 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 [2022-03-01 17:10:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:08,865 INFO L225 Difference]: With dead ends: 702 [2022-03-01 17:10:08,865 INFO L226 Difference]: Without dead ends: 688 [2022-03-01 17:10:08,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3417 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1890, Invalid=10766, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 17:10:08,866 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 369 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:10:08,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 597 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:10:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-03-01 17:10:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 346. [2022-03-01 17:10:08,870 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) [2022-03-01 17:10:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 783 transitions. [2022-03-01 17:10:08,871 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 783 transitions. Word has length 21 [2022-03-01 17:10:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:08,871 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 783 transitions. [2022-03-01 17:10:08,871 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) [2022-03-01 17:10:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 783 transitions. [2022-03-01 17:10:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:08,872 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:08,872 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] [2022-03-01 17:10:08,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:09,072 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 [2022-03-01 17:10:09,072 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1446065590, now seen corresponding path program 57 times [2022-03-01 17:10:09,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:09,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375788930] [2022-03-01 17:10:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:09,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:09,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375788930] [2022-03-01 17:10:09,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375788930] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:09,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589281236] [2022-03-01 17:10:09,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:10:09,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:09,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:09,320 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) [2022-03-01 17:10:09,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-01 17:10:09,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:10:09,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:09,343 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:09,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:09,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:10,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589281236] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:10,454 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:10,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:10:10,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71594440] [2022-03-01 17:10:10,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:10,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:10:10,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:10,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:10:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:10:10,455 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) [2022-03-01 17:10:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:13,854 INFO L93 Difference]: Finished difference Result 713 states and 1452 transitions. [2022-03-01 17:10:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 17:10:13,854 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 [2022-03-01 17:10:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:13,855 INFO L225 Difference]: With dead ends: 713 [2022-03-01 17:10:13,855 INFO L226 Difference]: Without dead ends: 692 [2022-03-01 17:10:13,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2165, Invalid=12355, Unknown=0, NotChecked=0, Total=14520 [2022-03-01 17:10:13,856 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 374 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:10:13,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 740 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:10:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-03-01 17:10:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 344. [2022-03-01 17:10:13,861 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) [2022-03-01 17:10:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 773 transitions. [2022-03-01 17:10:13,862 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 773 transitions. Word has length 21 [2022-03-01 17:10:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:13,862 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 773 transitions. [2022-03-01 17:10:13,862 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) [2022-03-01 17:10:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 773 transitions. [2022-03-01 17:10:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:13,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:13,863 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] [2022-03-01 17:10:13,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-03-01 17:10:14,079 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 [2022-03-01 17:10:14,079 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:14,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1575851124, now seen corresponding path program 58 times [2022-03-01 17:10:14,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:14,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518266541] [2022-03-01 17:10:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:14,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:14,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:14,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518266541] [2022-03-01 17:10:14,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518266541] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:14,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302745408] [2022-03-01 17:10:14,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:10:14,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:14,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:14,299 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) [2022-03-01 17:10:14,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-01 17:10:14,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:10:14,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:14,318 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:14,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:14,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:15,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302745408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:15,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:15,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:15,401 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341798808] [2022-03-01 17:10:15,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:15,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:15,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:15,401 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) [2022-03-01 17:10:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:19,322 INFO L93 Difference]: Finished difference Result 676 states and 1388 transitions. [2022-03-01 17:10:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 17:10:19,323 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 [2022-03-01 17:10:19,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:19,324 INFO L225 Difference]: With dead ends: 676 [2022-03-01 17:10:19,324 INFO L226 Difference]: Without dead ends: 670 [2022-03-01 17:10:19,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2329, Invalid=14963, Unknown=0, NotChecked=0, Total=17292 [2022-03-01 17:10:19,325 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 387 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:10:19,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 568 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:10:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-01 17:10:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 348. [2022-03-01 17:10:19,329 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) [2022-03-01 17:10:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 783 transitions. [2022-03-01 17:10:19,330 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 783 transitions. Word has length 21 [2022-03-01 17:10:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:19,330 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 783 transitions. [2022-03-01 17:10:19,330 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) [2022-03-01 17:10:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 783 transitions. [2022-03-01 17:10:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:19,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:19,331 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] [2022-03-01 17:10:19,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-03-01 17:10:19,531 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 [2022-03-01 17:10:19,531 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1583173944, now seen corresponding path program 59 times [2022-03-01 17:10:19,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:19,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258756341] [2022-03-01 17:10:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:19,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:19,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258756341] [2022-03-01 17:10:19,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258756341] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:19,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658350930] [2022-03-01 17:10:19,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:10:19,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:19,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:19,730 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) [2022-03-01 17:10:19,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-01 17:10:19,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:10:19,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:19,748 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:19,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:20,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:20,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658350930] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:20,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:20,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:10:20,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755292143] [2022-03-01 17:10:20,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:20,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:10:20,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:20,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:10:20,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1910, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:10:20,763 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) [2022-03-01 17:10:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:24,275 INFO L93 Difference]: Finished difference Result 713 states and 1453 transitions. [2022-03-01 17:10:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 17:10:24,275 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 [2022-03-01 17:10:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:24,276 INFO L225 Difference]: With dead ends: 713 [2022-03-01 17:10:24,276 INFO L226 Difference]: Without dead ends: 699 [2022-03-01 17:10:24,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4649 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2405, Invalid=13597, Unknown=0, NotChecked=0, Total=16002 [2022-03-01 17:10:24,277 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 313 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:10:24,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 698 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:10:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-03-01 17:10:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 350. [2022-03-01 17:10:24,283 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) [2022-03-01 17:10:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 793 transitions. [2022-03-01 17:10:24,283 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 793 transitions. Word has length 21 [2022-03-01 17:10:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:24,283 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 793 transitions. [2022-03-01 17:10:24,283 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) [2022-03-01 17:10:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 793 transitions. [2022-03-01 17:10:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:24,284 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:24,284 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] [2022-03-01 17:10:24,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-01 17:10:24,484 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 [2022-03-01 17:10:24,485 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:24,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash 528115400, now seen corresponding path program 60 times [2022-03-01 17:10:24,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:24,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627863532] [2022-03-01 17:10:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:24,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:24,701 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:24,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627863532] [2022-03-01 17:10:24,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627863532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:24,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258313475] [2022-03-01 17:10:24,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:10:24,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:24,703 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) [2022-03-01 17:10:24,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-01 17:10:24,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:10:24,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:24,722 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:24,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:25,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:25,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258313475] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:25,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:25,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:10:25,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291465531] [2022-03-01 17:10:25,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:25,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:10:25,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:10:25,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1901, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:10:25,741 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) [2022-03-01 17:10:28,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:28,562 INFO L93 Difference]: Finished difference Result 692 states and 1419 transitions. [2022-03-01 17:10:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-01 17:10:28,562 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 [2022-03-01 17:10:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:28,563 INFO L225 Difference]: With dead ends: 692 [2022-03-01 17:10:28,563 INFO L226 Difference]: Without dead ends: 678 [2022-03-01 17:10:28,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1977, Invalid=10679, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 17:10:28,564 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 [2022-03-01 17:10:28,564 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] [2022-03-01 17:10:28,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-03-01 17:10:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 342. [2022-03-01 17:10:28,569 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) [2022-03-01 17:10:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 769 transitions. [2022-03-01 17:10:28,570 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 769 transitions. Word has length 21 [2022-03-01 17:10:28,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:28,570 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 769 transitions. [2022-03-01 17:10:28,570 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) [2022-03-01 17:10:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 769 transitions. [2022-03-01 17:10:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:28,570 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:28,570 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] [2022-03-01 17:10:28,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:28,792 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 [2022-03-01 17:10:28,792 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1456163560, now seen corresponding path program 61 times [2022-03-01 17:10:28,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:28,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004880898] [2022-03-01 17:10:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:28,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:29,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:29,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004880898] [2022-03-01 17:10:29,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004880898] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:29,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313714120] [2022-03-01 17:10:29,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:10:29,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:29,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:29,016 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) [2022-03-01 17:10:29,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-01 17:10:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:29,035 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:29,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:29,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:30,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313714120] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:30,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:30,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:30,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401636333] [2022-03-01 17:10:30,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:30,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:30,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:30,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:30,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:30,044 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) [2022-03-01 17:10:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:32,455 INFO L93 Difference]: Finished difference Result 654 states and 1310 transitions. [2022-03-01 17:10:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-01 17:10:32,456 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 [2022-03-01 17:10:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:32,456 INFO L225 Difference]: With dead ends: 654 [2022-03-01 17:10:32,456 INFO L226 Difference]: Without dead ends: 651 [2022-03-01 17:10:32,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2618 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1159, Invalid=8941, Unknown=0, NotChecked=0, Total=10100 [2022-03-01 17:10:32,457 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 [2022-03-01 17:10:32,457 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] [2022-03-01 17:10:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-03-01 17:10:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 347. [2022-03-01 17:10:32,463 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) [2022-03-01 17:10:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 780 transitions. [2022-03-01 17:10:32,464 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 780 transitions. Word has length 21 [2022-03-01 17:10:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:32,464 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 780 transitions. [2022-03-01 17:10:32,464 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) [2022-03-01 17:10:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 780 transitions. [2022-03-01 17:10:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:32,465 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:32,465 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] [2022-03-01 17:10:32,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:32,679 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 [2022-03-01 17:10:32,679 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash -313253948, now seen corresponding path program 62 times [2022-03-01 17:10:32,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:32,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878592278] [2022-03-01 17:10:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:32,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:32,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:32,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878592278] [2022-03-01 17:10:32,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878592278] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:32,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380314665] [2022-03-01 17:10:32,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:10:32,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:32,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:32,924 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) [2022-03-01 17:10:32,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-01 17:10:32,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:10:32,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:32,947 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:32,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:33,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:34,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380314665] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:34,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:34,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:34,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355628798] [2022-03-01 17:10:34,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:34,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:34,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:34,011 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) [2022-03-01 17:10:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:36,790 INFO L93 Difference]: Finished difference Result 665 states and 1341 transitions. [2022-03-01 17:10:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-01 17:10:36,790 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 [2022-03-01 17:10:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:36,791 INFO L225 Difference]: With dead ends: 665 [2022-03-01 17:10:36,791 INFO L226 Difference]: Without dead ends: 662 [2022-03-01 17:10:36,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2984 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1256, Invalid=9874, Unknown=0, NotChecked=0, Total=11130 [2022-03-01 17:10:36,792 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 [2022-03-01 17:10:36,792 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] [2022-03-01 17:10:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-03-01 17:10:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 349. [2022-03-01 17:10:36,796 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) [2022-03-01 17:10:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-03-01 17:10:36,796 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-03-01 17:10:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:36,796 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-03-01 17:10:36,796 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) [2022-03-01 17:10:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-03-01 17:10:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:36,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:36,797 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] [2022-03-01 17:10:36,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:36,997 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 [2022-03-01 17:10:36,998 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:36,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash 578920758, now seen corresponding path program 63 times [2022-03-01 17:10:36,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:36,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772806409] [2022-03-01 17:10:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:37,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:37,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772806409] [2022-03-01 17:10:37,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772806409] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:37,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351869206] [2022-03-01 17:10:37,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:10:37,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:37,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:37,199 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) [2022-03-01 17:10:37,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-01 17:10:37,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:10:37,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:37,221 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:37,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:37,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:38,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351869206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:38,236 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:38,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:38,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685655105] [2022-03-01 17:10:38,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:38,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:38,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:38,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:38,237 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) [2022-03-01 17:10:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:40,665 INFO L93 Difference]: Finished difference Result 666 states and 1344 transitions. [2022-03-01 17:10:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-01 17:10:40,666 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 [2022-03-01 17:10:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:40,666 INFO L225 Difference]: With dead ends: 666 [2022-03-01 17:10:40,666 INFO L226 Difference]: Without dead ends: 663 [2022-03-01 17:10:40,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2569 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1145, Invalid=8755, Unknown=0, NotChecked=0, Total=9900 [2022-03-01 17:10:40,667 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 295 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:10:40,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 829 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:10:40,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-03-01 17:10:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 351. [2022-03-01 17:10:40,672 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) [2022-03-01 17:10:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-03-01 17:10:40,672 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-03-01 17:10:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:40,672 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-03-01 17:10:40,672 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) [2022-03-01 17:10:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-03-01 17:10:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:40,673 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:40,673 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] [2022-03-01 17:10:40,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:40,873 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 [2022-03-01 17:10:40,873 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:40,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1276761806, now seen corresponding path program 64 times [2022-03-01 17:10:40,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:40,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838413050] [2022-03-01 17:10:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:40,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:41,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:41,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838413050] [2022-03-01 17:10:41,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838413050] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:41,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648151229] [2022-03-01 17:10:41,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:10:41,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:41,067 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) [2022-03-01 17:10:41,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-01 17:10:41,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:10:41,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:41,086 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:41,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:41,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:42,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648151229] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:42,099 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:42,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:42,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703919118] [2022-03-01 17:10:42,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:42,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:42,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:42,100 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) [2022-03-01 17:10:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:45,105 INFO L93 Difference]: Finished difference Result 693 states and 1412 transitions. [2022-03-01 17:10:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-01 17:10:45,106 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 [2022-03-01 17:10:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:45,106 INFO L225 Difference]: With dead ends: 693 [2022-03-01 17:10:45,106 INFO L226 Difference]: Without dead ends: 690 [2022-03-01 17:10:45,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1503, Invalid=11607, Unknown=0, NotChecked=0, Total=13110 [2022-03-01 17:10:45,107 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 321 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-03-01 17:10:45,107 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] [2022-03-01 17:10:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-01 17:10:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 345. [2022-03-01 17:10:45,112 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) [2022-03-01 17:10:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 776 transitions. [2022-03-01 17:10:45,112 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 776 transitions. Word has length 21 [2022-03-01 17:10:45,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:45,112 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 776 transitions. [2022-03-01 17:10:45,112 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) [2022-03-01 17:10:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 776 transitions. [2022-03-01 17:10:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:45,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:45,113 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] [2022-03-01 17:10:45,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:45,314 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 [2022-03-01 17:10:45,315 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash 812346952, now seen corresponding path program 65 times [2022-03-01 17:10:45,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:45,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060923576] [2022-03-01 17:10:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:45,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:45,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060923576] [2022-03-01 17:10:45,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060923576] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:45,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380762360] [2022-03-01 17:10:45,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:10:45,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:45,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:45,528 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) [2022-03-01 17:10:45,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-01 17:10:45,545 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:10:45,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:45,546 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:45,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:46,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:46,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380762360] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:46,588 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:46,588 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:46,588 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301650887] [2022-03-01 17:10:46,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:46,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:46,588 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:46,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:46,589 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) [2022-03-01 17:10:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:50,285 INFO L93 Difference]: Finished difference Result 680 states and 1374 transitions. [2022-03-01 17:10:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 17:10:50,285 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 [2022-03-01 17:10:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:50,286 INFO L225 Difference]: With dead ends: 680 [2022-03-01 17:10:50,286 INFO L226 Difference]: Without dead ends: 677 [2022-03-01 17:10:50,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4239 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1666, Invalid=13096, Unknown=0, NotChecked=0, Total=14762 [2022-03-01 17:10:50,287 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:10:50,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 857 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:10:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-03-01 17:10:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 349. [2022-03-01 17:10:50,292 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) [2022-03-01 17:10:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 785 transitions. [2022-03-01 17:10:50,293 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 785 transitions. Word has length 21 [2022-03-01 17:10:50,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:50,293 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 785 transitions. [2022-03-01 17:10:50,293 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) [2022-03-01 17:10:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 785 transitions. [2022-03-01 17:10:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:50,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:50,293 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] [2022-03-01 17:10:50,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-01 17:10:50,494 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 [2022-03-01 17:10:50,495 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1704521658, now seen corresponding path program 66 times [2022-03-01 17:10:50,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:50,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184676721] [2022-03-01 17:10:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:50,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:50,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184676721] [2022-03-01 17:10:50,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184676721] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:50,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437642030] [2022-03-01 17:10:50,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:10:50,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:50,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:50,695 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) [2022-03-01 17:10:50,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-01 17:10:50,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:10:50,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:10:50,713 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:50,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:51,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:51,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437642030] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:51,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:51,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:51,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551734942] [2022-03-01 17:10:51,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:51,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:51,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:51,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2051, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:51,766 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) [2022-03-01 17:10:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:10:55,165 INFO L93 Difference]: Finished difference Result 686 states and 1384 transitions. [2022-03-01 17:10:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-01 17:10:55,165 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 [2022-03-01 17:10:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:10:55,166 INFO L225 Difference]: With dead ends: 686 [2022-03-01 17:10:55,166 INFO L226 Difference]: Without dead ends: 683 [2022-03-01 17:10:55,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3807 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1590, Invalid=11982, Unknown=0, NotChecked=0, Total=13572 [2022-03-01 17:10:55,167 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 324 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-01 17:10:55,167 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] [2022-03-01 17:10:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-03-01 17:10:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 351. [2022-03-01 17:10:55,171 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) [2022-03-01 17:10:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 789 transitions. [2022-03-01 17:10:55,172 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 789 transitions. Word has length 21 [2022-03-01 17:10:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:10:55,172 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 789 transitions. [2022-03-01 17:10:55,172 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) [2022-03-01 17:10:55,172 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 789 transitions. [2022-03-01 17:10:55,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:10:55,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:10:55,173 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] [2022-03-01 17:10:55,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-01 17:10:55,373 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 [2022-03-01 17:10:55,373 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:10:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:10:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash -151160906, now seen corresponding path program 67 times [2022-03-01 17:10:55,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:10:55,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994905481] [2022-03-01 17:10:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:10:55,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:10:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:55,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:10:55,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994905481] [2022-03-01 17:10:55,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994905481] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:10:55,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260951339] [2022-03-01 17:10:55,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:10:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:10:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:10:55,566 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) [2022-03-01 17:10:55,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-01 17:10:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:10:55,584 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:10:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:10:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:56,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:10:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:10:56,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260951339] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:10:56,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:10:56,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:10:56,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885577372] [2022-03-01 17:10:56,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:10:56,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:10:56,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:10:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:10:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:10:56,615 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) [2022-03-01 17:11:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:01,038 INFO L93 Difference]: Finished difference Result 713 states and 1452 transitions. [2022-03-01 17:11:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-01 17:11:01,038 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 [2022-03-01 17:11:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:01,039 INFO L225 Difference]: With dead ends: 713 [2022-03-01 17:11:01,039 INFO L226 Difference]: Without dead ends: 710 [2022-03-01 17:11:01,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5323 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2087, Invalid=15735, Unknown=0, NotChecked=0, Total=17822 [2022-03-01 17:11:01,040 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 327 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:01,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 908 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 17:11:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-03-01 17:11:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 347. [2022-03-01 17:11:01,045 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) [2022-03-01 17:11:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 781 transitions. [2022-03-01 17:11:01,045 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 781 transitions. Word has length 21 [2022-03-01 17:11:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:01,045 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 781 transitions. [2022-03-01 17:11:01,045 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) [2022-03-01 17:11:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 781 transitions. [2022-03-01 17:11:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:01,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:01,046 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] [2022-03-01 17:11:01,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-01 17:11:01,246 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 [2022-03-01 17:11:01,246 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1464075510, now seen corresponding path program 68 times [2022-03-01 17:11:01,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:01,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008200591] [2022-03-01 17:11:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:01,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:01,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008200591] [2022-03-01 17:11:01,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008200591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:01,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76349436] [2022-03-01 17:11:01,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:11:01,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:01,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:01,452 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) [2022-03-01 17:11:01,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-01 17:11:01,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:11:01,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:01,472 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:01,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:01,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:02,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76349436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:02,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:02,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:02,516 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11556369] [2022-03-01 17:11:02,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:02,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:02,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:02,517 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) [2022-03-01 17:11:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:05,778 INFO L93 Difference]: Finished difference Result 714 states and 1446 transitions. [2022-03-01 17:11:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 17:11:05,778 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 [2022-03-01 17:11:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:05,779 INFO L225 Difference]: With dead ends: 714 [2022-03-01 17:11:05,779 INFO L226 Difference]: Without dead ends: 711 [2022-03-01 17:11:05,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3950 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1748, Invalid=12058, Unknown=0, NotChecked=0, Total=13806 [2022-03-01 17:11:05,780 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 268 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:05,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 664 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:11:05,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-03-01 17:11:05,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 351. [2022-03-01 17:11:05,784 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) [2022-03-01 17:11:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 790 transitions. [2022-03-01 17:11:05,785 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 790 transitions. Word has length 21 [2022-03-01 17:11:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:05,785 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 790 transitions. [2022-03-01 17:11:05,785 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) [2022-03-01 17:11:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 790 transitions. [2022-03-01 17:11:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:05,786 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:05,786 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] [2022-03-01 17:11:05,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-01 17:11:05,986 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 [2022-03-01 17:11:05,986 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -391607054, now seen corresponding path program 69 times [2022-03-01 17:11:05,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:05,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017647473] [2022-03-01 17:11:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:06,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:06,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017647473] [2022-03-01 17:11:06,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017647473] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:06,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308979584] [2022-03-01 17:11:06,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:11:06,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:06,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:06,189 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) [2022-03-01 17:11:06,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-01 17:11:06,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:11:06,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:06,212 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:06,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:06,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:07,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308979584] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:07,256 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:07,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:07,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222079204] [2022-03-01 17:11:07,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:07,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:07,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:07,257 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) [2022-03-01 17:11:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:11,339 INFO L93 Difference]: Finished difference Result 738 states and 1505 transitions. [2022-03-01 17:11:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 17:11:11,339 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 [2022-03-01 17:11:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:11,340 INFO L225 Difference]: With dead ends: 738 [2022-03-01 17:11:11,340 INFO L226 Difference]: Without dead ends: 735 [2022-03-01 17:11:11,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5227 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2115, Invalid=15177, Unknown=0, NotChecked=0, Total=17292 [2022-03-01 17:11:11,341 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 386 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:11,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 708 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:11:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-01 17:11:11,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 349. [2022-03-01 17:11:11,346 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) [2022-03-01 17:11:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 786 transitions. [2022-03-01 17:11:11,346 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 786 transitions. Word has length 21 [2022-03-01 17:11:11,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:11,346 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 786 transitions. [2022-03-01 17:11:11,347 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) [2022-03-01 17:11:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 786 transitions. [2022-03-01 17:11:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:11,347 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:11,347 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] [2022-03-01 17:11:11,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-03-01 17:11:11,547 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 [2022-03-01 17:11:11,548 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:11,548 INFO L85 PathProgramCache]: Analyzing trace with hash 352111858, now seen corresponding path program 70 times [2022-03-01 17:11:11,548 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:11,548 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073762992] [2022-03-01 17:11:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:11,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:11,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073762992] [2022-03-01 17:11:11,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073762992] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:11,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134651896] [2022-03-01 17:11:11,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:11:11,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:11,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:11,764 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) [2022-03-01 17:11:11,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-01 17:11:11,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:11:11,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:11,789 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:11,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:12,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:12,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134651896] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:12,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:12,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:12,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831726954] [2022-03-01 17:11:12,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:12,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:12,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:12,846 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) [2022-03-01 17:11:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:19,759 INFO L93 Difference]: Finished difference Result 825 states and 1684 transitions. [2022-03-01 17:11:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-01 17:11:19,759 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 [2022-03-01 17:11:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:19,760 INFO L225 Difference]: With dead ends: 825 [2022-03-01 17:11:19,761 INFO L226 Difference]: Without dead ends: 822 [2022-03-01 17:11:19,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12099 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=4246, Invalid=29794, Unknown=0, NotChecked=0, Total=34040 [2022-03-01 17:11:19,762 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 373 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:19,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 841 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 17:11:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-03-01 17:11:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 346. [2022-03-01 17:11:19,766 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) [2022-03-01 17:11:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 777 transitions. [2022-03-01 17:11:19,767 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 777 transitions. Word has length 21 [2022-03-01 17:11:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:19,767 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 777 transitions. [2022-03-01 17:11:19,767 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) [2022-03-01 17:11:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 777 transitions. [2022-03-01 17:11:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:19,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:19,767 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] [2022-03-01 17:11:19,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-03-01 17:11:19,968 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 [2022-03-01 17:11:19,968 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash -214413160, now seen corresponding path program 71 times [2022-03-01 17:11:19,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:19,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345063220] [2022-03-01 17:11:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:20,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:20,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345063220] [2022-03-01 17:11:20,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345063220] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:20,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448077002] [2022-03-01 17:11:20,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:11:20,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:20,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:20,168 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) [2022-03-01 17:11:20,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-01 17:11:20,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:11:20,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:20,193 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:20,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:20,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:21,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448077002] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:21,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:21,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:21,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262590586] [2022-03-01 17:11:21,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:21,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:21,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:21,249 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) [2022-03-01 17:11:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:24,617 INFO L93 Difference]: Finished difference Result 690 states and 1405 transitions. [2022-03-01 17:11:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 17:11:24,617 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 [2022-03-01 17:11:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:24,618 INFO L225 Difference]: With dead ends: 690 [2022-03-01 17:11:24,618 INFO L226 Difference]: Without dead ends: 687 [2022-03-01 17:11:24,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3887 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1721, Invalid=12085, Unknown=0, NotChecked=0, Total=13806 [2022-03-01 17:11:24,619 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 261 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:24,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 810 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 17:11:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-01 17:11:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 347. [2022-03-01 17:11:24,623 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) [2022-03-01 17:11:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 779 transitions. [2022-03-01 17:11:24,623 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 779 transitions. Word has length 21 [2022-03-01 17:11:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:24,623 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 779 transitions. [2022-03-01 17:11:24,623 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) [2022-03-01 17:11:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 779 transitions. [2022-03-01 17:11:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:24,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:24,624 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] [2022-03-01 17:11:24,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-03-01 17:11:24,824 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 [2022-03-01 17:11:24,824 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1132363350, now seen corresponding path program 72 times [2022-03-01 17:11:24,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:24,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255104764] [2022-03-01 17:11:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:24,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:25,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:25,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255104764] [2022-03-01 17:11:25,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255104764] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:25,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048694109] [2022-03-01 17:11:25,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:11:25,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:25,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:25,022 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) [2022-03-01 17:11:25,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-01 17:11:25,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:11:25,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:25,043 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:25,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:25,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:26,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048694109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:26,081 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:26,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:26,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732055174] [2022-03-01 17:11:26,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:26,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:26,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:26,082 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) [2022-03-01 17:11:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:29,848 INFO L93 Difference]: Finished difference Result 711 states and 1455 transitions. [2022-03-01 17:11:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 17:11:29,848 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 [2022-03-01 17:11:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:29,849 INFO L225 Difference]: With dead ends: 711 [2022-03-01 17:11:29,849 INFO L226 Difference]: Without dead ends: 708 [2022-03-01 17:11:29,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5122 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2189, Invalid=15103, Unknown=0, NotChecked=0, Total=17292 [2022-03-01 17:11:29,850 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:29,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 750 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:11:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-03-01 17:11:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 343. [2022-03-01 17:11:29,854 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) [2022-03-01 17:11:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 771 transitions. [2022-03-01 17:11:29,855 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 771 transitions. Word has length 21 [2022-03-01 17:11:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:29,855 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 771 transitions. [2022-03-01 17:11:29,855 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) [2022-03-01 17:11:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 771 transitions. [2022-03-01 17:11:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:29,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:29,855 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] [2022-03-01 17:11:29,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-01 17:11:30,056 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 [2022-03-01 17:11:30,056 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:30,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:30,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1320495092, now seen corresponding path program 73 times [2022-03-01 17:11:30,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:30,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252405018] [2022-03-01 17:11:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:30,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:30,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:30,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252405018] [2022-03-01 17:11:30,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252405018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:30,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793246844] [2022-03-01 17:11:30,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:11:30,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:30,258 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) [2022-03-01 17:11:30,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-01 17:11:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:30,277 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:30,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:30,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:31,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793246844] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:31,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:31,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:31,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949982587] [2022-03-01 17:11:31,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:31,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:31,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:31,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:31,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:31,356 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) [2022-03-01 17:11:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:34,204 INFO L93 Difference]: Finished difference Result 656 states and 1315 transitions. [2022-03-01 17:11:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-01 17:11:34,204 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 [2022-03-01 17:11:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:34,205 INFO L225 Difference]: With dead ends: 656 [2022-03-01 17:11:34,205 INFO L226 Difference]: Without dead ends: 653 [2022-03-01 17:11:34,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3049 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1369, Invalid=9973, Unknown=0, NotChecked=0, Total=11342 [2022-03-01 17:11:34,205 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 [2022-03-01 17:11:34,206 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] [2022-03-01 17:11:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-03-01 17:11:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 348. [2022-03-01 17:11:34,210 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) [2022-03-01 17:11:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 782 transitions. [2022-03-01 17:11:34,210 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 782 transitions. Word has length 21 [2022-03-01 17:11:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:34,210 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 782 transitions. [2022-03-01 17:11:34,210 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) [2022-03-01 17:11:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 782 transitions. [2022-03-01 17:11:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:34,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:34,211 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] [2022-03-01 17:11:34,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-03-01 17:11:34,411 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 [2022-03-01 17:11:34,411 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash -428320386, now seen corresponding path program 74 times [2022-03-01 17:11:34,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:34,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100455597] [2022-03-01 17:11:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:34,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:34,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:34,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100455597] [2022-03-01 17:11:34,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100455597] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:34,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292876665] [2022-03-01 17:11:34,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:11:34,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:34,608 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) [2022-03-01 17:11:34,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-01 17:11:34,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:11:34,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:34,627 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:35,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:35,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292876665] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:35,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:35,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:35,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776373744] [2022-03-01 17:11:35,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:35,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:35,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:35,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:35,695 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) [2022-03-01 17:11:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:38,241 INFO L93 Difference]: Finished difference Result 662 states and 1325 transitions. [2022-03-01 17:11:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-01 17:11:38,247 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 [2022-03-01 17:11:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:38,249 INFO L225 Difference]: With dead ends: 662 [2022-03-01 17:11:38,249 INFO L226 Difference]: Without dead ends: 659 [2022-03-01 17:11:38,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2684 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1275, Invalid=9027, Unknown=0, NotChecked=0, Total=10302 [2022-03-01 17:11:38,250 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 335 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:38,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 667 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:11:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-03-01 17:11:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 350. [2022-03-01 17:11:38,255 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) [2022-03-01 17:11:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 786 transitions. [2022-03-01 17:11:38,256 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 786 transitions. Word has length 21 [2022-03-01 17:11:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:38,256 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 786 transitions. [2022-03-01 17:11:38,256 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) [2022-03-01 17:11:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 786 transitions. [2022-03-01 17:11:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:38,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:38,258 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] [2022-03-01 17:11:38,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-03-01 17:11:38,459 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 [2022-03-01 17:11:38,459 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:38,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2010964346, now seen corresponding path program 75 times [2022-03-01 17:11:38,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:38,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630563084] [2022-03-01 17:11:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:38,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:38,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630563084] [2022-03-01 17:11:38,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630563084] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:38,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014539456] [2022-03-01 17:11:38,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:11:38,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:38,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:38,655 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) [2022-03-01 17:11:38,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-01 17:11:38,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:11:38,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:38,673 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:38,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:39,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:39,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014539456] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:39,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:39,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:39,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607873614] [2022-03-01 17:11:39,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:39,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:39,708 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:39,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:39,709 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) [2022-03-01 17:11:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:43,222 INFO L93 Difference]: Finished difference Result 690 states and 1394 transitions. [2022-03-01 17:11:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-01 17:11:43,223 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 [2022-03-01 17:11:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:43,224 INFO L225 Difference]: With dead ends: 690 [2022-03-01 17:11:43,224 INFO L226 Difference]: Without dead ends: 687 [2022-03-01 17:11:43,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3868 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1699, Invalid=12107, Unknown=0, NotChecked=0, Total=13806 [2022-03-01 17:11:43,225 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 339 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:43,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 811 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:11:43,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-01 17:11:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 346. [2022-03-01 17:11:43,229 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) [2022-03-01 17:11:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 778 transitions. [2022-03-01 17:11:43,230 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 778 transitions. Word has length 21 [2022-03-01 17:11:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:43,230 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 778 transitions. [2022-03-01 17:11:43,230 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) [2022-03-01 17:11:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 778 transitions. [2022-03-01 17:11:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:43,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:43,230 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] [2022-03-01 17:11:43,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-03-01 17:11:43,431 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 [2022-03-01 17:11:43,431 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -668766534, now seen corresponding path program 76 times [2022-03-01 17:11:43,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:43,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556487060] [2022-03-01 17:11:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:43,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:43,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:43,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556487060] [2022-03-01 17:11:43,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556487060] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:43,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580659995] [2022-03-01 17:11:43,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:11:43,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:43,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:43,631 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) [2022-03-01 17:11:43,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-01 17:11:43,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:11:43,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:43,650 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:43,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:44,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:44,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580659995] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:44,705 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:44,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:44,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762311805] [2022-03-01 17:11:44,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:44,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:44,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:44,706 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) [2022-03-01 17:11:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:47,824 INFO L93 Difference]: Finished difference Result 677 states and 1357 transitions. [2022-03-01 17:11:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-01 17:11:47,824 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 [2022-03-01 17:11:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:47,825 INFO L225 Difference]: With dead ends: 677 [2022-03-01 17:11:47,825 INFO L226 Difference]: Without dead ends: 674 [2022-03-01 17:11:47,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3245 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1498, Invalid=10492, Unknown=0, NotChecked=0, Total=11990 [2022-03-01 17:11:47,826 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 321 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:47,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 663 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:11:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-03-01 17:11:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 350. [2022-03-01 17:11:47,830 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) [2022-03-01 17:11:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 787 transitions. [2022-03-01 17:11:47,830 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 787 transitions. Word has length 21 [2022-03-01 17:11:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:47,830 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 787 transitions. [2022-03-01 17:11:47,831 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) [2022-03-01 17:11:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 787 transitions. [2022-03-01 17:11:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:47,831 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:47,831 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] [2022-03-01 17:11:47,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-03-01 17:11:48,031 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 [2022-03-01 17:11:48,032 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1770518198, now seen corresponding path program 77 times [2022-03-01 17:11:48,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:48,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733345214] [2022-03-01 17:11:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:48,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:48,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733345214] [2022-03-01 17:11:48,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733345214] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:48,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873212604] [2022-03-01 17:11:48,231 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:11:48,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:48,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:48,232 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) [2022-03-01 17:11:48,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-01 17:11:48,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:11:48,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:48,251 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:48,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:48,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:49,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873212604] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:49,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:49,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:49,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526669627] [2022-03-01 17:11:49,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:49,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:49,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:49,297 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) [2022-03-01 17:11:52,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:52,860 INFO L93 Difference]: Finished difference Result 706 states and 1419 transitions. [2022-03-01 17:11:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-01 17:11:52,861 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 [2022-03-01 17:11:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:52,861 INFO L225 Difference]: With dead ends: 706 [2022-03-01 17:11:52,861 INFO L226 Difference]: Without dead ends: 703 [2022-03-01 17:11:52,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4131 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1779, Invalid=12741, Unknown=0, NotChecked=0, Total=14520 [2022-03-01 17:11:52,862 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 470 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:52,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 580 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:11:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-03-01 17:11:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 353. [2022-03-01 17:11:52,867 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) [2022-03-01 17:11:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 794 transitions. [2022-03-01 17:11:52,867 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 794 transitions. Word has length 21 [2022-03-01 17:11:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:52,867 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 794 transitions. [2022-03-01 17:11:52,867 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) [2022-03-01 17:11:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 794 transitions. [2022-03-01 17:11:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:52,868 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:52,868 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] [2022-03-01 17:11:52,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-03-01 17:11:53,068 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 [2022-03-01 17:11:53,068 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:53,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1780730186, now seen corresponding path program 78 times [2022-03-01 17:11:53,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:53,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739887827] [2022-03-01 17:11:53,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:53,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:53,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739887827] [2022-03-01 17:11:53,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739887827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:53,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019166009] [2022-03-01 17:11:53,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:11:53,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:53,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:53,275 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) [2022-03-01 17:11:53,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-01 17:11:53,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:11:53,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:11:53,294 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:53,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:11:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:53,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:11:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:54,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019166009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:11:54,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:11:54,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:11:54,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947299904] [2022-03-01 17:11:54,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:11:54,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:11:54,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:11:54,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:11:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:11:54,345 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) [2022-03-01 17:11:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:11:59,559 INFO L93 Difference]: Finished difference Result 754 states and 1519 transitions. [2022-03-01 17:11:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-01 17:11:59,559 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 [2022-03-01 17:11:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:11:59,560 INFO L225 Difference]: With dead ends: 754 [2022-03-01 17:11:59,560 INFO L226 Difference]: Without dead ends: 751 [2022-03-01 17:11:59,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6672 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2723, Invalid=18739, Unknown=0, NotChecked=0, Total=21462 [2022-03-01 17:11:59,561 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 320 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:11:59,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 766 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 17:11:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-03-01 17:11:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 351. [2022-03-01 17:11:59,566 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) [2022-03-01 17:11:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-03-01 17:11:59,567 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-03-01 17:11:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:11:59,567 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-03-01 17:11:59,567 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) [2022-03-01 17:11:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-03-01 17:11:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:11:59,567 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:11:59,567 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] [2022-03-01 17:11:59,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-01 17:11:59,768 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 [2022-03-01 17:11:59,768 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:11:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:11:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1904356064, now seen corresponding path program 79 times [2022-03-01 17:11:59,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:11:59,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948415357] [2022-03-01 17:11:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:11:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:11:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:11:59,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:11:59,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948415357] [2022-03-01 17:11:59,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948415357] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:11:59,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571014683] [2022-03-01 17:11:59,970 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:11:59,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:11:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:11:59,971 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) [2022-03-01 17:11:59,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-01 17:11:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:11:59,989 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:11:59,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:00,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:01,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571014683] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:01,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:01,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:01,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896013205] [2022-03-01 17:12:01,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:01,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:01,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:01,032 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) [2022-03-01 17:12:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:04,374 INFO L93 Difference]: Finished difference Result 691 states and 1406 transitions. [2022-03-01 17:12:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-01 17:12:04,375 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 [2022-03-01 17:12:04,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:04,375 INFO L225 Difference]: With dead ends: 691 [2022-03-01 17:12:04,376 INFO L226 Difference]: Without dead ends: 688 [2022-03-01 17:12:04,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3798 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1809, Invalid=11763, Unknown=0, NotChecked=0, Total=13572 [2022-03-01 17:12:04,376 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 334 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:04,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 617 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:12:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-03-01 17:12:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 352. [2022-03-01 17:12:04,381 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) [2022-03-01 17:12:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 790 transitions. [2022-03-01 17:12:04,381 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 790 transitions. Word has length 21 [2022-03-01 17:12:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:04,381 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 790 transitions. [2022-03-01 17:12:04,382 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) [2022-03-01 17:12:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 790 transitions. [2022-03-01 17:12:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:04,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:04,382 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] [2022-03-01 17:12:04,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-03-01 17:12:04,582 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 [2022-03-01 17:12:04,583 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1472661042, now seen corresponding path program 80 times [2022-03-01 17:12:04,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:04,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697056356] [2022-03-01 17:12:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:04,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:04,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697056356] [2022-03-01 17:12:04,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697056356] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:04,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94327311] [2022-03-01 17:12:04,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:12:04,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:04,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:04,791 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) [2022-03-01 17:12:04,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-01 17:12:04,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:12:04,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:04,809 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:04,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:05,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:05,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94327311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:05,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:05,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:05,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184414913] [2022-03-01 17:12:05,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:05,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:05,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:05,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:05,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:05,864 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) [2022-03-01 17:12:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:09,673 INFO L93 Difference]: Finished difference Result 706 states and 1445 transitions. [2022-03-01 17:12:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-01 17:12:09,673 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 [2022-03-01 17:12:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:09,674 INFO L225 Difference]: With dead ends: 706 [2022-03-01 17:12:09,674 INFO L226 Difference]: Without dead ends: 703 [2022-03-01 17:12:09,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5031 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2285, Invalid=14745, Unknown=0, NotChecked=0, Total=17030 [2022-03-01 17:12:09,676 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 310 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:09,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 627 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:12:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-03-01 17:12:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 349. [2022-03-01 17:12:09,680 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) [2022-03-01 17:12:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-03-01 17:12:09,681 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-03-01 17:12:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:09,681 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-03-01 17:12:09,681 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) [2022-03-01 17:12:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-03-01 17:12:09,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:09,681 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:09,681 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] [2022-03-01 17:12:09,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-03-01 17:12:09,882 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 [2022-03-01 17:12:09,882 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:09,882 INFO L85 PathProgramCache]: Analyzing trace with hash -134877002, now seen corresponding path program 81 times [2022-03-01 17:12:09,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:09,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399036823] [2022-03-01 17:12:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:09,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:10,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:10,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399036823] [2022-03-01 17:12:10,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399036823] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:10,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640373955] [2022-03-01 17:12:10,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:12:10,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:10,095 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) [2022-03-01 17:12:10,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-01 17:12:10,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:12:10,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:10,113 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:10,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:10,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:11,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640373955] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:11,158 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:11,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:11,158 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440924703] [2022-03-01 17:12:11,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:11,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:11,158 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:11,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:11,159 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) [2022-03-01 17:12:13,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:13,409 INFO L93 Difference]: Finished difference Result 651 states and 1316 transitions. [2022-03-01 17:12:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-01 17:12:13,409 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 [2022-03-01 17:12:13,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:13,410 INFO L225 Difference]: With dead ends: 651 [2022-03-01 17:12:13,410 INFO L226 Difference]: Without dead ends: 648 [2022-03-01 17:12:13,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2445 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1214, Invalid=8292, Unknown=0, NotChecked=0, Total=9506 [2022-03-01 17:12:13,410 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 250 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-03-01 17:12:13,411 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] [2022-03-01 17:12:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-03-01 17:12:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 345. [2022-03-01 17:12:13,415 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) [2022-03-01 17:12:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 775 transitions. [2022-03-01 17:12:13,415 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 775 transitions. Word has length 21 [2022-03-01 17:12:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:13,415 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 775 transitions. [2022-03-01 17:12:13,415 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) [2022-03-01 17:12:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 775 transitions. [2022-03-01 17:12:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:13,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:13,416 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] [2022-03-01 17:12:13,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-03-01 17:12:13,616 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 [2022-03-01 17:12:13,616 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1863683918, now seen corresponding path program 82 times [2022-03-01 17:12:13,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:13,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004872960] [2022-03-01 17:12:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:13,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:13,819 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:13,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004872960] [2022-03-01 17:12:13,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004872960] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:13,819 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133453353] [2022-03-01 17:12:13,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:12:13,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:13,821 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) [2022-03-01 17:12:13,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-01 17:12:13,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:12:13,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:13,840 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:13,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:14,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:14,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133453353] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:14,906 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:14,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:14,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561449785] [2022-03-01 17:12:14,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:14,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:14,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2014, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:14,907 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) [2022-03-01 17:12:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:19,049 INFO L93 Difference]: Finished difference Result 747 states and 1517 transitions. [2022-03-01 17:12:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-01 17:12:19,049 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 [2022-03-01 17:12:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:19,050 INFO L225 Difference]: With dead ends: 747 [2022-03-01 17:12:19,050 INFO L226 Difference]: Without dead ends: 741 [2022-03-01 17:12:19,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5429 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2452, Invalid=15638, Unknown=0, NotChecked=0, Total=18090 [2022-03-01 17:12:19,052 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:19,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 548 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:12:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-03-01 17:12:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 349. [2022-03-01 17:12:19,056 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) [2022-03-01 17:12:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-03-01 17:12:19,056 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-03-01 17:12:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:19,056 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-03-01 17:12:19,057 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) [2022-03-01 17:12:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-03-01 17:12:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:19,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:19,057 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] [2022-03-01 17:12:19,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-01 17:12:19,258 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 [2022-03-01 17:12:19,258 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:19,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:19,258 INFO L85 PathProgramCache]: Analyzing trace with hash 817716644, now seen corresponding path program 83 times [2022-03-01 17:12:19,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:19,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608607277] [2022-03-01 17:12:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:19,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:19,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608607277] [2022-03-01 17:12:19,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608607277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:19,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002847980] [2022-03-01 17:12:19,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:12:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:19,459 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) [2022-03-01 17:12:19,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-01 17:12:19,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:12:19,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:19,478 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:19,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:19,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:20,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002847980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:20,519 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:20,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:20,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114201541] [2022-03-01 17:12:20,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:20,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:20,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2007, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:20,520 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) [2022-03-01 17:12:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:24,142 INFO L93 Difference]: Finished difference Result 707 states and 1430 transitions. [2022-03-01 17:12:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-01 17:12:24,142 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 [2022-03-01 17:12:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:24,143 INFO L225 Difference]: With dead ends: 707 [2022-03-01 17:12:24,143 INFO L226 Difference]: Without dead ends: 701 [2022-03-01 17:12:24,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4384 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2129, Invalid=13123, Unknown=0, NotChecked=0, Total=15252 [2022-03-01 17:12:24,144 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:24,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 714 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:12:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-01 17:12:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 351. [2022-03-01 17:12:24,150 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) [2022-03-01 17:12:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-03-01 17:12:24,151 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-03-01 17:12:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:24,151 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-03-01 17:12:24,151 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) [2022-03-01 17:12:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-03-01 17:12:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:24,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:24,152 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] [2022-03-01 17:12:24,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-01 17:12:24,355 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 [2022-03-01 17:12:24,355 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash -100233546, now seen corresponding path program 84 times [2022-03-01 17:12:24,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:24,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704875380] [2022-03-01 17:12:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:24,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:24,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704875380] [2022-03-01 17:12:24,553 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704875380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:24,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245640173] [2022-03-01 17:12:24,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:12:24,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:24,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:24,560 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) [2022-03-01 17:12:24,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-01 17:12:24,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:12:24,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:24,579 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:24,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:25,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:25,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245640173] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:25,635 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:25,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:25,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232749871] [2022-03-01 17:12:25,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:25,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:25,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:25,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:25,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:25,636 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) [2022-03-01 17:12:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:30,108 INFO L93 Difference]: Finished difference Result 734 states and 1491 transitions. [2022-03-01 17:12:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-01 17:12:30,109 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 [2022-03-01 17:12:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:30,110 INFO L225 Difference]: With dead ends: 734 [2022-03-01 17:12:30,110 INFO L226 Difference]: Without dead ends: 728 [2022-03-01 17:12:30,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6254 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2781, Invalid=17525, Unknown=0, NotChecked=0, Total=20306 [2022-03-01 17:12:30,111 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:30,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 685 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:12:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-03-01 17:12:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 342. [2022-03-01 17:12:30,115 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) [2022-03-01 17:12:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 769 transitions. [2022-03-01 17:12:30,116 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 769 transitions. Word has length 21 [2022-03-01 17:12:30,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:30,116 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 769 transitions. [2022-03-01 17:12:30,116 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) [2022-03-01 17:12:30,116 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 769 transitions. [2022-03-01 17:12:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:30,116 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:30,116 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] [2022-03-01 17:12:30,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-03-01 17:12:30,317 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 [2022-03-01 17:12:30,317 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1701538496, now seen corresponding path program 85 times [2022-03-01 17:12:30,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:30,317 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660783534] [2022-03-01 17:12:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:30,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:30,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:30,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660783534] [2022-03-01 17:12:30,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660783534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:30,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742785427] [2022-03-01 17:12:30,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:12:30,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:30,512 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) [2022-03-01 17:12:30,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-01 17:12:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:30,530 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:30,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:31,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:31,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742785427] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:31,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:31,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:31,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770652001] [2022-03-01 17:12:31,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:31,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:31,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:31,573 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) [2022-03-01 17:12:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:34,842 INFO L93 Difference]: Finished difference Result 699 states and 1387 transitions. [2022-03-01 17:12:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-01 17:12:34,842 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 [2022-03-01 17:12:34,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:34,843 INFO L225 Difference]: With dead ends: 699 [2022-03-01 17:12:34,843 INFO L226 Difference]: Without dead ends: 696 [2022-03-01 17:12:34,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3520 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1520, Invalid=11136, Unknown=0, NotChecked=0, Total=12656 [2022-03-01 17:12:34,844 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 [2022-03-01 17:12:34,844 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] [2022-03-01 17:12:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-03-01 17:12:34,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 348. [2022-03-01 17:12:34,848 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) [2022-03-01 17:12:34,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 782 transitions. [2022-03-01 17:12:34,848 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 782 transitions. Word has length 21 [2022-03-01 17:12:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:34,849 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 782 transitions. [2022-03-01 17:12:34,849 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) [2022-03-01 17:12:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 782 transitions. [2022-03-01 17:12:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:34,849 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:34,849 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] [2022-03-01 17:12:34,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-03-01 17:12:35,049 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 [2022-03-01 17:12:35,050 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1701254094, now seen corresponding path program 86 times [2022-03-01 17:12:35,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:35,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189964980] [2022-03-01 17:12:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:35,247 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:35,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189964980] [2022-03-01 17:12:35,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189964980] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:35,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094714088] [2022-03-01 17:12:35,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:12:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:35,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:35,249 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) [2022-03-01 17:12:35,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-01 17:12:35,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:12:35,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:35,267 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:35,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:35,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:36,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094714088] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:36,317 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:36,317 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:36,317 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807855685] [2022-03-01 17:12:36,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:36,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:36,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:36,318 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) [2022-03-01 17:12:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:39,343 INFO L93 Difference]: Finished difference Result 705 states and 1397 transitions. [2022-03-01 17:12:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-01 17:12:39,343 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 [2022-03-01 17:12:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:39,344 INFO L225 Difference]: With dead ends: 705 [2022-03-01 17:12:39,344 INFO L226 Difference]: Without dead ends: 702 [2022-03-01 17:12:39,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1425, Invalid=10131, Unknown=0, NotChecked=0, Total=11556 [2022-03-01 17:12:39,345 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:39,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 721 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:12:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-03-01 17:12:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 346. [2022-03-01 17:12:39,349 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) [2022-03-01 17:12:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 778 transitions. [2022-03-01 17:12:39,350 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 778 transitions. Word has length 21 [2022-03-01 17:12:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:39,350 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 778 transitions. [2022-03-01 17:12:39,350 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) [2022-03-01 17:12:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 778 transitions. [2022-03-01 17:12:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:39,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:39,350 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] [2022-03-01 17:12:39,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-03-01 17:12:39,551 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 [2022-03-01 17:12:39,551 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:39,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:39,551 INFO L85 PathProgramCache]: Analyzing trace with hash 738030638, now seen corresponding path program 87 times [2022-03-01 17:12:39,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:39,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536082847] [2022-03-01 17:12:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:39,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:39,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:39,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536082847] [2022-03-01 17:12:39,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536082847] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:39,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956666215] [2022-03-01 17:12:39,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:12:39,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:39,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:39,751 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) [2022-03-01 17:12:39,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-01 17:12:39,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:12:39,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:39,769 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:40,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:40,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956666215] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:40,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:40,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:40,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136614691] [2022-03-01 17:12:40,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:40,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:40,818 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:40,818 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) [2022-03-01 17:12:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:44,913 INFO L93 Difference]: Finished difference Result 738 states and 1475 transitions. [2022-03-01 17:12:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 17:12:44,914 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 [2022-03-01 17:12:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:44,915 INFO L225 Difference]: With dead ends: 738 [2022-03-01 17:12:44,915 INFO L226 Difference]: Without dead ends: 735 [2022-03-01 17:12:44,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4921 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2015, Invalid=14755, Unknown=0, NotChecked=0, Total=16770 [2022-03-01 17:12:44,916 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 377 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:44,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 666 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:12:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-01 17:12:44,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 352. [2022-03-01 17:12:44,920 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) [2022-03-01 17:12:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 790 transitions. [2022-03-01 17:12:44,921 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 790 transitions. Word has length 21 [2022-03-01 17:12:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:44,921 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 790 transitions. [2022-03-01 17:12:44,921 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) [2022-03-01 17:12:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 790 transitions. [2022-03-01 17:12:44,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:44,921 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:44,921 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] [2022-03-01 17:12:44,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-03-01 17:12:45,122 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 [2022-03-01 17:12:45,122 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash 730707818, now seen corresponding path program 88 times [2022-03-01 17:12:45,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:45,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974131461] [2022-03-01 17:12:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:45,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:45,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:45,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974131461] [2022-03-01 17:12:45,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974131461] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:45,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60821006] [2022-03-01 17:12:45,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:12:45,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:45,312 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) [2022-03-01 17:12:45,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-01 17:12:45,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:12:45,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:45,330 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:45,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:45,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:46,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60821006] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:46,370 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:46,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:12:46,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438268800] [2022-03-01 17:12:46,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:46,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:12:46,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:12:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:12:46,371 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) [2022-03-01 17:12:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:49,670 INFO L93 Difference]: Finished difference Result 766 states and 1531 transitions. [2022-03-01 17:12:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-01 17:12:49,670 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 [2022-03-01 17:12:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:49,671 INFO L225 Difference]: With dead ends: 766 [2022-03-01 17:12:49,671 INFO L226 Difference]: Without dead ends: 759 [2022-03-01 17:12:49,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4131 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1869, Invalid=12411, Unknown=0, NotChecked=0, Total=14280 [2022-03-01 17:12:49,672 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 [2022-03-01 17:12:49,672 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] [2022-03-01 17:12:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-03-01 17:12:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 350. [2022-03-01 17:12:49,677 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) [2022-03-01 17:12:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 787 transitions. [2022-03-01 17:12:49,677 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 787 transitions. Word has length 21 [2022-03-01 17:12:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:49,677 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 787 transitions. [2022-03-01 17:12:49,678 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) [2022-03-01 17:12:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 787 transitions. [2022-03-01 17:12:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:49,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:49,678 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] [2022-03-01 17:12:49,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-03-01 17:12:49,878 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 [2022-03-01 17:12:49,879 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:49,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1941700242, now seen corresponding path program 89 times [2022-03-01 17:12:49,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:49,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282882921] [2022-03-01 17:12:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:49,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:50,076 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:50,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282882921] [2022-03-01 17:12:50,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282882921] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:50,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085385567] [2022-03-01 17:12:50,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:12:50,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:50,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:50,077 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) [2022-03-01 17:12:50,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-01 17:12:50,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:12:50,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:50,097 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:50,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:50,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:51,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085385567] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:51,148 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:51,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:51,148 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482967768] [2022-03-01 17:12:51,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:51,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:51,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:51,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:51,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:51,149 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) [2022-03-01 17:12:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:12:54,787 INFO L93 Difference]: Finished difference Result 721 states and 1431 transitions. [2022-03-01 17:12:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 17:12:54,787 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 [2022-03-01 17:12:54,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:12:54,788 INFO L225 Difference]: With dead ends: 721 [2022-03-01 17:12:54,788 INFO L226 Difference]: Without dead ends: 718 [2022-03-01 17:12:54,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1662, Invalid=11678, Unknown=0, NotChecked=0, Total=13340 [2022-03-01 17:12:54,789 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 317 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:12:54,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 822 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:12:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-03-01 17:12:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 352. [2022-03-01 17:12:54,794 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) [2022-03-01 17:12:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 792 transitions. [2022-03-01 17:12:54,794 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 792 transitions. Word has length 21 [2022-03-01 17:12:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:12:54,794 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 792 transitions. [2022-03-01 17:12:54,794 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) [2022-03-01 17:12:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 792 transitions. [2022-03-01 17:12:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:12:54,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:12:54,795 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] [2022-03-01 17:12:54,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-03-01 17:12:54,995 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 [2022-03-01 17:12:54,995 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:12:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:12:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash 497584490, now seen corresponding path program 90 times [2022-03-01 17:12:54,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:12:54,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968088137] [2022-03-01 17:12:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:12:54,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:12:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:12:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:55,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:12:55,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968088137] [2022-03-01 17:12:55,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968088137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:12:55,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671594720] [2022-03-01 17:12:55,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:12:55,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:12:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:12:55,202 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) [2022-03-01 17:12:55,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-01 17:12:55,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:12:55,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:12:55,221 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:12:55,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:12:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:55,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:12:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:12:56,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671594720] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:12:56,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:12:56,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:12:56,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439604905] [2022-03-01 17:12:56,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:12:56,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:12:56,274 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:12:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:12:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:12:56,274 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) [2022-03-01 17:13:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:00,662 INFO L93 Difference]: Finished difference Result 758 states and 1509 transitions. [2022-03-01 17:13:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 17:13:00,662 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 [2022-03-01 17:13:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:00,663 INFO L225 Difference]: With dead ends: 758 [2022-03-01 17:13:00,663 INFO L226 Difference]: Without dead ends: 755 [2022-03-01 17:13:00,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5130 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2064, Invalid=15228, Unknown=0, NotChecked=0, Total=17292 [2022-03-01 17:13:00,664 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 462 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-03-01 17:13:00,664 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] [2022-03-01 17:13:00,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-03-01 17:13:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 362. [2022-03-01 17:13:00,669 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) [2022-03-01 17:13:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 813 transitions. [2022-03-01 17:13:00,670 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 813 transitions. Word has length 21 [2022-03-01 17:13:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:00,670 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 813 transitions. [2022-03-01 17:13:00,670 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) [2022-03-01 17:13:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 813 transitions. [2022-03-01 17:13:00,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:00,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:00,671 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] [2022-03-01 17:13:00,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-01 17:13:00,871 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 [2022-03-01 17:13:00,871 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:00,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:00,872 INFO L85 PathProgramCache]: Analyzing trace with hash 490261670, now seen corresponding path program 91 times [2022-03-01 17:13:00,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:00,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693158767] [2022-03-01 17:13:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:00,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:01,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:01,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693158767] [2022-03-01 17:13:01,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693158767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:01,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046600730] [2022-03-01 17:13:01,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:13:01,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:01,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:01,072 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) [2022-03-01 17:13:01,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-01 17:13:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:01,091 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:01,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:01,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:02,104 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046600730] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:02,104 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:02,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:13:02,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855439225] [2022-03-01 17:13:02,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:02,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:13:02,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:02,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:13:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:13:02,106 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) [2022-03-01 17:13:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:05,626 INFO L93 Difference]: Finished difference Result 785 states and 1568 transitions. [2022-03-01 17:13:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-01 17:13:05,627 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 [2022-03-01 17:13:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:05,628 INFO L225 Difference]: With dead ends: 785 [2022-03-01 17:13:05,628 INFO L226 Difference]: Without dead ends: 778 [2022-03-01 17:13:05,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1986, Invalid=13020, Unknown=0, NotChecked=0, Total=15006 [2022-03-01 17:13:05,629 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 487 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:13:05,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 678 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:13:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-01 17:13:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 362. [2022-03-01 17:13:05,634 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) [2022-03-01 17:13:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 814 transitions. [2022-03-01 17:13:05,635 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 814 transitions. Word has length 21 [2022-03-01 17:13:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:05,635 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 814 transitions. [2022-03-01 17:13:05,635 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) [2022-03-01 17:13:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 814 transitions. [2022-03-01 17:13:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:05,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:05,636 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] [2022-03-01 17:13:05,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-03-01 17:13:05,839 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 [2022-03-01 17:13:05,839 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1241303402, now seen corresponding path program 92 times [2022-03-01 17:13:05,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:05,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915839028] [2022-03-01 17:13:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:06,073 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:06,073 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915839028] [2022-03-01 17:13:06,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915839028] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:06,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096372202] [2022-03-01 17:13:06,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:13:06,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:06,076 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) [2022-03-01 17:13:06,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-01 17:13:06,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:13:06,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:06,096 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:06,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:06,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:07,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096372202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:07,152 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:07,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:13:07,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712598120] [2022-03-01 17:13:07,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:07,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:13:07,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:07,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:13:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:13:07,153 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) [2022-03-01 17:13:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:13,857 INFO L93 Difference]: Finished difference Result 822 states and 1645 transitions. [2022-03-01 17:13:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-01 17:13:13,857 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 [2022-03-01 17:13:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:13,858 INFO L225 Difference]: With dead ends: 822 [2022-03-01 17:13:13,858 INFO L226 Difference]: Without dead ends: 819 [2022-03-01 17:13:13,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9444 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3457, Invalid=25273, Unknown=0, NotChecked=0, Total=28730 [2022-03-01 17:13:13,860 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 494 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-03-01 17:13:13,860 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] [2022-03-01 17:13:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-01 17:13:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 368. [2022-03-01 17:13:13,864 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) [2022-03-01 17:13:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 828 transitions. [2022-03-01 17:13:13,865 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 828 transitions. Word has length 21 [2022-03-01 17:13:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:13,865 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 828 transitions. [2022-03-01 17:13:13,865 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) [2022-03-01 17:13:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 828 transitions. [2022-03-01 17:13:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:13,866 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:13,866 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] [2022-03-01 17:13:13,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-03-01 17:13:14,066 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 [2022-03-01 17:13:14,066 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:14,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1233980582, now seen corresponding path program 93 times [2022-03-01 17:13:14,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:14,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689834942] [2022-03-01 17:13:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:14,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:14,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689834942] [2022-03-01 17:13:14,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689834942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:14,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295745380] [2022-03-01 17:13:14,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:13:14,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:14,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:14,262 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) [2022-03-01 17:13:14,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-01 17:13:14,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:13:14,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:14,285 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:14,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:14,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:15,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295745380] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:15,310 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:15,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:13:15,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250753297] [2022-03-01 17:13:15,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:15,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:13:15,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:13:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:13:15,311 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) [2022-03-01 17:13:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:21,103 INFO L93 Difference]: Finished difference Result 859 states and 1714 transitions. [2022-03-01 17:13:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-01 17:13:21,104 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 [2022-03-01 17:13:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:21,105 INFO L225 Difference]: With dead ends: 859 [2022-03-01 17:13:21,105 INFO L226 Difference]: Without dead ends: 852 [2022-03-01 17:13:21,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8479 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3292, Invalid=22468, Unknown=0, NotChecked=0, Total=25760 [2022-03-01 17:13:21,107 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 554 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:13:21,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 792 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 17:13:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-03-01 17:13:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 372. [2022-03-01 17:13:21,112 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) [2022-03-01 17:13:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 842 transitions. [2022-03-01 17:13:21,112 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 842 transitions. Word has length 21 [2022-03-01 17:13:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:21,113 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 842 transitions. [2022-03-01 17:13:21,113 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) [2022-03-01 17:13:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 842 transitions. [2022-03-01 17:13:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:21,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:21,113 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] [2022-03-01 17:13:21,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-03-01 17:13:21,314 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 [2022-03-01 17:13:21,314 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:21,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:21,315 INFO L85 PathProgramCache]: Analyzing trace with hash -949697370, now seen corresponding path program 94 times [2022-03-01 17:13:21,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:21,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916399923] [2022-03-01 17:13:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:21,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:21,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:21,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916399923] [2022-03-01 17:13:21,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916399923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:21,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971699173] [2022-03-01 17:13:21,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:13:21,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:21,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:21,514 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) [2022-03-01 17:13:21,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-01 17:13:21,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:13:21,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:21,533 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:21,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:22,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:22,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971699173] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:22,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:22,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:13:22,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733192784] [2022-03-01 17:13:22,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:22,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:13:22,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:13:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1934, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:13:22,551 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) [2022-03-01 17:13:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:27,512 INFO L93 Difference]: Finished difference Result 892 states and 1792 transitions. [2022-03-01 17:13:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-01 17:13:27,513 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 [2022-03-01 17:13:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:27,514 INFO L225 Difference]: With dead ends: 892 [2022-03-01 17:13:27,514 INFO L226 Difference]: Without dead ends: 885 [2022-03-01 17:13:27,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7071 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3072, Invalid=18980, Unknown=0, NotChecked=0, Total=22052 [2022-03-01 17:13:27,515 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 516 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:13:27,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 703 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:13:27,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-03-01 17:13:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 364. [2022-03-01 17:13:27,521 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) [2022-03-01 17:13:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 816 transitions. [2022-03-01 17:13:27,521 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 816 transitions. Word has length 21 [2022-03-01 17:13:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:27,521 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 816 transitions. [2022-03-01 17:13:27,522 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) [2022-03-01 17:13:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 816 transitions. [2022-03-01 17:13:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:27,522 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:27,522 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] [2022-03-01 17:13:27,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-03-01 17:13:27,722 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 [2022-03-01 17:13:27,723 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1117677524, now seen corresponding path program 95 times [2022-03-01 17:13:27,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:27,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871264976] [2022-03-01 17:13:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:27,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:27,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871264976] [2022-03-01 17:13:27,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871264976] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:27,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193176559] [2022-03-01 17:13:27,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:13:27,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:27,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:27,921 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) [2022-03-01 17:13:27,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-01 17:13:27,945 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:13:27,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:27,946 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:27,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:28,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:28,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193176559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:28,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:28,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:13:28,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091176276] [2022-03-01 17:13:28,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:28,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:13:28,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:13:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:13:28,995 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) [2022-03-01 17:13:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:33,566 INFO L93 Difference]: Finished difference Result 768 states and 1535 transitions. [2022-03-01 17:13:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-01 17:13:33,566 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 [2022-03-01 17:13:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:33,567 INFO L225 Difference]: With dead ends: 768 [2022-03-01 17:13:33,567 INFO L226 Difference]: Without dead ends: 765 [2022-03-01 17:13:33,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5264 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2399, Invalid=15423, Unknown=0, NotChecked=0, Total=17822 [2022-03-01 17:13:33,568 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 508 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:13:33,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 615 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:13:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-03-01 17:13:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 365. [2022-03-01 17:13:33,573 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) [2022-03-01 17:13:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 818 transitions. [2022-03-01 17:13:33,573 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 818 transitions. Word has length 21 [2022-03-01 17:13:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:33,573 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 818 transitions. [2022-03-01 17:13:33,573 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) [2022-03-01 17:13:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 818 transitions. [2022-03-01 17:13:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:33,574 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:33,574 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] [2022-03-01 17:13:33,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-01 17:13:33,774 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 [2022-03-01 17:13:33,775 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1110354704, now seen corresponding path program 96 times [2022-03-01 17:13:33,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:33,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161368460] [2022-03-01 17:13:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:33,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:33,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:33,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161368460] [2022-03-01 17:13:33,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161368460] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:33,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179421928] [2022-03-01 17:13:33,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:13:33,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:33,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:33,971 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) [2022-03-01 17:13:33,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-01 17:13:33,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:13:33,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:33,990 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:33,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:34,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:34,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179421928] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:34,995 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:34,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:13:34,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905166846] [2022-03-01 17:13:34,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:34,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:13:34,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:13:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:13:34,996 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) [2022-03-01 17:13:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:38,561 INFO L93 Difference]: Finished difference Result 785 states and 1572 transitions. [2022-03-01 17:13:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-01 17:13:38,562 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 [2022-03-01 17:13:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:38,563 INFO L225 Difference]: With dead ends: 785 [2022-03-01 17:13:38,563 INFO L226 Difference]: Without dead ends: 778 [2022-03-01 17:13:38,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4339 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2114, Invalid=12892, Unknown=0, NotChecked=0, Total=15006 [2022-03-01 17:13:38,564 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 491 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:13:38,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 688 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:13:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-01 17:13:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 370. [2022-03-01 17:13:38,569 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) [2022-03-01 17:13:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 834 transitions. [2022-03-01 17:13:38,569 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 834 transitions. Word has length 21 [2022-03-01 17:13:38,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:38,569 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 834 transitions. [2022-03-01 17:13:38,569 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) [2022-03-01 17:13:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 834 transitions. [2022-03-01 17:13:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:38,570 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:38,570 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] [2022-03-01 17:13:38,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-03-01 17:13:38,770 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 [2022-03-01 17:13:38,771 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1073323248, now seen corresponding path program 97 times [2022-03-01 17:13:38,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:38,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312351767] [2022-03-01 17:13:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:38,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:38,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:38,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312351767] [2022-03-01 17:13:38,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312351767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:38,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493514395] [2022-03-01 17:13:38,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:13:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:38,965 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) [2022-03-01 17:13:38,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-01 17:13:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:38,984 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:38,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:39,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:39,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493514395] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:39,990 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:39,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:13:39,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017023639] [2022-03-01 17:13:39,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:39,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:13:39,990 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:39,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:13:39,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:13:39,991 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) [2022-03-01 17:13:44,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:44,054 INFO L93 Difference]: Finished difference Result 816 states and 1646 transitions. [2022-03-01 17:13:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 17:13:44,055 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 [2022-03-01 17:13:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:44,056 INFO L225 Difference]: With dead ends: 816 [2022-03-01 17:13:44,056 INFO L226 Difference]: Without dead ends: 802 [2022-03-01 17:13:44,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5099 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2409, Invalid=14621, Unknown=0, NotChecked=0, Total=17030 [2022-03-01 17:13:44,056 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 442 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-03-01 17:13:44,057 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] [2022-03-01 17:13:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-03-01 17:13:44,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 366. [2022-03-01 17:13:44,061 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) [2022-03-01 17:13:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 820 transitions. [2022-03-01 17:13:44,061 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 820 transitions. Word has length 21 [2022-03-01 17:13:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:44,062 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 820 transitions. [2022-03-01 17:13:44,062 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) [2022-03-01 17:13:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 820 transitions. [2022-03-01 17:13:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:44,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:44,062 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] [2022-03-01 17:13:44,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-03-01 17:13:44,262 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 [2022-03-01 17:13:44,263 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 199727334, now seen corresponding path program 98 times [2022-03-01 17:13:44,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:44,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705050144] [2022-03-01 17:13:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:44,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:44,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705050144] [2022-03-01 17:13:44,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705050144] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:44,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722257907] [2022-03-01 17:13:44,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:13:44,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:44,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:44,464 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) [2022-03-01 17:13:44,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-01 17:13:44,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:13:44,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:44,485 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:44,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:44,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:45,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722257907] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:45,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:45,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:13:45,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689754047] [2022-03-01 17:13:45,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:45,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:13:45,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:13:45,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:13:45,540 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) [2022-03-01 17:13:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:50,558 INFO L93 Difference]: Finished difference Result 768 states and 1558 transitions. [2022-03-01 17:13:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-01 17:13:50,558 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 [2022-03-01 17:13:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:50,559 INFO L225 Difference]: With dead ends: 768 [2022-03-01 17:13:50,559 INFO L226 Difference]: Without dead ends: 765 [2022-03-01 17:13:50,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6865 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2843, Invalid=19209, Unknown=0, NotChecked=0, Total=22052 [2022-03-01 17:13:50,560 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:13:50,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 680 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:13:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-03-01 17:13:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 369. [2022-03-01 17:13:50,565 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) [2022-03-01 17:13:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 827 transitions. [2022-03-01 17:13:50,565 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 827 transitions. Word has length 21 [2022-03-01 17:13:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:50,565 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 827 transitions. [2022-03-01 17:13:50,565 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) [2022-03-01 17:13:50,565 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 827 transitions. [2022-03-01 17:13:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:50,566 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:50,566 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] [2022-03-01 17:13:50,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-03-01 17:13:50,767 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 [2022-03-01 17:13:50,767 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:50,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:50,767 INFO L85 PathProgramCache]: Analyzing trace with hash 192404514, now seen corresponding path program 99 times [2022-03-01 17:13:50,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:50,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400672975] [2022-03-01 17:13:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:50,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:50,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400672975] [2022-03-01 17:13:50,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400672975] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:50,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926384873] [2022-03-01 17:13:50,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:13:50,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:50,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:50,968 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) [2022-03-01 17:13:50,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-01 17:13:50,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-01 17:13:50,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:50,988 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:50,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:51,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:52,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926384873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:52,003 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:52,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:13:52,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075871405] [2022-03-01 17:13:52,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:52,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:13:52,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:13:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:13:52,004 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) [2022-03-01 17:13:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:13:56,092 INFO L93 Difference]: Finished difference Result 792 states and 1603 transitions. [2022-03-01 17:13:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-01 17:13:56,092 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 [2022-03-01 17:13:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:13:56,093 INFO L225 Difference]: With dead ends: 792 [2022-03-01 17:13:56,093 INFO L226 Difference]: Without dead ends: 785 [2022-03-01 17:13:56,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5847 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2625, Invalid=16281, Unknown=0, NotChecked=0, Total=18906 [2022-03-01 17:13:56,094 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 385 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:13:56,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 684 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:13:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-03-01 17:13:56,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 370. [2022-03-01 17:13:56,099 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) [2022-03-01 17:13:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 834 transitions. [2022-03-01 17:13:56,100 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 834 transitions. Word has length 21 [2022-03-01 17:13:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:13:56,100 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 834 transitions. [2022-03-01 17:13:56,100 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) [2022-03-01 17:13:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 834 transitions. [2022-03-01 17:13:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:13:56,100 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:13:56,100 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] [2022-03-01 17:13:56,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-03-01 17:13:56,301 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 [2022-03-01 17:13:56,301 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:13:56,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:13:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1991273438, now seen corresponding path program 100 times [2022-03-01 17:13:56,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:13:56,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126600773] [2022-03-01 17:13:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:13:56,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:13:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:13:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:56,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:13:56,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126600773] [2022-03-01 17:13:56,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126600773] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:13:56,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935382352] [2022-03-01 17:13:56,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:13:56,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:13:56,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:13:56,498 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) [2022-03-01 17:13:56,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-01 17:13:56,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:13:56,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:13:56,518 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:13:56,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:13:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:57,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:13:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:13:57,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935382352] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:13:57,533 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:13:57,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:13:57,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652127581] [2022-03-01 17:13:57,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:13:57,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:13:57,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:13:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:13:57,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1925, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:13:57,534 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) [2022-03-01 17:14:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:00,987 INFO L93 Difference]: Finished difference Result 803 states and 1623 transitions. [2022-03-01 17:14:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-01 17:14:00,987 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 [2022-03-01 17:14:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:00,988 INFO L225 Difference]: With dead ends: 803 [2022-03-01 17:14:00,988 INFO L226 Difference]: Without dead ends: 796 [2022-03-01 17:14:00,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4179 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2116, Invalid=12404, Unknown=0, NotChecked=0, Total=14520 [2022-03-01 17:14:00,989 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 [2022-03-01 17:14:00,989 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] [2022-03-01 17:14:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-03-01 17:14:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 360. [2022-03-01 17:14:00,994 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) [2022-03-01 17:14:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 808 transitions. [2022-03-01 17:14:00,994 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 808 transitions. Word has length 21 [2022-03-01 17:14:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:00,995 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 808 transitions. [2022-03-01 17:14:00,995 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) [2022-03-01 17:14:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 808 transitions. [2022-03-01 17:14:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:00,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:00,996 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] [2022-03-01 17:14:01,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-01 17:14:01,219 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 [2022-03-01 17:14:01,220 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1407810710, now seen corresponding path program 101 times [2022-03-01 17:14:01,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:01,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735490612] [2022-03-01 17:14:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:01,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:01,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:01,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735490612] [2022-03-01 17:14:01,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735490612] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:01,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785375643] [2022-03-01 17:14:01,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:14:01,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:01,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:01,414 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) [2022-03-01 17:14:01,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-01 17:14:01,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:14:01,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:01,441 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:01,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:02,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785375643] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:02,500 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:02,500 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:14:02,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510861796] [2022-03-01 17:14:02,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:02,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:14:02,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:14:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:14:02,501 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) [2022-03-01 17:14:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:05,085 INFO L93 Difference]: Finished difference Result 702 states and 1405 transitions. [2022-03-01 17:14:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 17:14:05,085 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 [2022-03-01 17:14:05,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:05,086 INFO L225 Difference]: With dead ends: 702 [2022-03-01 17:14:05,086 INFO L226 Difference]: Without dead ends: 699 [2022-03-01 17:14:05,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1382, Invalid=9330, Unknown=0, NotChecked=0, Total=10712 [2022-03-01 17:14:05,087 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 270 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:14:05,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 576 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:14:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-03-01 17:14:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 358. [2022-03-01 17:14:05,091 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) [2022-03-01 17:14:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 803 transitions. [2022-03-01 17:14:05,092 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 803 transitions. Word has length 21 [2022-03-01 17:14:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:05,092 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 803 transitions. [2022-03-01 17:14:05,092 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) [2022-03-01 17:14:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 803 transitions. [2022-03-01 17:14:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:05,092 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:05,092 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] [2022-03-01 17:14:05,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-03-01 17:14:05,293 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 [2022-03-01 17:14:05,293 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:05,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:05,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1158349670, now seen corresponding path program 102 times [2022-03-01 17:14:05,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:05,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009747595] [2022-03-01 17:14:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:05,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:05,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:05,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009747595] [2022-03-01 17:14:05,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009747595] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:05,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005252440] [2022-03-01 17:14:05,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:14:05,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:05,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:05,492 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) [2022-03-01 17:14:05,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-01 17:14:05,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-01 17:14:05,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:05,511 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:05,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:06,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:06,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005252440] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:06,566 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:06,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:14:06,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257016838] [2022-03-01 17:14:06,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:06,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:14:06,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:14:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2013, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:14:06,567 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) [2022-03-01 17:14:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:11,822 INFO L93 Difference]: Finished difference Result 826 states and 1654 transitions. [2022-03-01 17:14:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-01 17:14:11,822 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 [2022-03-01 17:14:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:11,823 INFO L225 Difference]: With dead ends: 826 [2022-03-01 17:14:11,824 INFO L226 Difference]: Without dead ends: 820 [2022-03-01 17:14:11,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7041 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3081, Invalid=19269, Unknown=0, NotChecked=0, Total=22350 [2022-03-01 17:14:11,825 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 516 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-03-01 17:14:11,825 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] [2022-03-01 17:14:11,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-03-01 17:14:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 363. [2022-03-01 17:14:11,829 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) [2022-03-01 17:14:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 815 transitions. [2022-03-01 17:14:11,830 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 815 transitions. Word has length 21 [2022-03-01 17:14:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:11,830 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 815 transitions. [2022-03-01 17:14:11,830 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) [2022-03-01 17:14:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 815 transitions. [2022-03-01 17:14:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:11,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:11,831 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] [2022-03-01 17:14:11,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-01 17:14:12,031 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 [2022-03-01 17:14:12,031 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1151026850, now seen corresponding path program 103 times [2022-03-01 17:14:12,031 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:12,031 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013866235] [2022-03-01 17:14:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:12,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:12,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013866235] [2022-03-01 17:14:12,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013866235] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:12,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790023662] [2022-03-01 17:14:12,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:14:12,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:12,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:12,226 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) [2022-03-01 17:14:12,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-01 17:14:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:12,245 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:12,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:12,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:13,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790023662] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:13,265 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:13,266 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:14:13,266 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697362138] [2022-03-01 17:14:13,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:13,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:14:13,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:14:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:14:13,266 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) [2022-03-01 17:14:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:17,950 INFO L93 Difference]: Finished difference Result 869 states and 1735 transitions. [2022-03-01 17:14:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-01 17:14:17,950 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 [2022-03-01 17:14:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:17,951 INFO L225 Difference]: With dead ends: 869 [2022-03-01 17:14:17,952 INFO L226 Difference]: Without dead ends: 855 [2022-03-01 17:14:17,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6800 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3026, Invalid=18436, Unknown=0, NotChecked=0, Total=21462 [2022-03-01 17:14:17,952 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:14:17,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 629 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:14:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-03-01 17:14:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 372. [2022-03-01 17:14:17,957 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) [2022-03-01 17:14:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 841 transitions. [2022-03-01 17:14:17,958 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 841 transitions. Word has length 21 [2022-03-01 17:14:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:17,958 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 841 transitions. [2022-03-01 17:14:17,958 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) [2022-03-01 17:14:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 841 transitions. [2022-03-01 17:14:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:17,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:17,959 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] [2022-03-01 17:14:17,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-03-01 17:14:18,159 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 [2022-03-01 17:14:18,159 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1032651102, now seen corresponding path program 104 times [2022-03-01 17:14:18,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:18,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858191055] [2022-03-01 17:14:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:18,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:18,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858191055] [2022-03-01 17:14:18,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858191055] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:18,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130072029] [2022-03-01 17:14:18,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:14:18,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:18,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:18,359 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) [2022-03-01 17:14:18,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-01 17:14:18,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:14:18,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:18,392 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:18,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:18,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:19,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130072029] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:19,420 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:19,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:14:19,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828117045] [2022-03-01 17:14:19,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:19,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:14:19,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:14:19,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:14:19,420 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) [2022-03-01 17:14:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:24,661 INFO L93 Difference]: Finished difference Result 887 states and 1768 transitions. [2022-03-01 17:14:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-03-01 17:14:24,661 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 [2022-03-01 17:14:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:24,662 INFO L225 Difference]: With dead ends: 887 [2022-03-01 17:14:24,662 INFO L226 Difference]: Without dead ends: 866 [2022-03-01 17:14:24,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8015 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3428, Invalid=21378, Unknown=0, NotChecked=0, Total=24806 [2022-03-01 17:14:24,663 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 435 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-01 17:14:24,664 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] [2022-03-01 17:14:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-03-01 17:14:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 368. [2022-03-01 17:14:24,669 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) [2022-03-01 17:14:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 827 transitions. [2022-03-01 17:14:24,669 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 827 transitions. Word has length 21 [2022-03-01 17:14:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:24,670 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 827 transitions. [2022-03-01 17:14:24,670 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) [2022-03-01 17:14:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 827 transitions. [2022-03-01 17:14:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:24,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:24,670 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] [2022-03-01 17:14:24,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-03-01 17:14:24,870 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 [2022-03-01 17:14:24,871 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1672621730, now seen corresponding path program 105 times [2022-03-01 17:14:24,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:24,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587776698] [2022-03-01 17:14:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:25,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:25,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587776698] [2022-03-01 17:14:25,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587776698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:25,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692238356] [2022-03-01 17:14:25,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:14:25,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:25,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:25,084 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) [2022-03-01 17:14:25,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-01 17:14:25,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:14:25,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:25,103 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:25,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:25,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:26,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692238356] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:26,121 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:26,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:14:26,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363931909] [2022-03-01 17:14:26,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:26,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:14:26,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:26,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:14:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:14:26,122 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) [2022-03-01 17:14:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:29,580 INFO L93 Difference]: Finished difference Result 786 states and 1583 transitions. [2022-03-01 17:14:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 17:14:29,580 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 [2022-03-01 17:14:29,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:29,581 INFO L225 Difference]: With dead ends: 786 [2022-03-01 17:14:29,581 INFO L226 Difference]: Without dead ends: 772 [2022-03-01 17:14:29,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2250, Invalid=13752, Unknown=0, NotChecked=0, Total=16002 [2022-03-01 17:14:29,582 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 [2022-03-01 17:14:29,582 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] [2022-03-01 17:14:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-03-01 17:14:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 366. [2022-03-01 17:14:29,587 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) [2022-03-01 17:14:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 821 transitions. [2022-03-01 17:14:29,587 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 821 transitions. Word has length 21 [2022-03-01 17:14:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:29,587 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 821 transitions. [2022-03-01 17:14:29,587 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) [2022-03-01 17:14:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 821 transitions. [2022-03-01 17:14:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:29,588 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:29,588 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] [2022-03-01 17:14:29,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-03-01 17:14:29,788 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 [2022-03-01 17:14:29,789 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:29,789 INFO L85 PathProgramCache]: Analyzing trace with hash -455217064, now seen corresponding path program 106 times [2022-03-01 17:14:29,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:29,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706475935] [2022-03-01 17:14:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:29,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:29,994 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:29,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706475935] [2022-03-01 17:14:29,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706475935] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:29,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287976321] [2022-03-01 17:14:29,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:14:29,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:29,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:29,995 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) [2022-03-01 17:14:29,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-01 17:14:30,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:14:30,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:30,015 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:30,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:31,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287976321] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:31,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:31,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:14:31,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063881198] [2022-03-01 17:14:31,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:31,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:14:31,074 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:14:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:14:31,075 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) [2022-03-01 17:14:35,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:35,738 INFO L93 Difference]: Finished difference Result 804 states and 1591 transitions. [2022-03-01 17:14:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-01 17:14:35,739 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 [2022-03-01 17:14:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:35,740 INFO L225 Difference]: With dead ends: 804 [2022-03-01 17:14:35,740 INFO L226 Difference]: Without dead ends: 798 [2022-03-01 17:14:35,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5804 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2683, Invalid=16499, Unknown=0, NotChecked=0, Total=19182 [2022-03-01 17:14:35,741 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 497 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:14:35,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 712 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:14:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-03-01 17:14:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 367. [2022-03-01 17:14:35,745 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) [2022-03-01 17:14:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 823 transitions. [2022-03-01 17:14:35,746 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 823 transitions. Word has length 21 [2022-03-01 17:14:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:35,746 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 823 transitions. [2022-03-01 17:14:35,746 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) [2022-03-01 17:14:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 823 transitions. [2022-03-01 17:14:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:35,747 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:35,747 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] [2022-03-01 17:14:35,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-01 17:14:35,947 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 [2022-03-01 17:14:35,947 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash -462539884, now seen corresponding path program 107 times [2022-03-01 17:14:35,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:35,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664729518] [2022-03-01 17:14:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:36,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:36,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664729518] [2022-03-01 17:14:36,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664729518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:36,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893104552] [2022-03-01 17:14:36,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:14:36,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:36,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:36,146 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) [2022-03-01 17:14:36,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-01 17:14:36,165 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:14:36,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:36,166 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:36,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:36,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:37,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893104552] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:37,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:37,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:14:37,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591334731] [2022-03-01 17:14:37,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:37,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:14:37,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:14:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:14:37,185 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) [2022-03-01 17:14:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:40,758 INFO L93 Difference]: Finished difference Result 823 states and 1636 transitions. [2022-03-01 17:14:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-01 17:14:40,758 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 [2022-03-01 17:14:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:40,759 INFO L225 Difference]: With dead ends: 823 [2022-03-01 17:14:40,759 INFO L226 Difference]: Without dead ends: 809 [2022-03-01 17:14:40,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4733 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2364, Invalid=13638, Unknown=0, NotChecked=0, Total=16002 [2022-03-01 17:14:40,760 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 475 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:14:40,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 667 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:14:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-03-01 17:14:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 372. [2022-03-01 17:14:40,766 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) [2022-03-01 17:14:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 839 transitions. [2022-03-01 17:14:40,766 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 839 transitions. Word has length 21 [2022-03-01 17:14:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:40,766 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 839 transitions. [2022-03-01 17:14:40,766 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) [2022-03-01 17:14:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 839 transitions. [2022-03-01 17:14:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:40,767 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:40,767 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] [2022-03-01 17:14:40,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-01 17:14:40,967 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 [2022-03-01 17:14:40,967 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:40,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1648749460, now seen corresponding path program 108 times [2022-03-01 17:14:40,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:40,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146365527] [2022-03-01 17:14:40,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:40,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:41,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:41,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146365527] [2022-03-01 17:14:41,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146365527] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:41,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990810013] [2022-03-01 17:14:41,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:14:41,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:41,161 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) [2022-03-01 17:14:41,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-01 17:14:41,180 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:14:41,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:41,181 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:41,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:41,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:42,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990810013] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:42,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:42,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:14:42,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910610927] [2022-03-01 17:14:42,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:42,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:14:42,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:14:42,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:14:42,192 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) [2022-03-01 17:14:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:46,334 INFO L93 Difference]: Finished difference Result 856 states and 1717 transitions. [2022-03-01 17:14:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-01 17:14:46,334 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 [2022-03-01 17:14:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:46,335 INFO L225 Difference]: With dead ends: 856 [2022-03-01 17:14:46,335 INFO L226 Difference]: Without dead ends: 835 [2022-03-01 17:14:46,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5837 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2808, Invalid=16374, Unknown=0, NotChecked=0, Total=19182 [2022-03-01 17:14:46,337 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 473 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:14:46,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 641 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:14:46,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-03-01 17:14:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 370. [2022-03-01 17:14:46,342 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) [2022-03-01 17:14:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 829 transitions. [2022-03-01 17:14:46,349 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 829 transitions. Word has length 21 [2022-03-01 17:14:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:46,349 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 829 transitions. [2022-03-01 17:14:46,349 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) [2022-03-01 17:14:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 829 transitions. [2022-03-01 17:14:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:46,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:46,350 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] [2022-03-01 17:14:46,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-03-01 17:14:46,550 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 [2022-03-01 17:14:46,550 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1373167254, now seen corresponding path program 109 times [2022-03-01 17:14:46,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:46,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846470567] [2022-03-01 17:14:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:46,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:46,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846470567] [2022-03-01 17:14:46,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846470567] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:46,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509392489] [2022-03-01 17:14:46,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:14:46,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:46,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:46,748 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) [2022-03-01 17:14:46,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-01 17:14:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:46,766 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:46,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:47,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:47,819 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509392489] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:47,819 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:47,819 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:14:47,819 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548604925] [2022-03-01 17:14:47,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:47,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:14:47,820 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:14:47,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:14:47,820 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) [2022-03-01 17:14:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:53,312 INFO L93 Difference]: Finished difference Result 810 states and 1630 transitions. [2022-03-01 17:14:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-03-01 17:14:53,312 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 [2022-03-01 17:14:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:53,313 INFO L225 Difference]: With dead ends: 810 [2022-03-01 17:14:53,313 INFO L226 Difference]: Without dead ends: 804 [2022-03-01 17:14:53,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7481 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3173, Invalid=20389, Unknown=0, NotChecked=0, Total=23562 [2022-03-01 17:14:53,314 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 420 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-01 17:14:53,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 805 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-01 17:14:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-01 17:14:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 374. [2022-03-01 17:14:53,319 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) [2022-03-01 17:14:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 839 transitions. [2022-03-01 17:14:53,319 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 839 transitions. Word has length 21 [2022-03-01 17:14:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:53,319 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 839 transitions. [2022-03-01 17:14:53,319 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) [2022-03-01 17:14:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 839 transitions. [2022-03-01 17:14:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:53,320 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:53,320 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] [2022-03-01 17:14:53,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-03-01 17:14:53,520 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 [2022-03-01 17:14:53,520 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1380490074, now seen corresponding path program 110 times [2022-03-01 17:14:53,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:53,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770471370] [2022-03-01 17:14:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:53,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:53,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770471370] [2022-03-01 17:14:53,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770471370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:53,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759242775] [2022-03-01 17:14:53,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:14:53,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:53,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:53,715 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) [2022-03-01 17:14:53,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-01 17:14:53,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:14:53,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:53,734 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:53,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:14:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:54,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:14:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:54,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759242775] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:14:54,749 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:14:54,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:14:54,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269348541] [2022-03-01 17:14:54,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:14:54,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:14:54,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:14:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:14:54,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:14:54,750 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) [2022-03-01 17:14:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:14:59,093 INFO L93 Difference]: Finished difference Result 850 states and 1707 transitions. [2022-03-01 17:14:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-01 17:14:59,093 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 [2022-03-01 17:14:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:14:59,094 INFO L225 Difference]: With dead ends: 850 [2022-03-01 17:14:59,094 INFO L226 Difference]: Without dead ends: 836 [2022-03-01 17:14:59,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6389 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2947, Invalid=17359, Unknown=0, NotChecked=0, Total=20306 [2022-03-01 17:14:59,096 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 444 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:14:59,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 694 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:14:59,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-03-01 17:14:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 376. [2022-03-01 17:14:59,101 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) [2022-03-01 17:14:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 849 transitions. [2022-03-01 17:14:59,101 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 849 transitions. Word has length 21 [2022-03-01 17:14:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:14:59,101 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 849 transitions. [2022-03-01 17:14:59,101 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) [2022-03-01 17:14:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 849 transitions. [2022-03-01 17:14:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:14:59,102 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:14:59,102 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] [2022-03-01 17:14:59,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-03-01 17:14:59,302 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 [2022-03-01 17:14:59,302 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:14:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:14:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash 730799270, now seen corresponding path program 111 times [2022-03-01 17:14:59,303 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:14:59,303 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24971302] [2022-03-01 17:14:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:14:59,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:14:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:14:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:14:59,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:14:59,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24971302] [2022-03-01 17:14:59,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24971302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:14:59,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958827289] [2022-03-01 17:14:59,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:14:59,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:14:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:14:59,506 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) [2022-03-01 17:14:59,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-01 17:14:59,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:14:59,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:14:59,527 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:14:59,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:00,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:00,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958827289] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:00,536 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:00,536 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:15:00,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079153511] [2022-03-01 17:15:00,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:00,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:15:00,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:15:00,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1904, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:15:00,537 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) [2022-03-01 17:15:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:04,136 INFO L93 Difference]: Finished difference Result 843 states and 1698 transitions. [2022-03-01 17:15:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-01 17:15:04,136 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 [2022-03-01 17:15:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:04,137 INFO L225 Difference]: With dead ends: 843 [2022-03-01 17:15:04,137 INFO L226 Difference]: Without dead ends: 829 [2022-03-01 17:15:04,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5089 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2577, Invalid=14453, Unknown=0, NotChecked=0, Total=17030 [2022-03-01 17:15:04,138 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 432 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:04,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 531 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:15:04,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-03-01 17:15:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 354. [2022-03-01 17:15:04,143 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) [2022-03-01 17:15:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 795 transitions. [2022-03-01 17:15:04,143 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 795 transitions. Word has length 21 [2022-03-01 17:15:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:04,143 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 795 transitions. [2022-03-01 17:15:04,144 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) [2022-03-01 17:15:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 795 transitions. [2022-03-01 17:15:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:04,144 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:04,144 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] [2022-03-01 17:15:04,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-03-01 17:15:04,344 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 [2022-03-01 17:15:04,345 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:04,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:04,345 INFO L85 PathProgramCache]: Analyzing trace with hash -70243496, now seen corresponding path program 112 times [2022-03-01 17:15:04,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:04,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70297045] [2022-03-01 17:15:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:04,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:04,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:04,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70297045] [2022-03-01 17:15:04,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70297045] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:04,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141678199] [2022-03-01 17:15:04,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:15:04,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:04,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:04,544 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) [2022-03-01 17:15:04,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-01 17:15:04,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:15:04,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:04,562 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:04,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:05,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:05,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141678199] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:05,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:05,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:15:05,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872708070] [2022-03-01 17:15:05,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:05,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:15:05,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:15:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:15:05,639 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) [2022-03-01 17:15:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:08,338 INFO L93 Difference]: Finished difference Result 709 states and 1418 transitions. [2022-03-01 17:15:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 17:15:08,339 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 [2022-03-01 17:15:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:08,340 INFO L225 Difference]: With dead ends: 709 [2022-03-01 17:15:08,340 INFO L226 Difference]: Without dead ends: 706 [2022-03-01 17:15:08,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2902 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1422, Invalid=9290, Unknown=0, NotChecked=0, Total=10712 [2022-03-01 17:15:08,341 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:08,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 608 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:15:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-01 17:15:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 352. [2022-03-01 17:15:08,345 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) [2022-03-01 17:15:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 791 transitions. [2022-03-01 17:15:08,345 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 791 transitions. Word has length 21 [2022-03-01 17:15:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:08,345 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 791 transitions. [2022-03-01 17:15:08,345 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) [2022-03-01 17:15:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 791 transitions. [2022-03-01 17:15:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:08,346 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:08,346 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] [2022-03-01 17:15:08,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-03-01 17:15:08,546 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 [2022-03-01 17:15:08,547 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:08,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1182207148, now seen corresponding path program 113 times [2022-03-01 17:15:08,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:08,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998357258] [2022-03-01 17:15:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:08,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:08,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:08,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998357258] [2022-03-01 17:15:08,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998357258] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:08,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400267895] [2022-03-01 17:15:08,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:15:08,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:08,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:08,742 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) [2022-03-01 17:15:08,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-01 17:15:08,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:15:08,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:08,763 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:08,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:09,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:09,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400267895] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:09,815 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:09,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:15:09,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569125558] [2022-03-01 17:15:09,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:09,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:15:09,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:15:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:15:09,816 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) [2022-03-01 17:15:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:15,301 INFO L93 Difference]: Finished difference Result 796 states and 1607 transitions. [2022-03-01 17:15:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-01 17:15:15,301 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 [2022-03-01 17:15:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:15,302 INFO L225 Difference]: With dead ends: 796 [2022-03-01 17:15:15,302 INFO L226 Difference]: Without dead ends: 793 [2022-03-01 17:15:15,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7438 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3025, Invalid=20231, Unknown=0, NotChecked=0, Total=23256 [2022-03-01 17:15:15,303 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 451 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:15,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 720 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 17:15:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-03-01 17:15:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 355. [2022-03-01 17:15:15,308 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) [2022-03-01 17:15:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 798 transitions. [2022-03-01 17:15:15,308 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 798 transitions. Word has length 21 [2022-03-01 17:15:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:15,309 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 798 transitions. [2022-03-01 17:15:15,309 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) [2022-03-01 17:15:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 798 transitions. [2022-03-01 17:15:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:15,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:15,309 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] [2022-03-01 17:15:15,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-03-01 17:15:15,511 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 [2022-03-01 17:15:15,511 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1189529968, now seen corresponding path program 114 times [2022-03-01 17:15:15,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:15,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182508906] [2022-03-01 17:15:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:15,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:15,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182508906] [2022-03-01 17:15:15,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182508906] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:15,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102804328] [2022-03-01 17:15:15,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:15:15,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:15,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:15,725 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) [2022-03-01 17:15:15,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-01 17:15:15,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:15:15,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:15,745 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:15,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:16,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:16,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102804328] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:16,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:16,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:15:16,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909458459] [2022-03-01 17:15:16,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:16,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:15:16,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:16,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:15:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:15:16,749 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) [2022-03-01 17:15:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:21,520 INFO L93 Difference]: Finished difference Result 837 states and 1676 transitions. [2022-03-01 17:15:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-01 17:15:21,521 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 [2022-03-01 17:15:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:21,522 INFO L225 Difference]: With dead ends: 837 [2022-03-01 17:15:21,522 INFO L226 Difference]: Without dead ends: 830 [2022-03-01 17:15:21,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6892 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2931, Invalid=18531, Unknown=0, NotChecked=0, Total=21462 [2022-03-01 17:15:21,523 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:21,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 738 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-01 17:15:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-03-01 17:15:21,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 356. [2022-03-01 17:15:21,530 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) [2022-03-01 17:15:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 805 transitions. [2022-03-01 17:15:21,531 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 805 transitions. Word has length 21 [2022-03-01 17:15:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:21,531 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 805 transitions. [2022-03-01 17:15:21,531 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) [2022-03-01 17:15:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 805 transitions. [2022-03-01 17:15:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:21,532 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:21,532 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] [2022-03-01 17:15:21,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-03-01 17:15:21,747 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 [2022-03-01 17:15:21,747 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash 921759376, now seen corresponding path program 115 times [2022-03-01 17:15:21,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:21,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412420560] [2022-03-01 17:15:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:21,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:21,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412420560] [2022-03-01 17:15:21,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412420560] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:21,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548398336] [2022-03-01 17:15:21,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:15:21,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:21,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:21,945 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) [2022-03-01 17:15:21,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-01 17:15:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:21,964 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:21,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:22,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:22,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548398336] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:22,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:22,967 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:15:22,967 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855307419] [2022-03-01 17:15:22,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:22,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:15:22,967 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:15:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:15:22,968 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) [2022-03-01 17:15:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:27,387 INFO L93 Difference]: Finished difference Result 861 states and 1734 transitions. [2022-03-01 17:15:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-01 17:15:27,387 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 [2022-03-01 17:15:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:27,389 INFO L225 Difference]: With dead ends: 861 [2022-03-01 17:15:27,389 INFO L226 Difference]: Without dead ends: 854 [2022-03-01 17:15:27,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6461 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2922, Invalid=17384, Unknown=0, NotChecked=0, Total=20306 [2022-03-01 17:15:27,390 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 [2022-03-01 17:15:27,390 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] [2022-03-01 17:15:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-03-01 17:15:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 350. [2022-03-01 17:15:27,395 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) [2022-03-01 17:15:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 785 transitions. [2022-03-01 17:15:27,395 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 785 transitions. Word has length 21 [2022-03-01 17:15:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:27,396 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 785 transitions. [2022-03-01 17:15:27,396 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) [2022-03-01 17:15:27,396 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 785 transitions. [2022-03-01 17:15:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:27,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:27,396 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] [2022-03-01 17:15:27,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-03-01 17:15:27,596 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 [2022-03-01 17:15:27,597 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:27,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:27,597 INFO L85 PathProgramCache]: Analyzing trace with hash -799486760, now seen corresponding path program 116 times [2022-03-01 17:15:27,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:27,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111815561] [2022-03-01 17:15:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:27,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:27,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:27,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111815561] [2022-03-01 17:15:27,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111815561] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:27,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70488675] [2022-03-01 17:15:27,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:15:27,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:27,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:27,792 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) [2022-03-01 17:15:27,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-03-01 17:15:27,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:15:27,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:27,810 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:27,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:28,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:28,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70488675] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:28,856 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:28,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:15:28,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262839273] [2022-03-01 17:15:28,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:28,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:15:28,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:15:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1999, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:15:28,857 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) [2022-03-01 17:15:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:32,603 INFO L93 Difference]: Finished difference Result 755 states and 1517 transitions. [2022-03-01 17:15:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 17:15:32,603 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 [2022-03-01 17:15:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:32,604 INFO L225 Difference]: With dead ends: 755 [2022-03-01 17:15:32,604 INFO L226 Difference]: Without dead ends: 752 [2022-03-01 17:15:32,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4351 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2105, Invalid=12901, Unknown=0, NotChecked=0, Total=15006 [2022-03-01 17:15:32,605 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 355 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:32,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 644 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:15:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-03-01 17:15:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 351. [2022-03-01 17:15:32,609 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) [2022-03-01 17:15:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 787 transitions. [2022-03-01 17:15:32,610 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 787 transitions. Word has length 21 [2022-03-01 17:15:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:32,610 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 787 transitions. [2022-03-01 17:15:32,610 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) [2022-03-01 17:15:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 787 transitions. [2022-03-01 17:15:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:32,611 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:32,611 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] [2022-03-01 17:15:32,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-03-01 17:15:32,811 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 [2022-03-01 17:15:32,811 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -806809580, now seen corresponding path program 117 times [2022-03-01 17:15:32,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:32,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271425827] [2022-03-01 17:15:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:33,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:33,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271425827] [2022-03-01 17:15:33,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271425827] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:33,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608432250] [2022-03-01 17:15:33,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:15:33,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:33,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:33,024 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) [2022-03-01 17:15:33,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-03-01 17:15:33,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:15:33,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:33,045 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:33,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:33,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:34,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608432250] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:34,060 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:34,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:15:34,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499776991] [2022-03-01 17:15:34,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:15:34,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:15:34,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1904, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:15:34,062 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) [2022-03-01 17:15:36,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:36,951 INFO L93 Difference]: Finished difference Result 773 states and 1553 transitions. [2022-03-01 17:15:36,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-01 17:15:36,951 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 [2022-03-01 17:15:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:36,952 INFO L225 Difference]: With dead ends: 773 [2022-03-01 17:15:36,952 INFO L226 Difference]: Without dead ends: 766 [2022-03-01 17:15:36,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3735 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1899, Invalid=11211, Unknown=0, NotChecked=0, Total=13110 [2022-03-01 17:15:36,953 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 444 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:36,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 560 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 17:15:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-03-01 17:15:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 356. [2022-03-01 17:15:36,958 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) [2022-03-01 17:15:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 803 transitions. [2022-03-01 17:15:36,958 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 803 transitions. Word has length 21 [2022-03-01 17:15:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:36,959 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 803 transitions. [2022-03-01 17:15:36,959 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) [2022-03-01 17:15:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 803 transitions. [2022-03-01 17:15:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:36,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:36,959 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] [2022-03-01 17:15:36,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-03-01 17:15:37,159 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 [2022-03-01 17:15:37,160 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1304479764, now seen corresponding path program 118 times [2022-03-01 17:15:37,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:37,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361757623] [2022-03-01 17:15:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:37,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:37,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:37,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361757623] [2022-03-01 17:15:37,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361757623] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:37,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339474614] [2022-03-01 17:15:37,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:15:37,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:37,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:37,401 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) [2022-03-01 17:15:37,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-03-01 17:15:37,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:15:37,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:37,420 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:37,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:37,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:38,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339474614] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:38,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:38,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:15:38,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062036882] [2022-03-01 17:15:38,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:38,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:15:38,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:15:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:15:38,438 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) [2022-03-01 17:15:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:41,894 INFO L93 Difference]: Finished difference Result 813 states and 1643 transitions. [2022-03-01 17:15:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 17:15:41,895 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 [2022-03-01 17:15:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:41,896 INFO L225 Difference]: With dead ends: 813 [2022-03-01 17:15:41,896 INFO L226 Difference]: Without dead ends: 806 [2022-03-01 17:15:41,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5004 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2415, Invalid=14097, Unknown=0, NotChecked=0, Total=16512 [2022-03-01 17:15:41,897 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:41,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 566 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:15:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-03-01 17:15:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 352. [2022-03-01 17:15:41,901 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) [2022-03-01 17:15:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 789 transitions. [2022-03-01 17:15:41,902 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 789 transitions. Word has length 21 [2022-03-01 17:15:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:41,902 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 789 transitions. [2022-03-01 17:15:41,902 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) [2022-03-01 17:15:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 789 transitions. [2022-03-01 17:15:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:41,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:41,902 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] [2022-03-01 17:15:41,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-03-01 17:15:42,102 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 [2022-03-01 17:15:42,103 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:42,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1717436950, now seen corresponding path program 119 times [2022-03-01 17:15:42,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:42,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529305645] [2022-03-01 17:15:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:42,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:42,300 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:42,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529305645] [2022-03-01 17:15:42,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529305645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:42,300 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875897311] [2022-03-01 17:15:42,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:15:42,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:42,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:42,301 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) [2022-03-01 17:15:42,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-03-01 17:15:42,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 17:15:42,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:42,321 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:42,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:42,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:43,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875897311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:43,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:43,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:15:43,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257106790] [2022-03-01 17:15:43,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:43,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:15:43,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:15:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2002, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:15:43,354 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) [2022-03-01 17:15:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:47,808 INFO L93 Difference]: Finished difference Result 763 states and 1547 transitions. [2022-03-01 17:15:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-01 17:15:47,808 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 [2022-03-01 17:15:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:47,809 INFO L225 Difference]: With dead ends: 763 [2022-03-01 17:15:47,809 INFO L226 Difference]: Without dead ends: 760 [2022-03-01 17:15:47,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2629, Invalid=16831, Unknown=0, NotChecked=0, Total=19460 [2022-03-01 17:15:47,810 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 407 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-03-01 17:15:47,810 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] [2022-03-01 17:15:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-03-01 17:15:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 355. [2022-03-01 17:15:47,815 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) [2022-03-01 17:15:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 796 transitions. [2022-03-01 17:15:47,815 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 796 transitions. Word has length 21 [2022-03-01 17:15:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:47,815 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 796 transitions. [2022-03-01 17:15:47,815 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) [2022-03-01 17:15:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 796 transitions. [2022-03-01 17:15:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:47,816 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:47,816 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] [2022-03-01 17:15:47,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-03-01 17:15:48,016 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 [2022-03-01 17:15:48,017 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:48,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1724759770, now seen corresponding path program 120 times [2022-03-01 17:15:48,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:48,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877750811] [2022-03-01 17:15:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:48,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:48,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877750811] [2022-03-01 17:15:48,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877750811] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:48,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387378880] [2022-03-01 17:15:48,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:15:48,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:48,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:48,206 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) [2022-03-01 17:15:48,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-03-01 17:15:48,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:15:48,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:48,226 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:48,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:48,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:49,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387378880] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:49,217 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:49,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:15:49,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739633200] [2022-03-01 17:15:49,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:49,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:15:49,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:49,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:15:49,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:15:49,217 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) [2022-03-01 17:15:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:52,564 INFO L93 Difference]: Finished difference Result 787 states and 1590 transitions. [2022-03-01 17:15:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-01 17:15:52,565 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 [2022-03-01 17:15:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:52,566 INFO L225 Difference]: With dead ends: 787 [2022-03-01 17:15:52,566 INFO L226 Difference]: Without dead ends: 780 [2022-03-01 17:15:52,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5012 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2369, Invalid=14143, Unknown=0, NotChecked=0, Total=16512 [2022-03-01 17:15:52,567 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 [2022-03-01 17:15:52,567 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] [2022-03-01 17:15:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-03-01 17:15:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 356. [2022-03-01 17:15:52,571 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) [2022-03-01 17:15:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 803 transitions. [2022-03-01 17:15:52,572 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 803 transitions. Word has length 21 [2022-03-01 17:15:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:52,572 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 803 transitions. [2022-03-01 17:15:52,572 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) [2022-03-01 17:15:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 803 transitions. [2022-03-01 17:15:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:52,572 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:52,572 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] [2022-03-01 17:15:52,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-03-01 17:15:52,773 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 [2022-03-01 17:15:52,773 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 386529574, now seen corresponding path program 121 times [2022-03-01 17:15:52,773 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:52,773 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726596564] [2022-03-01 17:15:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:52,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:52,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:52,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726596564] [2022-03-01 17:15:52,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726596564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:52,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169756790] [2022-03-01 17:15:52,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:15:52,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:52,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:52,970 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) [2022-03-01 17:15:52,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-03-01 17:15:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:52,990 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:52,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:53,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:54,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169756790] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:54,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:54,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:15:54,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976692308] [2022-03-01 17:15:54,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:54,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:15:54,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:15:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:15:54,005 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) [2022-03-01 17:15:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:15:57,126 INFO L93 Difference]: Finished difference Result 796 states and 1606 transitions. [2022-03-01 17:15:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-01 17:15:57,126 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 [2022-03-01 17:15:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:15:57,127 INFO L225 Difference]: With dead ends: 796 [2022-03-01 17:15:57,127 INFO L226 Difference]: Without dead ends: 789 [2022-03-01 17:15:57,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4153 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2179, Invalid=12101, Unknown=0, NotChecked=0, Total=14280 [2022-03-01 17:15:57,128 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-01 17:15:57,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 570 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-01 17:15:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-03-01 17:15:57,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 348. [2022-03-01 17:15:57,132 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) [2022-03-01 17:15:57,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 781 transitions. [2022-03-01 17:15:57,133 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 781 transitions. Word has length 21 [2022-03-01 17:15:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:15:57,133 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 781 transitions. [2022-03-01 17:15:57,133 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) [2022-03-01 17:15:57,133 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 781 transitions. [2022-03-01 17:15:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:15:57,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:15:57,133 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] [2022-03-01 17:15:57,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2022-03-01 17:15:57,334 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 [2022-03-01 17:15:57,334 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:15:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:15:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1799050412, now seen corresponding path program 122 times [2022-03-01 17:15:57,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:15:57,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187879847] [2022-03-01 17:15:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:15:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:15:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:15:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:57,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:15:57,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187879847] [2022-03-01 17:15:57,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187879847] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:15:57,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516661274] [2022-03-01 17:15:57,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:15:57,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:15:57,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:15:57,527 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) [2022-03-01 17:15:57,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-03-01 17:15:57,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:15:57,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:15:57,547 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:15:57,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:15:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:58,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:15:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:15:58,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516661274] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:15:58,590 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:15:58,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:15:58,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605619046] [2022-03-01 17:15:58,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:15:58,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:15:58,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:15:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:15:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:15:58,591 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) [2022-03-01 17:16:03,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:16:03,299 INFO L93 Difference]: Finished difference Result 812 states and 1640 transitions. [2022-03-01 17:16:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-01 17:16:03,300 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 [2022-03-01 17:16:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:16:03,301 INFO L225 Difference]: With dead ends: 812 [2022-03-01 17:16:03,301 INFO L226 Difference]: Without dead ends: 806 [2022-03-01 17:16:03,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6225 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2857, Invalid=17165, Unknown=0, NotChecked=0, Total=20022 [2022-03-01 17:16:03,302 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 443 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:16:03,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 604 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:16:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-03-01 17:16:03,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 353. [2022-03-01 17:16:03,306 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) [2022-03-01 17:16:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 793 transitions. [2022-03-01 17:16:03,307 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 793 transitions. Word has length 21 [2022-03-01 17:16:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:16:03,307 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 793 transitions. [2022-03-01 17:16:03,307 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) [2022-03-01 17:16:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 793 transitions. [2022-03-01 17:16:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:16:03,307 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:16:03,307 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] [2022-03-01 17:16:03,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-03-01 17:16:03,508 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 [2022-03-01 17:16:03,508 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:16:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:16:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1806373232, now seen corresponding path program 123 times [2022-03-01 17:16:03,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:16:03,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458773005] [2022-03-01 17:16:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:16:03,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:16:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:16:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:03,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:16:03,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458773005] [2022-03-01 17:16:03,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458773005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:16:03,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458784732] [2022-03-01 17:16:03,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:16:03,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:16:03,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:16:03,715 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) [2022-03-01 17:16:03,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-03-01 17:16:03,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 17:16:03,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:16:03,735 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:16:03,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:16:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:04,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:16:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:04,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458784732] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:16:04,754 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:16:04,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:16:04,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666515339] [2022-03-01 17:16:04,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:16:04,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:16:04,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:16:04,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:16:04,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1912, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:16:04,755 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) [2022-03-01 17:16:09,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:16:09,040 INFO L93 Difference]: Finished difference Result 863 states and 1737 transitions. [2022-03-01 17:16:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-01 17:16:09,040 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 [2022-03-01 17:16:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:16:09,042 INFO L225 Difference]: With dead ends: 863 [2022-03-01 17:16:09,042 INFO L226 Difference]: Without dead ends: 849 [2022-03-01 17:16:09,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6302 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2858, Invalid=17164, Unknown=0, NotChecked=0, Total=20022 [2022-03-01 17:16:09,043 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 [2022-03-01 17:16:09,043 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] [2022-03-01 17:16:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-03-01 17:16:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 362. [2022-03-01 17:16:09,050 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) [2022-03-01 17:16:09,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 819 transitions. [2022-03-01 17:16:09,051 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 819 transitions. Word has length 21 [2022-03-01 17:16:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:16:09,051 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 819 transitions. [2022-03-01 17:16:09,051 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) [2022-03-01 17:16:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 819 transitions. [2022-03-01 17:16:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:16:09,052 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:16:09,052 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] [2022-03-01 17:16:09,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-03-01 17:16:09,276 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 [2022-03-01 17:16:09,277 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:16:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:16:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 304916112, now seen corresponding path program 124 times [2022-03-01 17:16:09,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:16:09,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993432306] [2022-03-01 17:16:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:16:09,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:16:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:16:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:09,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:16:09,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993432306] [2022-03-01 17:16:09,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993432306] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:16:09,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239076485] [2022-03-01 17:16:09,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:16:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:16:09,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:16:09,477 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) [2022-03-01 17:16:09,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-03-01 17:16:09,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:16:09,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:16:09,496 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:16:09,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:16:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:09,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:16:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:10,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239076485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:16:10,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:16:10,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:16:10,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771529656] [2022-03-01 17:16:10,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:16:10,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:16:10,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:16:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:16:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:16:10,513 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) [2022-03-01 17:16:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:16:15,555 INFO L93 Difference]: Finished difference Result 898 states and 1794 transitions. [2022-03-01 17:16:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-03-01 17:16:15,555 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 [2022-03-01 17:16:15,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:16:15,556 INFO L225 Difference]: With dead ends: 898 [2022-03-01 17:16:15,556 INFO L226 Difference]: Without dead ends: 884 [2022-03-01 17:16:15,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7630 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3295, Invalid=20267, Unknown=0, NotChecked=0, Total=23562 [2022-03-01 17:16:15,557 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 459 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-01 17:16:15,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 722 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-01 17:16:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-03-01 17:16:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 358. [2022-03-01 17:16:15,562 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) [2022-03-01 17:16:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 805 transitions. [2022-03-01 17:16:15,563 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 805 transitions. Word has length 21 [2022-03-01 17:16:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:16:15,563 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 805 transitions. [2022-03-01 17:16:15,563 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) [2022-03-01 17:16:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 805 transitions. [2022-03-01 17:16:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:16:15,564 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:16:15,564 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] [2022-03-01 17:16:15,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-03-01 17:16:15,764 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 [2022-03-01 17:16:15,764 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:16:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:16:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1284778352, now seen corresponding path program 125 times [2022-03-01 17:16:15,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:16:15,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995500358] [2022-03-01 17:16:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:16:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:16:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:16:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:15,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:16:15,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995500358] [2022-03-01 17:16:15,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995500358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:16:15,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129651789] [2022-03-01 17:16:15,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:16:15,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:16:15,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:16:15,958 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) [2022-03-01 17:16:15,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-03-01 17:16:15,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:16:15,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:16:15,985 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:16:15,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:16:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:16,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:16:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:17,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129651789] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:16:17,000 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:16:17,000 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-01 17:16:17,000 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970334363] [2022-03-01 17:16:17,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:16:17,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-01 17:16:17,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:16:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-01 17:16:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2022-03-01 17:16:17,001 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) [2022-03-01 17:16:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:16:20,290 INFO L93 Difference]: Finished difference Result 792 states and 1593 transitions. [2022-03-01 17:16:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-01 17:16:20,291 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 [2022-03-01 17:16:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:16:20,292 INFO L225 Difference]: With dead ends: 792 [2022-03-01 17:16:20,292 INFO L226 Difference]: Without dead ends: 778 [2022-03-01 17:16:20,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2233, Invalid=13517, Unknown=0, NotChecked=0, Total=15750 [2022-03-01 17:16:20,293 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 [2022-03-01 17:16:20,293 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] [2022-03-01 17:16:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-01 17:16:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 356. [2022-03-01 17:16:20,297 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) [2022-03-01 17:16:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 799 transitions. [2022-03-01 17:16:20,297 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 799 transitions. Word has length 21 [2022-03-01 17:16:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:16:20,297 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 799 transitions. [2022-03-01 17:16:20,298 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) [2022-03-01 17:16:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 799 transitions. [2022-03-01 17:16:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:16:20,298 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:16:20,298 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] [2022-03-01 17:16:20,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-03-01 17:16:20,498 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 [2022-03-01 17:16:20,498 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:16:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:16:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash 882350150, now seen corresponding path program 126 times [2022-03-01 17:16:20,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:16:20,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024737313] [2022-03-01 17:16:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:16:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:16:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:16:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:20,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:16:20,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024737313] [2022-03-01 17:16:20,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024737313] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:16:20,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401001032] [2022-03-01 17:16:20,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:16:20,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:16:20,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:16:20,692 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) [2022-03-01 17:16:20,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-03-01 17:16:20,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-01 17:16:20,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:16:20,711 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:16:20,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:16:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:21,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:16:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:21,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401001032] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:16:21,756 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:16:21,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-03-01 17:16:21,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659725879] [2022-03-01 17:16:21,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:16:21,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-01 17:16:21,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:16:21,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-01 17:16:21,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2001, Unknown=0, NotChecked=0, Total=2256 [2022-03-01 17:16:21,757 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) [2022-03-01 17:16:25,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:16:25,464 INFO L93 Difference]: Finished difference Result 757 states and 1523 transitions. [2022-03-01 17:16:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-01 17:16:25,464 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 [2022-03-01 17:16:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:16:25,465 INFO L225 Difference]: With dead ends: 757 [2022-03-01 17:16:25,465 INFO L226 Difference]: Without dead ends: 754 [2022-03-01 17:16:25,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4319 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2142, Invalid=12864, Unknown=0, NotChecked=0, Total=15006 [2022-03-01 17:16:25,466 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 [2022-03-01 17:16:25,466 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] [2022-03-01 17:16:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-03-01 17:16:25,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 357. [2022-03-01 17:16:25,470 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) [2022-03-01 17:16:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 801 transitions. [2022-03-01 17:16:25,471 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 801 transitions. Word has length 21 [2022-03-01 17:16:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:16:25,471 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 801 transitions. [2022-03-01 17:16:25,471 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) [2022-03-01 17:16:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 801 transitions. [2022-03-01 17:16:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-01 17:16:25,471 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:16:25,471 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] [2022-03-01 17:16:25,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-03-01 17:16:25,672 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 [2022-03-01 17:16:25,672 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:16:25,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:16:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 875027330, now seen corresponding path program 127 times [2022-03-01 17:16:25,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:16:25,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666483724] [2022-03-01 17:16:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:16:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:16:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:16:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:16:25,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:16:25,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666483724] [2022-03-01 17:16:25,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666483724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:16:25,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29801718] [2022-03-01 17:16:25,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 17:16:25,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:16:25,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:16:25,872 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) [2022-03-01 17:16:25,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-03-01 17:16:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:16:25,892 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-01 17:16:25,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-03-01 17:16:25,977 WARN L244 SmtUtils]: Removed 5 from assertion stack [2022-03-01 17:16:25,978 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-01 17:16:25,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-03-01 17:16:26,002 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 [2022-03-01 17:16:26,025 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 17:16:26,179 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 [2022-03-01 17:16:26,179 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 4ms.. [2022-03-01 17:16:26,180 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 17:16:26,180 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 17:16:26,183 INFO L732 BasicCegarLoop]: Path program histogram: [127, 17, 17, 3] [2022-03-01 17:16:26,184 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:16:26,184 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:16:26,185 INFO L202 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:16:26 BasicIcfg [2022-03-01 17:16:26,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:16:26,186 INFO L158 Benchmark]: Toolchain (without parser) took 718158.44ms. Allocated memory was 191.9MB in the beginning and 272.6MB in the end (delta: 80.7MB). Free memory was 156.1MB in the beginning and 145.6MB in the end (delta: 10.6MB). Peak memory consumption was 91.7MB. Max. memory is 8.0GB. [2022-03-01 17:16:26,186 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 191.9MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:16:26,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.30ms. Allocated memory is still 191.9MB. Free memory was 156.1MB in the beginning and 154.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:16:26,186 INFO L158 Benchmark]: Boogie Preprocessor took 17.04ms. Allocated memory is still 191.9MB. Free memory was 154.5MB in the beginning and 153.6MB in the end (delta: 936.7kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 17:16:26,186 INFO L158 Benchmark]: RCFGBuilder took 207.97ms. Allocated memory is still 191.9MB. Free memory was 153.5MB in the beginning and 145.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-01 17:16:26,186 INFO L158 Benchmark]: TraceAbstraction took 717903.48ms. Allocated memory was 191.9MB in the beginning and 272.6MB in the end (delta: 80.7MB). Free memory was 144.7MB in the beginning and 145.6MB in the end (delta: -875.1kB). Peak memory consumption was 80.2MB. Max. memory is 8.0GB. [2022-03-01 17:16:26,186 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 0.12ms. Allocated memory is still 191.9MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.30ms. Allocated memory is still 191.9MB. Free memory was 156.1MB in the beginning and 154.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 17.04ms. Allocated memory is still 191.9MB. Free memory was 154.5MB in the beginning and 153.6MB in the end (delta: 936.7kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 207.97ms. Allocated memory is still 191.9MB. Free memory was 153.5MB in the beginning and 145.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 717903.48ms. Allocated memory was 191.9MB in the beginning and 272.6MB in the end (delta: 80.7MB). Free memory was 144.7MB in the beginning and 145.6MB in the end (delta: -875.1kB). Peak memory consumption was 80.2MB. 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 analyzing trace of length 22 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 4ms.. - 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 analyzing trace of length 22 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 4ms.. - 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 analyzing trace of length 22 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 4ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 717.8s, OverallIterations: 164, TraceHistogramMax: 2, PathProgramHistogramMax: 127, EmptinessCheckTime: 0.1s, AutomataDifference: 503.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59097 SdHoareTripleChecker+Valid, 106.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59097 mSDsluCounter, 104817 SdHoareTripleChecker+Invalid, 90.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 98109 mSDsCounter, 13891 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258178 IncrementalHoareTripleChecker+Invalid, 272069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13891 mSolverCounterUnsat, 7517 mSDtfsCounter, 258178 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19114 GetRequests, 1847 SyntacticMatches, 322 SemanticMatches, 16945 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609322 ImplicationChecksByTransitivity, 505.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=147, InterpolantAutomatonStates: 11061, 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, 163 MinimizatonAttempts, 50743 StatesRemovedByMinimization, 163 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 175.1s InterpolantComputationTime, 6573 NumberOfCodeBlocks, 6573 NumberOfCodeBlocksAsserted, 445 NumberOfCheckSat, 9354 ConstructedInterpolants, 0 QuantifiedInterpolants, 129600 SizeOfPredicates, 1716 NumberOfNonLiveVariables, 8000 ConjunctsInSsa, 4488 ConjunctsInUnsatCore, 483 InterpolantComputations, 3 PerfectInterpolantSequences, 0/882 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