/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.abstract-por-f0ea240 [2022-02-10 23:58:41,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:58:41,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:58:41,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:58:41,827 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 [2022-02-10 23:58:41,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:58:41,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:58:41,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:58:41,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:58:41,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:58:41,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:58:41,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:58:41,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:58:41,850 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:58:41,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:58:41,850 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:58:41,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:58:41,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:58:41,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:58:41,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:58:41,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:58:41,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:41,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:58:41,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:58:41,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:58:41,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:58:41,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:58:41,853 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:58:41,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:58:41,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:58:42,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:58:42,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:58:42,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:58:42,051 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 23:58:42,051 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 23:58:42,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl [2022-02-10 23:58:42,052 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/concurrent_mult.bpl' [2022-02-10 23:58:42,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:58:42,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 23:58:42,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:42,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:58:42,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:58:42,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,089 INFO L137 Inliner]: procedures = 2, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 23:58:42,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:42,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:58:42,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:58:42,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:58:42,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:58:42,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:58:42,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:58:42,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:58:42,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:42,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:42,130 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) [2022-02-10 23:58:42,136 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 [2022-02-10 23:58:42,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure mult given in one single declaration [2022-02-10 23:58:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-02-10 23:58:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-02-10 23:58:42,158 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 23:58:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:58:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:58:42,158 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 23:58:42,187 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:58:42,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:58:42,234 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:58:42,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:58:42,238 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 23:58:42,239 INFO L202 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:42 BoogieIcfgContainer [2022-02-10 23:58:42,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:58:42,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:58:42,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:58:42,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:58:42,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/2) ... [2022-02-10 23:58:42,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286db866 and model type concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:58:42, skipping insertion in model container [2022-02-10 23:58:42,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:42" (2/2) ... [2022-02-10 23:58:42,245 INFO L112 eAbstractionObserver]: Analyzing ICFG concurrent_mult.bpl [2022-02-10 23:58:42,249 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:58:42,249 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:58:42,249 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:58:42,249 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:58:42,293 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,293 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,293 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,294 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,294 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,294 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,294 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,294 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,294 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,295 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,295 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,295 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,295 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,295 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,295 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,296 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,296 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,296 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,296 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,296 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,296 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,296 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,297 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,297 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,298 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,298 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,298 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,298 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,299 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,299 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,299 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,299 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,299 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,299 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,300 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,301 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,301 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,304 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,305 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,306 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_z not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,306 WARN L322 ript$VariableManager]: TermVariable multThread1of1ForFork1_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:42,308 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-10 23:58:42,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:58:42,352 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, 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 [2022-02-10 23:58:42,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:58:42,363 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2022-02-10 23:58:42,386 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) [2022-02-10 23:58:42,389 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) [2022-02-10 23:58:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:42,395 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:42,396 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:42,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:42,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1077425939, now seen corresponding path program 1 times [2022-02-10 23:58:42,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:42,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786918932] [2022-02-10 23:58:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:42,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:42,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:42,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786918932] [2022-02-10 23:58:42,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786918932] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:42,688 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:42,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:42,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790615993] [2022-02-10 23:58:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:42,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:42,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:42,728 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) [2022-02-10 23:58:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:42,842 INFO L93 Difference]: Finished difference Result 115 states and 217 transitions. [2022-02-10 23:58:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:42,845 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 [2022-02-10 23:58:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:42,855 INFO L225 Difference]: With dead ends: 115 [2022-02-10 23:58:42,855 INFO L226 Difference]: Without dead ends: 112 [2022-02-10 23:58:42,857 INFO L933 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 [2022-02-10 23:58:42,864 INFO L934 BasicCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:42,865 INFO L935 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] [2022-02-10 23:58:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-02-10 23:58:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 77. [2022-02-10 23:58:42,915 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) [2022-02-10 23:58:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 147 transitions. [2022-02-10 23:58:42,922 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 147 transitions. Word has length 15 [2022-02-10 23:58:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:42,927 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 147 transitions. [2022-02-10 23:58:42,927 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) [2022-02-10 23:58:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 147 transitions. [2022-02-10 23:58:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:42,928 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:42,929 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:42,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:58:42,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash 219740701, now seen corresponding path program 2 times [2022-02-10 23:58:42,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:42,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008576007] [2022-02-10 23:58:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:42,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:43,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:43,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008576007] [2022-02-10 23:58:43,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008576007] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:43,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:43,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:43,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46331011] [2022-02-10 23:58:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:43,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:43,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:43,012 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) [2022-02-10 23:58:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:43,111 INFO L93 Difference]: Finished difference Result 143 states and 275 transitions. [2022-02-10 23:58:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:43,112 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 [2022-02-10 23:58:43,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:43,114 INFO L225 Difference]: With dead ends: 143 [2022-02-10 23:58:43,114 INFO L226 Difference]: Without dead ends: 136 [2022-02-10 23:58:43,114 INFO L933 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 [2022-02-10 23:58:43,115 INFO L934 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 [2022-02-10 23:58:43,115 INFO L935 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] [2022-02-10 23:58:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-02-10 23:58:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 89. [2022-02-10 23:58:43,123 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) [2022-02-10 23:58:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 173 transitions. [2022-02-10 23:58:43,123 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 173 transitions. Word has length 15 [2022-02-10 23:58:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:43,123 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 173 transitions. [2022-02-10 23:58:43,124 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) [2022-02-10 23:58:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 173 transitions. [2022-02-10 23:58:43,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 23:58:43,124 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:43,124 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:43,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:58:43,125 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:43,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1754585729, now seen corresponding path program 3 times [2022-02-10 23:58:43,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:43,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811180646] [2022-02-10 23:58:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:43,180 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:43,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811180646] [2022-02-10 23:58:43,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811180646] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:43,182 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:43,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:43,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078297342] [2022-02-10 23:58:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:43,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:43,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:43,188 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) [2022-02-10 23:58:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:43,256 INFO L93 Difference]: Finished difference Result 150 states and 292 transitions. [2022-02-10 23:58:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:43,256 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 [2022-02-10 23:58:43,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:43,268 INFO L225 Difference]: With dead ends: 150 [2022-02-10 23:58:43,269 INFO L226 Difference]: Without dead ends: 143 [2022-02-10 23:58:43,269 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:58:43,271 INFO L934 BasicCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:43,272 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 130 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-02-10 23:58:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 91. [2022-02-10 23:58:43,277 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) [2022-02-10 23:58:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 177 transitions. [2022-02-10 23:58:43,278 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 177 transitions. Word has length 15 [2022-02-10 23:58:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:43,278 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 177 transitions. [2022-02-10 23:58:43,278 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) [2022-02-10 23:58:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 177 transitions. [2022-02-10 23:58:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:43,279 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:43,280 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:43,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:58:43,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1395400251, now seen corresponding path program 1 times [2022-02-10 23:58:43,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:43,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151580433] [2022-02-10 23:58:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:43,411 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:43,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151580433] [2022-02-10 23:58:43,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151580433] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:43,411 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451157833] [2022-02-10 23:58:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:43,413 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) [2022-02-10 23:58:43,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 23:58:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:43,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:43,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:43,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:44,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451157833] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:44,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:44,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 23:58:44,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833963497] [2022-02-10 23:58:44,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:44,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:58:44,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:58:44,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-02-10 23:58:44,023 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) [2022-02-10 23:58:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:45,164 INFO L93 Difference]: Finished difference Result 285 states and 534 transitions. [2022-02-10 23:58:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 23:58:45,164 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 [2022-02-10 23:58:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:45,166 INFO L225 Difference]: With dead ends: 285 [2022-02-10 23:58:45,166 INFO L226 Difference]: Without dead ends: 279 [2022-02-10 23:58:45,168 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=728, Invalid=2352, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 23:58:45,171 INFO L934 BasicCegarLoop]: 33 mSDtfsCounter, 351 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:45,173 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 424 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:58:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-02-10 23:58:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 98. [2022-02-10 23:58:45,179 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) [2022-02-10 23:58:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 193 transitions. [2022-02-10 23:58:45,179 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 193 transitions. Word has length 18 [2022-02-10 23:58:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:45,180 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 193 transitions. [2022-02-10 23:58:45,180 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) [2022-02-10 23:58:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 193 transitions. [2022-02-10 23:58:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:45,180 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:45,181 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:45,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 23:58:45,395 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 [2022-02-10 23:58:45,396 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash 537715013, now seen corresponding path program 2 times [2022-02-10 23:58:45,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:45,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401319430] [2022-02-10 23:58:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:45,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:45,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:45,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401319430] [2022-02-10 23:58:45,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401319430] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:45,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796719505] [2022-02-10 23:58:45,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:58:45,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:45,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:45,504 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) [2022-02-10 23:58:45,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 23:58:45,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:45,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:45,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:45,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:45,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:45,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796719505] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:45,901 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:45,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 23:58:45,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162029222] [2022-02-10 23:58:45,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:45,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 23:58:45,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:45,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 23:58:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-02-10 23:58:45,903 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) [2022-02-10 23:58:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:47,050 INFO L93 Difference]: Finished difference Result 380 states and 710 transitions. [2022-02-10 23:58:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 23:58:47,051 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 [2022-02-10 23:58:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:47,052 INFO L225 Difference]: With dead ends: 380 [2022-02-10 23:58:47,052 INFO L226 Difference]: Without dead ends: 374 [2022-02-10 23:58:47,053 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=791, Invalid=2515, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 23:58:47,054 INFO L934 BasicCegarLoop]: 37 mSDtfsCounter, 464 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:47,054 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 506 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:58:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-02-10 23:58:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 105. [2022-02-10 23:58:47,061 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) [2022-02-10 23:58:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 209 transitions. [2022-02-10 23:58:47,061 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 209 transitions. Word has length 18 [2022-02-10 23:58:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:47,061 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 209 transitions. [2022-02-10 23:58:47,062 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) [2022-02-10 23:58:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 209 transitions. [2022-02-10 23:58:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:47,062 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:47,062 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:47,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-10 23:58:47,275 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 [2022-02-10 23:58:47,276 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash 260658713, now seen corresponding path program 3 times [2022-02-10 23:58:47,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:47,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945927886] [2022-02-10 23:58:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:47,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:47,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945927886] [2022-02-10 23:58:47,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945927886] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:47,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005018680] [2022-02-10 23:58:47,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:58:47,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:47,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:47,411 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) [2022-02-10 23:58:47,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 23:58:47,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:58:47,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:47,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:47,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:47,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005018680] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:47,826 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:47,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 23:58:47,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655466966] [2022-02-10 23:58:47,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:47,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 23:58:47,827 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:47,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 23:58:47,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-02-10 23:58:47,827 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) [2022-02-10 23:58:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:49,073 INFO L93 Difference]: Finished difference Result 419 states and 801 transitions. [2022-02-10 23:58:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:58:49,074 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 [2022-02-10 23:58:49,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:49,075 INFO L225 Difference]: With dead ends: 419 [2022-02-10 23:58:49,075 INFO L226 Difference]: Without dead ends: 409 [2022-02-10 23:58:49,076 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=806, Invalid=2616, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 23:58:49,077 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 541 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:49,077 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 502 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:58:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-02-10 23:58:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 126. [2022-02-10 23:58:49,083 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) [2022-02-10 23:58:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 265 transitions. [2022-02-10 23:58:49,083 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 265 transitions. Word has length 18 [2022-02-10 23:58:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:49,083 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 265 transitions. [2022-02-10 23:58:49,083 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) [2022-02-10 23:58:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 265 transitions. [2022-02-10 23:58:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:49,084 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:49,084 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:49,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-10 23:58:49,300 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 [2022-02-10 23:58:49,300 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:49,301 INFO L85 PathProgramCache]: Analyzing trace with hash -119562027, now seen corresponding path program 4 times [2022-02-10 23:58:49,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:49,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733962823] [2022-02-10 23:58:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:49,400 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:49,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733962823] [2022-02-10 23:58:49,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733962823] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:49,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123022503] [2022-02-10 23:58:49,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:58:49,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:49,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:49,402 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) [2022-02-10 23:58:49,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 23:58:49,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:58:49,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:49,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:49,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:49,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:49,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123022503] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:49,811 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:49,811 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 23:58:49,811 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637965063] [2022-02-10 23:58:49,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:49,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:58:49,811 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:58:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-02-10 23:58:49,812 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) [2022-02-10 23:58:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:50,480 INFO L93 Difference]: Finished difference Result 361 states and 697 transitions. [2022-02-10 23:58:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:58:50,480 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 [2022-02-10 23:58:50,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:50,482 INFO L225 Difference]: With dead ends: 361 [2022-02-10 23:58:50,482 INFO L226 Difference]: Without dead ends: 337 [2022-02-10 23:58:50,483 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=600, Invalid=1950, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 23:58:50,483 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 236 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:50,483 INFO L935 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] [2022-02-10 23:58:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-02-10 23:58:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 145. [2022-02-10 23:58:50,507 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) [2022-02-10 23:58:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 303 transitions. [2022-02-10 23:58:50,507 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 303 transitions. Word has length 18 [2022-02-10 23:58:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:50,508 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 303 transitions. [2022-02-10 23:58:50,508 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) [2022-02-10 23:58:50,508 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 303 transitions. [2022-02-10 23:58:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:50,510 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:50,510 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:50,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:50,725 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 [2022-02-10 23:58:50,726 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:50,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:50,726 INFO L85 PathProgramCache]: Analyzing trace with hash 384485672, now seen corresponding path program 1 times [2022-02-10 23:58:50,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:50,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968533499] [2022-02-10 23:58:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:50,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:50,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:50,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968533499] [2022-02-10 23:58:50,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968533499] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:50,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605253669] [2022-02-10 23:58:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:50,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:50,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:50,830 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) [2022-02-10 23:58:50,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 23:58:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:50,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:50,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:51,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:51,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605253669] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:51,176 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:51,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 23:58:51,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74220708] [2022-02-10 23:58:51,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:51,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:58:51,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:58:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:58:51,177 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) [2022-02-10 23:58:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:51,405 INFO L93 Difference]: Finished difference Result 294 states and 580 transitions. [2022-02-10 23:58:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:58:51,405 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 [2022-02-10 23:58:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:51,407 INFO L225 Difference]: With dead ends: 294 [2022-02-10 23:58:51,407 INFO L226 Difference]: Without dead ends: 285 [2022-02-10 23:58:51,407 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2022-02-10 23:58:51,407 INFO L934 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 [2022-02-10 23:58:51,408 INFO L935 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] [2022-02-10 23:58:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-02-10 23:58:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 148. [2022-02-10 23:58:51,411 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) [2022-02-10 23:58:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 309 transitions. [2022-02-10 23:58:51,412 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 309 transitions. Word has length 18 [2022-02-10 23:58:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:51,412 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 309 transitions. [2022-02-10 23:58:51,412 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) [2022-02-10 23:58:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 309 transitions. [2022-02-10 23:58:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:51,413 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:51,413 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:51,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:51,627 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 [2022-02-10 23:58:51,627 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -155995682, now seen corresponding path program 2 times [2022-02-10 23:58:51,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:51,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538745035] [2022-02-10 23:58:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:51,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:51,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:51,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538745035] [2022-02-10 23:58:51,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538745035] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:51,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540933724] [2022-02-10 23:58:51,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:58:51,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:51,745 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) [2022-02-10 23:58:51,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 23:58:51,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:51,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:51,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:51,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:51,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540933724] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:52,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:52,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 23:58:52,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531006008] [2022-02-10 23:58:52,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:52,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:58:52,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:52,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:58:52,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:58:52,125 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) [2022-02-10 23:58:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:52,372 INFO L93 Difference]: Finished difference Result 307 states and 606 transitions. [2022-02-10 23:58:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:58:52,373 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 [2022-02-10 23:58:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:52,374 INFO L225 Difference]: With dead ends: 307 [2022-02-10 23:58:52,374 INFO L226 Difference]: Without dead ends: 283 [2022-02-10 23:58:52,374 INFO L933 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 [2022-02-10 23:58:52,375 INFO L934 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 [2022-02-10 23:58:52,375 INFO L935 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] [2022-02-10 23:58:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-02-10 23:58:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 146. [2022-02-10 23:58:52,378 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) [2022-02-10 23:58:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 305 transitions. [2022-02-10 23:58:52,379 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 305 transitions. Word has length 18 [2022-02-10 23:58:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:52,379 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 305 transitions. [2022-02-10 23:58:52,379 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) [2022-02-10 23:58:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 305 transitions. [2022-02-10 23:58:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:52,380 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:52,380 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:52,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:52,595 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 [2022-02-10 23:58:52,596 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:52,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:52,596 INFO L85 PathProgramCache]: Analyzing trace with hash 52297626, now seen corresponding path program 3 times [2022-02-10 23:58:52,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:52,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395211302] [2022-02-10 23:58:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:52,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:52,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395211302] [2022-02-10 23:58:52,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395211302] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:52,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458527457] [2022-02-10 23:58:52,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:58:52,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:52,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:52,695 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) [2022-02-10 23:58:52,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 23:58:52,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:58:52,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:52,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:52,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:52,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458527457] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:53,078 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:53,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:58:53,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984891623] [2022-02-10 23:58:53,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:53,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:58:53,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:58:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:58:53,079 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) [2022-02-10 23:58:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:53,402 INFO L93 Difference]: Finished difference Result 321 states and 642 transitions. [2022-02-10 23:58:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 23:58:53,403 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 [2022-02-10 23:58:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:53,409 INFO L225 Difference]: With dead ends: 321 [2022-02-10 23:58:53,409 INFO L226 Difference]: Without dead ends: 299 [2022-02-10 23:58:53,410 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:58:53,410 INFO L934 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 [2022-02-10 23:58:53,411 INFO L935 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] [2022-02-10 23:58:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-02-10 23:58:53,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 151. [2022-02-10 23:58:53,415 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) [2022-02-10 23:58:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 316 transitions. [2022-02-10 23:58:53,415 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 316 transitions. Word has length 18 [2022-02-10 23:58:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:53,415 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 316 transitions. [2022-02-10 23:58:53,415 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) [2022-02-10 23:58:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 316 transitions. [2022-02-10 23:58:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:53,416 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:53,416 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:53,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:53,631 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 [2022-02-10 23:58:53,631 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1812350566, now seen corresponding path program 4 times [2022-02-10 23:58:53,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:53,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448270286] [2022-02-10 23:58:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:53,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448270286] [2022-02-10 23:58:53,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448270286] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:53,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846833385] [2022-02-10 23:58:53,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:58:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:53,748 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) [2022-02-10 23:58:53,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 23:58:53,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:58:53,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:53,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:53,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:53,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846833385] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:54,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:54,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:58:54,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912040162] [2022-02-10 23:58:54,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:54,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:58:54,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:58:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:58:54,134 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) [2022-02-10 23:58:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:54,590 INFO L93 Difference]: Finished difference Result 336 states and 660 transitions. [2022-02-10 23:58:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 23:58:54,590 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 [2022-02-10 23:58:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:54,591 INFO L225 Difference]: With dead ends: 336 [2022-02-10 23:58:54,591 INFO L226 Difference]: Without dead ends: 307 [2022-02-10 23:58:54,592 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:58:54,592 INFO L934 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 [2022-02-10 23:58:54,592 INFO L935 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] [2022-02-10 23:58:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-02-10 23:58:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 173. [2022-02-10 23:58:54,596 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) [2022-02-10 23:58:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 364 transitions. [2022-02-10 23:58:54,596 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 364 transitions. Word has length 18 [2022-02-10 23:58:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:54,597 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 364 transitions. [2022-02-10 23:58:54,597 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) [2022-02-10 23:58:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 364 transitions. [2022-02-10 23:58:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:54,597 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:54,597 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:54,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:54,807 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 [2022-02-10 23:58:54,808 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash -674341312, now seen corresponding path program 5 times [2022-02-10 23:58:54,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:54,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80068608] [2022-02-10 23:58:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:54,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:54,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80068608] [2022-02-10 23:58:54,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80068608] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:54,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519927399] [2022-02-10 23:58:54,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:58:54,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:54,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:54,903 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) [2022-02-10 23:58:54,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 23:58:54,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:54,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:54,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:54,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:55,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:55,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519927399] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:55,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:55,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-02-10 23:58:55,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701294577] [2022-02-10 23:58:55,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:55,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:58:55,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:55,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:58:55,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2022-02-10 23:58:55,277 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) [2022-02-10 23:58:56,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:56,019 INFO L93 Difference]: Finished difference Result 418 states and 823 transitions. [2022-02-10 23:58:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-10 23:58:56,019 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 [2022-02-10 23:58:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:56,022 INFO L225 Difference]: With dead ends: 418 [2022-02-10 23:58:56,022 INFO L226 Difference]: Without dead ends: 404 [2022-02-10 23:58:56,023 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=596, Invalid=1756, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 23:58:56,023 INFO L934 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 [2022-02-10 23:58:56,023 INFO L935 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] [2022-02-10 23:58:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-02-10 23:58:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 176. [2022-02-10 23:58:56,027 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) [2022-02-10 23:58:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 371 transitions. [2022-02-10 23:58:56,027 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 371 transitions. Word has length 18 [2022-02-10 23:58:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:56,028 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 371 transitions. [2022-02-10 23:58:56,028 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) [2022-02-10 23:58:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 371 transitions. [2022-02-10 23:58:56,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:56,029 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:56,029 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:56,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:56,244 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 [2022-02-10 23:58:56,245 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -515991736, now seen corresponding path program 6 times [2022-02-10 23:58:56,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:56,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067430975] [2022-02-10 23:58:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:56,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:56,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067430975] [2022-02-10 23:58:56,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067430975] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:56,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762979949] [2022-02-10 23:58:56,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:58:56,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:56,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:56,341 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) [2022-02-10 23:58:56,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 23:58:56,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:58:56,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:56,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:56,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:56,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:56,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762979949] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:56,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:56,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 23:58:56,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23063050] [2022-02-10 23:58:56,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:56,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:58:56,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:56,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:58:56,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:58:56,697 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) [2022-02-10 23:58:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:56,915 INFO L93 Difference]: Finished difference Result 289 states and 568 transitions. [2022-02-10 23:58:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:58:56,915 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 [2022-02-10 23:58:56,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:56,916 INFO L225 Difference]: With dead ends: 289 [2022-02-10 23:58:56,916 INFO L226 Difference]: Without dead ends: 280 [2022-02-10 23:58:56,916 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:58:56,917 INFO L934 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 [2022-02-10 23:58:56,917 INFO L935 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] [2022-02-10 23:58:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-02-10 23:58:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 178. [2022-02-10 23:58:56,920 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) [2022-02-10 23:58:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 374 transitions. [2022-02-10 23:58:56,921 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 374 transitions. Word has length 18 [2022-02-10 23:58:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:56,921 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 374 transitions. [2022-02-10 23:58:56,921 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) [2022-02-10 23:58:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 374 transitions. [2022-02-10 23:58:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:56,921 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:56,921 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:56,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:57,127 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 [2022-02-10 23:58:57,127 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1056473090, now seen corresponding path program 7 times [2022-02-10 23:58:57,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:57,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687335775] [2022-02-10 23:58:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:57,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687335775] [2022-02-10 23:58:57,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687335775] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:57,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220509374] [2022-02-10 23:58:57,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:58:57,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:57,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:57,216 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) [2022-02-10 23:58:57,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 23:58:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:57,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:57,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:57,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220509374] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:57,547 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:57,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 23:58:57,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215745557] [2022-02-10 23:58:57,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:57,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:58:57,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:58:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:58:57,548 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) [2022-02-10 23:58:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:57,748 INFO L93 Difference]: Finished difference Result 302 states and 594 transitions. [2022-02-10 23:58:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:58:57,748 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 [2022-02-10 23:58:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:57,749 INFO L225 Difference]: With dead ends: 302 [2022-02-10 23:58:57,749 INFO L226 Difference]: Without dead ends: 278 [2022-02-10 23:58:57,749 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2022-02-10 23:58:57,750 INFO L934 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 [2022-02-10 23:58:57,750 INFO L935 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] [2022-02-10 23:58:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-02-10 23:58:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 176. [2022-02-10 23:58:57,753 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) [2022-02-10 23:58:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 370 transitions. [2022-02-10 23:58:57,753 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 370 transitions. Word has length 18 [2022-02-10 23:58:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:57,753 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 370 transitions. [2022-02-10 23:58:57,754 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) [2022-02-10 23:58:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 370 transitions. [2022-02-10 23:58:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:57,754 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:57,754 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:57,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-10 23:58:57,963 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 [2022-02-10 23:58:57,963 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash -848179782, now seen corresponding path program 8 times [2022-02-10 23:58:57,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:57,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024574052] [2022-02-10 23:58:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:58,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:58,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024574052] [2022-02-10 23:58:58,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024574052] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:58,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946565776] [2022-02-10 23:58:58,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:58:58,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:58,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:58,056 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) [2022-02-10 23:58:58,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 23:58:58,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:58,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:58,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:58,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:58,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:58,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946565776] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:58,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:58,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:58:58,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648666344] [2022-02-10 23:58:58,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:58,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:58:58,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:58:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:58:58,440 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) [2022-02-10 23:58:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:58,735 INFO L93 Difference]: Finished difference Result 292 states and 580 transitions. [2022-02-10 23:58:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 23:58:58,736 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 [2022-02-10 23:58:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:58,736 INFO L225 Difference]: With dead ends: 292 [2022-02-10 23:58:58,737 INFO L226 Difference]: Without dead ends: 270 [2022-02-10 23:58:58,737 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 23:58:58,737 INFO L934 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 [2022-02-10 23:58:58,737 INFO L935 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] [2022-02-10 23:58:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-02-10 23:58:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 173. [2022-02-10 23:58:58,740 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) [2022-02-10 23:58:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 362 transitions. [2022-02-10 23:58:58,741 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 362 transitions. Word has length 18 [2022-02-10 23:58:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:58,741 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 362 transitions. [2022-02-10 23:58:58,741 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) [2022-02-10 23:58:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 362 transitions. [2022-02-10 23:58:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:58:58,742 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:58,742 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:58,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:58,952 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 [2022-02-10 23:58:58,953 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:58:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2126537841, now seen corresponding path program 5 times [2022-02-10 23:58:58,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:58,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570145794] [2022-02-10 23:58:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:59,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570145794] [2022-02-10 23:58:59,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570145794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:59,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235973918] [2022-02-10 23:58:59,036 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:58:59,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:59,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:59,040 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) [2022-02-10 23:58:59,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 23:58:59,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:58:59,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:58:59,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:58:59,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:59,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235973918] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:59,387 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:59,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 23:58:59,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445608706] [2022-02-10 23:58:59,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:59,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:58:59,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:58:59,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-02-10 23:58:59,388 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) [2022-02-10 23:59:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:00,309 INFO L93 Difference]: Finished difference Result 521 states and 1015 transitions. [2022-02-10 23:59:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 23:59:00,310 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 [2022-02-10 23:59:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:00,311 INFO L225 Difference]: With dead ends: 521 [2022-02-10 23:59:00,311 INFO L226 Difference]: Without dead ends: 491 [2022-02-10 23:59:00,312 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=809, Invalid=2271, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 23:59:00,312 INFO L934 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 [2022-02-10 23:59:00,313 INFO L935 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] [2022-02-10 23:59:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-02-10 23:59:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 188. [2022-02-10 23:59:00,317 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) [2022-02-10 23:59:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 403 transitions. [2022-02-10 23:59:00,317 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 403 transitions. Word has length 18 [2022-02-10 23:59:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:00,317 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 403 transitions. [2022-02-10 23:59:00,317 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) [2022-02-10 23:59:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 403 transitions. [2022-02-10 23:59:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:00,318 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:00,318 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:00,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-02-10 23:59:00,531 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 [2022-02-10 23:59:00,531 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1103841132, now seen corresponding path program 9 times [2022-02-10 23:59:00,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:00,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774868467] [2022-02-10 23:59:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:00,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774868467] [2022-02-10 23:59:00,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774868467] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:00,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699768908] [2022-02-10 23:59:00,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:00,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:00,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:00,627 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) [2022-02-10 23:59:00,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 23:59:00,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:59:00,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:00,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:00,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:00,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699768908] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:00,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:00,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:59:00,947 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192100432] [2022-02-10 23:59:00,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:00,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:59:00,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:59:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:00,947 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) [2022-02-10 23:59:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:01,081 INFO L93 Difference]: Finished difference Result 265 states and 534 transitions. [2022-02-10 23:59:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 23:59:01,082 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 [2022-02-10 23:59:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:01,083 INFO L225 Difference]: With dead ends: 265 [2022-02-10 23:59:01,083 INFO L226 Difference]: Without dead ends: 256 [2022-02-10 23:59:01,083 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2022-02-10 23:59:01,084 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 166 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-02-10 23:59:01,084 INFO L935 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] [2022-02-10 23:59:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-02-10 23:59:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 192. [2022-02-10 23:59:01,087 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) [2022-02-10 23:59:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 409 transitions. [2022-02-10 23:59:01,088 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 409 transitions. Word has length 18 [2022-02-10 23:59:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:01,088 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 409 transitions. [2022-02-10 23:59:01,088 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) [2022-02-10 23:59:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 409 transitions. [2022-02-10 23:59:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:01,088 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:01,088 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:01,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:01,299 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 [2022-02-10 23:59:01,299 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash 563359778, now seen corresponding path program 10 times [2022-02-10 23:59:01,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:01,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990559955] [2022-02-10 23:59:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:01,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:01,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990559955] [2022-02-10 23:59:01,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990559955] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:01,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705931971] [2022-02-10 23:59:01,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:01,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:01,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:01,388 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) [2022-02-10 23:59:01,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 23:59:01,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:01,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:01,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:01,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:01,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705931971] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:01,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:01,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:59:01,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136487266] [2022-02-10 23:59:01,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:01,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:59:01,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:59:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:01,719 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) [2022-02-10 23:59:01,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:01,869 INFO L93 Difference]: Finished difference Result 255 states and 523 transitions. [2022-02-10 23:59:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 23:59:01,869 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 [2022-02-10 23:59:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:01,870 INFO L225 Difference]: With dead ends: 255 [2022-02-10 23:59:01,870 INFO L226 Difference]: Without dead ends: 229 [2022-02-10 23:59:01,871 INFO L933 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 [2022-02-10 23:59:01,871 INFO L934 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 [2022-02-10 23:59:01,871 INFO L935 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] [2022-02-10 23:59:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-02-10 23:59:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 188. [2022-02-10 23:59:01,876 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) [2022-02-10 23:59:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 402 transitions. [2022-02-10 23:59:01,876 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 402 transitions. Word has length 18 [2022-02-10 23:59:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:01,877 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 402 transitions. [2022-02-10 23:59:01,877 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) [2022-02-10 23:59:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 402 transitions. [2022-02-10 23:59:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:01,877 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:01,877 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:01,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:02,090 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 [2022-02-10 23:59:02,090 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1258539261, now seen corresponding path program 6 times [2022-02-10 23:59:02,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:02,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340995204] [2022-02-10 23:59:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:02,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:02,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340995204] [2022-02-10 23:59:02,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340995204] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:02,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421161909] [2022-02-10 23:59:02,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:02,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:02,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:02,186 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) [2022-02-10 23:59:02,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 23:59:02,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:59:02,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:02,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:02,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:02,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:02,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421161909] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:02,563 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:02,563 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 23:59:02,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93104787] [2022-02-10 23:59:02,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:02,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:59:02,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:02,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:59:02,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:02,564 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) [2022-02-10 23:59:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:03,350 INFO L93 Difference]: Finished difference Result 327 states and 651 transitions. [2022-02-10 23:59:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-10 23:59:03,350 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 [2022-02-10 23:59:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:03,352 INFO L225 Difference]: With dead ends: 327 [2022-02-10 23:59:03,352 INFO L226 Difference]: Without dead ends: 321 [2022-02-10 23:59:03,352 INFO L933 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 [2022-02-10 23:59:03,353 INFO L934 BasicCegarLoop]: 36 mSDtfsCounter, 205 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:03,353 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 422 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-02-10 23:59:03,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 187. [2022-02-10 23:59:03,356 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) [2022-02-10 23:59:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 401 transitions. [2022-02-10 23:59:03,356 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 401 transitions. Word has length 18 [2022-02-10 23:59:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:03,356 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 401 transitions. [2022-02-10 23:59:03,357 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) [2022-02-10 23:59:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 401 transitions. [2022-02-10 23:59:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:03,357 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:03,357 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:03,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:03,571 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 [2022-02-10 23:59:03,572 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:03,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:03,572 INFO L85 PathProgramCache]: Analyzing trace with hash 400854023, now seen corresponding path program 7 times [2022-02-10 23:59:03,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:03,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191572946] [2022-02-10 23:59:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:03,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191572946] [2022-02-10 23:59:03,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191572946] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:03,676 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593312318] [2022-02-10 23:59:03,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:03,677 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) [2022-02-10 23:59:03,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 23:59:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:03,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:03,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:03,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:04,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593312318] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:04,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:04,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 23:59:04,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739971235] [2022-02-10 23:59:04,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:04,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:59:04,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:04,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:59:04,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-02-10 23:59:04,040 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) [2022-02-10 23:59:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:04,831 INFO L93 Difference]: Finished difference Result 423 states and 831 transitions. [2022-02-10 23:59:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:59:04,832 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 [2022-02-10 23:59:04,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:04,833 INFO L225 Difference]: With dead ends: 423 [2022-02-10 23:59:04,833 INFO L226 Difference]: Without dead ends: 417 [2022-02-10 23:59:04,834 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=698, Invalid=1954, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 23:59:04,834 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 304 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:04,834 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 403 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-02-10 23:59:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 194. [2022-02-10 23:59:04,841 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) [2022-02-10 23:59:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 417 transitions. [2022-02-10 23:59:04,842 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 417 transitions. Word has length 18 [2022-02-10 23:59:04,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:04,842 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 417 transitions. [2022-02-10 23:59:04,842 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) [2022-02-10 23:59:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 417 transitions. [2022-02-10 23:59:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:04,843 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:04,843 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:04,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:05,058 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 [2022-02-10 23:59:05,059 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 123797723, now seen corresponding path program 8 times [2022-02-10 23:59:05,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:05,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125023008] [2022-02-10 23:59:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:05,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:05,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125023008] [2022-02-10 23:59:05,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125023008] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:05,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810833700] [2022-02-10 23:59:05,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:05,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:05,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:05,143 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) [2022-02-10 23:59:05,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 23:59:05,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:05,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:05,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:05,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:05,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810833700] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:05,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:05,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-02-10 23:59:05,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844947594] [2022-02-10 23:59:05,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:05,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:59:05,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:59:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-02-10 23:59:05,526 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) [2022-02-10 23:59:06,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:06,656 INFO L93 Difference]: Finished difference Result 479 states and 945 transitions. [2022-02-10 23:59:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-10 23:59:06,656 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 [2022-02-10 23:59:06,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:06,658 INFO L225 Difference]: With dead ends: 479 [2022-02-10 23:59:06,658 INFO L226 Difference]: Without dead ends: 469 [2022-02-10 23:59:06,658 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=827, Invalid=2365, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 23:59:06,659 INFO L934 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 [2022-02-10 23:59:06,659 INFO L935 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] [2022-02-10 23:59:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-02-10 23:59:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 198. [2022-02-10 23:59:06,663 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) [2022-02-10 23:59:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 433 transitions. [2022-02-10 23:59:06,663 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 433 transitions. Word has length 18 [2022-02-10 23:59:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:06,663 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 433 transitions. [2022-02-10 23:59:06,663 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) [2022-02-10 23:59:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 433 transitions. [2022-02-10 23:59:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:06,664 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:06,664 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:06,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:06,881 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 [2022-02-10 23:59:06,881 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash -256423017, now seen corresponding path program 9 times [2022-02-10 23:59:06,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:06,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160718860] [2022-02-10 23:59:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:06,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:06,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:06,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160718860] [2022-02-10 23:59:06,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160718860] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:06,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115223233] [2022-02-10 23:59:06,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:06,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:06,973 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) [2022-02-10 23:59:06,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 23:59:06,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:59:06,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:06,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:06,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:07,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115223233] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:07,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:07,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 23:59:07,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961511401] [2022-02-10 23:59:07,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:07,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:59:07,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:59:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:07,356 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) [2022-02-10 23:59:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:07,931 INFO L93 Difference]: Finished difference Result 414 states and 834 transitions. [2022-02-10 23:59:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 23:59:07,932 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 [2022-02-10 23:59:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:07,933 INFO L225 Difference]: With dead ends: 414 [2022-02-10 23:59:07,933 INFO L226 Difference]: Without dead ends: 390 [2022-02-10 23:59:07,934 INFO L933 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 [2022-02-10 23:59:07,934 INFO L934 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 [2022-02-10 23:59:07,935 INFO L935 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] [2022-02-10 23:59:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-02-10 23:59:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 206. [2022-02-10 23:59:07,938 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) [2022-02-10 23:59:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 447 transitions. [2022-02-10 23:59:07,938 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 447 transitions. Word has length 18 [2022-02-10 23:59:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:07,938 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 447 transitions. [2022-02-10 23:59:07,939 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) [2022-02-10 23:59:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 447 transitions. [2022-02-10 23:59:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:07,939 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:07,939 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:07,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 23:59:08,150 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 [2022-02-10 23:59:08,151 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:08,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash 247624682, now seen corresponding path program 11 times [2022-02-10 23:59:08,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:08,151 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647815469] [2022-02-10 23:59:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:08,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:08,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647815469] [2022-02-10 23:59:08,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647815469] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:08,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369496878] [2022-02-10 23:59:08,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:08,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:08,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:08,239 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) [2022-02-10 23:59:08,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 23:59:08,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:08,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:08,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:08,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:08,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:08,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369496878] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:08,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:08,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:59:08,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367326152] [2022-02-10 23:59:08,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:08,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:59:08,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:59:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:08,526 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) [2022-02-10 23:59:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:08,723 INFO L93 Difference]: Finished difference Result 273 states and 568 transitions. [2022-02-10 23:59:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:59:08,724 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 [2022-02-10 23:59:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:08,725 INFO L225 Difference]: With dead ends: 273 [2022-02-10 23:59:08,725 INFO L226 Difference]: Without dead ends: 264 [2022-02-10 23:59:08,725 INFO L933 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 [2022-02-10 23:59:08,725 INFO L934 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 [2022-02-10 23:59:08,726 INFO L935 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] [2022-02-10 23:59:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-02-10 23:59:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 208. [2022-02-10 23:59:08,728 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) [2022-02-10 23:59:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 450 transitions. [2022-02-10 23:59:08,729 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 450 transitions. Word has length 18 [2022-02-10 23:59:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:08,729 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 450 transitions. [2022-02-10 23:59:08,729 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) [2022-02-10 23:59:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 450 transitions. [2022-02-10 23:59:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:08,730 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:08,730 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:08,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:08,945 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 [2022-02-10 23:59:08,946 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash -292856672, now seen corresponding path program 12 times [2022-02-10 23:59:08,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:08,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117768400] [2022-02-10 23:59:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:08,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:09,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:09,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117768400] [2022-02-10 23:59:09,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117768400] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:09,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604342107] [2022-02-10 23:59:09,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:09,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:09,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:09,038 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) [2022-02-10 23:59:09,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 23:59:09,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:59:09,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:09,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:09,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:09,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:09,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604342107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:09,350 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:09,350 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-10 23:59:09,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305410430] [2022-02-10 23:59:09,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:09,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:59:09,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:59:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:59:09,351 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) [2022-02-10 23:59:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:09,556 INFO L93 Difference]: Finished difference Result 286 states and 594 transitions. [2022-02-10 23:59:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:59:09,564 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 [2022-02-10 23:59:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:09,565 INFO L225 Difference]: With dead ends: 286 [2022-02-10 23:59:09,565 INFO L226 Difference]: Without dead ends: 262 [2022-02-10 23:59:09,565 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2022-02-10 23:59:09,566 INFO L934 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 [2022-02-10 23:59:09,566 INFO L935 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] [2022-02-10 23:59:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-02-10 23:59:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 206. [2022-02-10 23:59:09,584 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) [2022-02-10 23:59:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 446 transitions. [2022-02-10 23:59:09,584 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 446 transitions. Word has length 18 [2022-02-10 23:59:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:09,585 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 446 transitions. [2022-02-10 23:59:09,585 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) [2022-02-10 23:59:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 446 transitions. [2022-02-10 23:59:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:09,586 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:09,586 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:09,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-10 23:59:09,802 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 [2022-02-10 23:59:09,802 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash -84563364, now seen corresponding path program 13 times [2022-02-10 23:59:09,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:09,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696592389] [2022-02-10 23:59:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:09,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:09,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:09,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696592389] [2022-02-10 23:59:09,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696592389] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:09,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277693884] [2022-02-10 23:59:09,903 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:09,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:09,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:09,904 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) [2022-02-10 23:59:09,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 23:59:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:09,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:09,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:10,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:10,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277693884] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:10,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:10,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 23:59:10,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121080866] [2022-02-10 23:59:10,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:10,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:59:10,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:10,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:59:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:59:10,225 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) [2022-02-10 23:59:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:10,546 INFO L93 Difference]: Finished difference Result 300 states and 630 transitions. [2022-02-10 23:59:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 23:59:10,547 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 [2022-02-10 23:59:10,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:10,548 INFO L225 Difference]: With dead ends: 300 [2022-02-10 23:59:10,548 INFO L226 Difference]: Without dead ends: 278 [2022-02-10 23:59:10,548 INFO L933 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 [2022-02-10 23:59:10,548 INFO L934 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 [2022-02-10 23:59:10,549 INFO L935 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] [2022-02-10 23:59:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-02-10 23:59:10,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 207. [2022-02-10 23:59:10,557 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) [2022-02-10 23:59:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 448 transitions. [2022-02-10 23:59:10,557 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 448 transitions. Word has length 18 [2022-02-10 23:59:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:10,557 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 448 transitions. [2022-02-10 23:59:10,557 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) [2022-02-10 23:59:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 448 transitions. [2022-02-10 23:59:10,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:10,558 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:10,558 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:10,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-10 23:59:10,762 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 [2022-02-10 23:59:10,762 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1675489576, now seen corresponding path program 14 times [2022-02-10 23:59:10,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:10,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280279920] [2022-02-10 23:59:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:10,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:10,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:10,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280279920] [2022-02-10 23:59:10,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280279920] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:10,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452559655] [2022-02-10 23:59:10,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:10,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:10,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:10,851 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) [2022-02-10 23:59:10,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 23:59:10,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:10,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:10,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:10,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:11,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:11,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452559655] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:11,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:11,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 23:59:11,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564004491] [2022-02-10 23:59:11,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:11,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:59:11,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:59:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:59:11,195 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) [2022-02-10 23:59:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:11,626 INFO L93 Difference]: Finished difference Result 386 states and 786 transitions. [2022-02-10 23:59:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 23:59:11,627 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 [2022-02-10 23:59:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:11,628 INFO L225 Difference]: With dead ends: 386 [2022-02-10 23:59:11,628 INFO L226 Difference]: Without dead ends: 357 [2022-02-10 23:59:11,628 INFO L933 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 [2022-02-10 23:59:11,629 INFO L934 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, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:11,629 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 504 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-02-10 23:59:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 221. [2022-02-10 23:59:11,632 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) [2022-02-10 23:59:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 480 transitions. [2022-02-10 23:59:11,633 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 480 transitions. Word has length 18 [2022-02-10 23:59:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:11,633 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 480 transitions. [2022-02-10 23:59:11,633 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) [2022-02-10 23:59:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 480 transitions. [2022-02-10 23:59:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:11,633 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:11,633 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:11,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:11,839 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 [2022-02-10 23:59:11,839 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:11,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:11,840 INFO L85 PathProgramCache]: Analyzing trace with hash -811202302, now seen corresponding path program 15 times [2022-02-10 23:59:11,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:11,840 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597548498] [2022-02-10 23:59:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:11,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:11,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:11,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597548498] [2022-02-10 23:59:11,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597548498] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:11,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932943546] [2022-02-10 23:59:11,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:11,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:11,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:11,937 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) [2022-02-10 23:59:11,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 23:59:11,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:59:11,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:11,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:11,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:12,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:12,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932943546] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:12,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:12,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:59:12,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715018114] [2022-02-10 23:59:12,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:12,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:59:12,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:59:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:12,283 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) [2022-02-10 23:59:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:12,775 INFO L93 Difference]: Finished difference Result 385 states and 789 transitions. [2022-02-10 23:59:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-10 23:59:12,775 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 [2022-02-10 23:59:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:12,776 INFO L225 Difference]: With dead ends: 385 [2022-02-10 23:59:12,776 INFO L226 Difference]: Without dead ends: 371 [2022-02-10 23:59:12,777 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 23:59:12,777 INFO L934 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 [2022-02-10 23:59:12,777 INFO L935 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] [2022-02-10 23:59:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-02-10 23:59:12,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 205. [2022-02-10 23:59:12,780 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) [2022-02-10 23:59:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 442 transitions. [2022-02-10 23:59:12,781 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 442 transitions. Word has length 18 [2022-02-10 23:59:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:12,781 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 442 transitions. [2022-02-10 23:59:12,781 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) [2022-02-10 23:59:12,781 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 442 transitions. [2022-02-10 23:59:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:12,782 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:12,782 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:12,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-10 23:59:12,998 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 [2022-02-10 23:59:12,998 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1079863165, now seen corresponding path program 10 times [2022-02-10 23:59:12,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:12,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953771006] [2022-02-10 23:59:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:13,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:13,090 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953771006] [2022-02-10 23:59:13,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953771006] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:13,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245484395] [2022-02-10 23:59:13,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:13,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:13,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:13,092 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) [2022-02-10 23:59:13,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 23:59:13,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:13,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:13,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:13,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:13,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:13,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245484395] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:13,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:13,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 23:59:13,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516678663] [2022-02-10 23:59:13,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:13,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 23:59:13,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 23:59:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-02-10 23:59:13,463 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) [2022-02-10 23:59:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:14,083 INFO L93 Difference]: Finished difference Result 334 states and 673 transitions. [2022-02-10 23:59:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 23:59:14,084 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 [2022-02-10 23:59:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:14,085 INFO L225 Difference]: With dead ends: 334 [2022-02-10 23:59:14,085 INFO L226 Difference]: Without dead ends: 328 [2022-02-10 23:59:14,085 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=609, Invalid=1647, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:14,086 INFO L934 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 [2022-02-10 23:59:14,086 INFO L935 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] [2022-02-10 23:59:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-02-10 23:59:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 204. [2022-02-10 23:59:14,089 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) [2022-02-10 23:59:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 441 transitions. [2022-02-10 23:59:14,089 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 441 transitions. Word has length 18 [2022-02-10 23:59:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:14,089 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 441 transitions. [2022-02-10 23:59:14,089 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) [2022-02-10 23:59:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 441 transitions. [2022-02-10 23:59:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:14,090 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:14,090 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:14,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-10 23:59:14,290 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 [2022-02-10 23:59:14,291 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1356919465, now seen corresponding path program 11 times [2022-02-10 23:59:14,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:14,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229560049] [2022-02-10 23:59:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:14,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:14,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:14,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229560049] [2022-02-10 23:59:14,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229560049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:14,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060607257] [2022-02-10 23:59:14,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:14,372 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) [2022-02-10 23:59:14,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 23:59:14,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:14,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:14,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:14,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:14,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:14,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060607257] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:14,761 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:14,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 23:59:14,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141803920] [2022-02-10 23:59:14,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:14,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 23:59:14,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 23:59:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-02-10 23:59:14,762 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) [2022-02-10 23:59:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:15,531 INFO L93 Difference]: Finished difference Result 437 states and 877 transitions. [2022-02-10 23:59:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:59:15,531 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 [2022-02-10 23:59:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:15,532 INFO L225 Difference]: With dead ends: 437 [2022-02-10 23:59:15,532 INFO L226 Difference]: Without dead ends: 423 [2022-02-10 23:59:15,533 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=775, Invalid=1981, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 23:59:15,533 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 363 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:15,534 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 457 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-02-10 23:59:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 212. [2022-02-10 23:59:15,537 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) [2022-02-10 23:59:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 466 transitions. [2022-02-10 23:59:15,538 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 466 transitions. Word has length 18 [2022-02-10 23:59:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:15,538 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 466 transitions. [2022-02-10 23:59:15,538 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) [2022-02-10 23:59:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 466 transitions. [2022-02-10 23:59:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:15,538 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:15,538 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:15,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 23:59:15,751 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 [2022-02-10 23:59:15,751 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1058776395, now seen corresponding path program 12 times [2022-02-10 23:59:15,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:15,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008467973] [2022-02-10 23:59:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:15,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:15,835 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:15,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008467973] [2022-02-10 23:59:15,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008467973] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:15,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510067119] [2022-02-10 23:59:15,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:15,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:15,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:15,837 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) [2022-02-10 23:59:15,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 23:59:15,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:59:15,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:15,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:15,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:16,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:16,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510067119] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:16,174 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:16,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 23:59:16,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431060086] [2022-02-10 23:59:16,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:16,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:59:16,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:16,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:59:16,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:16,174 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) [2022-02-10 23:59:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:16,615 INFO L93 Difference]: Finished difference Result 377 states and 771 transitions. [2022-02-10 23:59:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 23:59:16,615 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 [2022-02-10 23:59:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:16,616 INFO L225 Difference]: With dead ends: 377 [2022-02-10 23:59:16,616 INFO L226 Difference]: Without dead ends: 353 [2022-02-10 23:59:16,616 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=478, Invalid=1244, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 23:59:16,617 INFO L934 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 [2022-02-10 23:59:16,617 INFO L935 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] [2022-02-10 23:59:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-02-10 23:59:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 212. [2022-02-10 23:59:16,620 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) [2022-02-10 23:59:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 463 transitions. [2022-02-10 23:59:16,620 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 463 transitions. Word has length 18 [2022-02-10 23:59:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:16,620 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 463 transitions. [2022-02-10 23:59:16,620 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) [2022-02-10 23:59:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 463 transitions. [2022-02-10 23:59:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:16,621 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:16,621 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:16,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:16,835 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 [2022-02-10 23:59:16,835 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 190400250, now seen corresponding path program 16 times [2022-02-10 23:59:16,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:16,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387900977] [2022-02-10 23:59:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:16,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:16,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387900977] [2022-02-10 23:59:16,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387900977] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:16,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236776277] [2022-02-10 23:59:16,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:16,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:16,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:16,930 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) [2022-02-10 23:59:16,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 23:59:16,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:16,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:16,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:16,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:17,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:17,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236776277] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:17,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:17,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-02-10 23:59:17,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790539553] [2022-02-10 23:59:17,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:17,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:59:17,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:59:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:59:17,259 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) [2022-02-10 23:59:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:17,729 INFO L93 Difference]: Finished difference Result 381 states and 774 transitions. [2022-02-10 23:59:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 23:59:17,730 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 [2022-02-10 23:59:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:17,731 INFO L225 Difference]: With dead ends: 381 [2022-02-10 23:59:17,731 INFO L226 Difference]: Without dead ends: 356 [2022-02-10 23:59:17,731 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 23:59:17,731 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 232 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:17,732 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 394 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-02-10 23:59:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 227. [2022-02-10 23:59:17,735 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) [2022-02-10 23:59:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 497 transitions. [2022-02-10 23:59:17,735 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 497 transitions. Word has length 18 [2022-02-10 23:59:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:17,735 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 497 transitions. [2022-02-10 23:59:17,735 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) [2022-02-10 23:59:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 497 transitions. [2022-02-10 23:59:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:17,736 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:17,736 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:17,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:17,944 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 [2022-02-10 23:59:17,944 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1998675668, now seen corresponding path program 17 times [2022-02-10 23:59:17,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:17,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701962725] [2022-02-10 23:59:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:18,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:18,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701962725] [2022-02-10 23:59:18,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701962725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:18,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417769590] [2022-02-10 23:59:18,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:18,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:18,027 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) [2022-02-10 23:59:18,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 23:59:18,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:18,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:18,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:18,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:18,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:18,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417769590] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:18,412 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:18,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-10 23:59:18,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993179723] [2022-02-10 23:59:18,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:18,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:59:18,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:59:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:18,413 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) [2022-02-10 23:59:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:18,967 INFO L93 Difference]: Finished difference Result 384 states and 785 transitions. [2022-02-10 23:59:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 23:59:18,967 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 [2022-02-10 23:59:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:18,969 INFO L225 Difference]: With dead ends: 384 [2022-02-10 23:59:18,969 INFO L226 Difference]: Without dead ends: 370 [2022-02-10 23:59:18,969 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 23:59:18,969 INFO L934 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 [2022-02-10 23:59:18,969 INFO L935 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] [2022-02-10 23:59:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-02-10 23:59:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 221. [2022-02-10 23:59:18,972 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) [2022-02-10 23:59:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 486 transitions. [2022-02-10 23:59:18,973 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 486 transitions. Word has length 18 [2022-02-10 23:59:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:18,973 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 486 transitions. [2022-02-10 23:59:18,973 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) [2022-02-10 23:59:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 486 transitions. [2022-02-10 23:59:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:18,973 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:18,974 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:18,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-10 23:59:19,179 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 [2022-02-10 23:59:19,179 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1044229949, now seen corresponding path program 13 times [2022-02-10 23:59:19,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:19,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224915092] [2022-02-10 23:59:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:19,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:19,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:19,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224915092] [2022-02-10 23:59:19,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224915092] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:19,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789527513] [2022-02-10 23:59:19,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:19,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:19,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:19,272 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) [2022-02-10 23:59:19,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 23:59:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:19,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:19,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:19,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:19,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789527513] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:19,665 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:19,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-02-10 23:59:19,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385735325] [2022-02-10 23:59:19,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:19,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-10 23:59:19,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-10 23:59:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-02-10 23:59:19,666 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) [2022-02-10 23:59:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:20,128 INFO L93 Difference]: Finished difference Result 322 states and 671 transitions. [2022-02-10 23:59:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 23:59:20,128 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 [2022-02-10 23:59:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:20,129 INFO L225 Difference]: With dead ends: 322 [2022-02-10 23:59:20,129 INFO L226 Difference]: Without dead ends: 315 [2022-02-10 23:59:20,129 INFO L933 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 [2022-02-10 23:59:20,130 INFO L934 BasicCegarLoop]: 54 mSDtfsCounter, 193 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:20,130 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 616 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:59:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-02-10 23:59:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2022-02-10 23:59:20,133 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) [2022-02-10 23:59:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 496 transitions. [2022-02-10 23:59:20,133 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 496 transitions. Word has length 18 [2022-02-10 23:59:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:20,133 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 496 transitions. [2022-02-10 23:59:20,133 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) [2022-02-10 23:59:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 496 transitions. [2022-02-10 23:59:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:20,134 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:20,134 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:20,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:20,347 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 [2022-02-10 23:59:20,347 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1558502009, now seen corresponding path program 14 times [2022-02-10 23:59:20,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:20,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870631946] [2022-02-10 23:59:20,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:20,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:20,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:20,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870631946] [2022-02-10 23:59:20,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870631946] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:20,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244672975] [2022-02-10 23:59:20,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:20,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:20,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:20,433 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) [2022-02-10 23:59:20,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 23:59:20,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:20,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:20,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:20,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:20,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:20,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244672975] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:20,777 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:20,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-02-10 23:59:20,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528678115] [2022-02-10 23:59:20,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:20,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:59:20,777 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:59:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:59:20,778 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) [2022-02-10 23:59:21,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:21,086 INFO L93 Difference]: Finished difference Result 329 states and 685 transitions. [2022-02-10 23:59:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 23:59:21,086 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 [2022-02-10 23:59:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:21,087 INFO L225 Difference]: With dead ends: 329 [2022-02-10 23:59:21,087 INFO L226 Difference]: Without dead ends: 304 [2022-02-10 23:59:21,087 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-02-10 23:59:21,088 INFO L934 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 [2022-02-10 23:59:21,089 INFO L935 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] [2022-02-10 23:59:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-02-10 23:59:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 232. [2022-02-10 23:59:21,093 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) [2022-02-10 23:59:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 510 transitions. [2022-02-10 23:59:21,094 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 510 transitions. Word has length 18 [2022-02-10 23:59:21,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:21,094 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 510 transitions. [2022-02-10 23:59:21,094 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) [2022-02-10 23:59:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 510 transitions. [2022-02-10 23:59:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-10 23:59:21,095 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:21,095 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:21,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:21,312 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 [2022-02-10 23:59:21,312 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash -505252739, now seen corresponding path program 15 times [2022-02-10 23:59:21,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:21,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350752556] [2022-02-10 23:59:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:21,391 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:21,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350752556] [2022-02-10 23:59:21,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350752556] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:21,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889237400] [2022-02-10 23:59:21,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:21,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:21,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:21,393 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) [2022-02-10 23:59:21,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 23:59:21,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:59:21,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:59:21,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:21,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:21,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889237400] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:21,690 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:21,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-02-10 23:59:21,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936246165] [2022-02-10 23:59:21,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:21,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:59:21,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:21,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:59:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:59:21,691 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) [2022-02-10 23:59:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:21,943 INFO L93 Difference]: Finished difference Result 285 states and 602 transitions. [2022-02-10 23:59:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:59:21,944 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 [2022-02-10 23:59:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:21,945 INFO L225 Difference]: With dead ends: 285 [2022-02-10 23:59:21,945 INFO L226 Difference]: Without dead ends: 266 [2022-02-10 23:59:21,945 INFO L933 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 [2022-02-10 23:59:21,945 INFO L934 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 [2022-02-10 23:59:21,945 INFO L935 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] [2022-02-10 23:59:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-02-10 23:59:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 232. [2022-02-10 23:59:21,948 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) [2022-02-10 23:59:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 509 transitions. [2022-02-10 23:59:21,949 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 509 transitions. Word has length 18 [2022-02-10 23:59:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:21,949 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 509 transitions. [2022-02-10 23:59:21,949 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) [2022-02-10 23:59:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 509 transitions. [2022-02-10 23:59:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:21,949 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:21,949 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:21,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-02-10 23:59:22,150 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 [2022-02-10 23:59:22,150 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1671790291, now seen corresponding path program 16 times [2022-02-10 23:59:22,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:22,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034800372] [2022-02-10 23:59:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:22,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:22,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:22,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034800372] [2022-02-10 23:59:22,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034800372] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:22,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088013660] [2022-02-10 23:59:22,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:22,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:22,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:22,256 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) [2022-02-10 23:59:22,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 23:59:22,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:22,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:22,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 23:59:22,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:22,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:22,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088013660] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:22,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:22,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-02-10 23:59:22,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462035097] [2022-02-10 23:59:22,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:22,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:59:22,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:22,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:59:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:59:22,795 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) [2022-02-10 23:59:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:24,357 INFO L93 Difference]: Finished difference Result 668 states and 1344 transitions. [2022-02-10 23:59:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-10 23:59:24,358 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 [2022-02-10 23:59:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:24,360 INFO L225 Difference]: With dead ends: 668 [2022-02-10 23:59:24,360 INFO L226 Difference]: Without dead ends: 641 [2022-02-10 23:59:24,361 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=976, Invalid=3184, Unknown=0, NotChecked=0, Total=4160 [2022-02-10 23:59:24,361 INFO L934 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, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:24,361 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 851 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:59:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-02-10 23:59:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 228. [2022-02-10 23:59:24,365 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) [2022-02-10 23:59:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 499 transitions. [2022-02-10 23:59:24,366 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 499 transitions. Word has length 21 [2022-02-10 23:59:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:24,366 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 499 transitions. [2022-02-10 23:59:24,366 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) [2022-02-10 23:59:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 499 transitions. [2022-02-10 23:59:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:24,367 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:24,367 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:24,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-10 23:59:24,584 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 [2022-02-10 23:59:24,585 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:24,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1728684205, now seen corresponding path program 17 times [2022-02-10 23:59:24,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:24,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036189489] [2022-02-10 23:59:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:24,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:24,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036189489] [2022-02-10 23:59:24,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036189489] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:24,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027852476] [2022-02-10 23:59:24,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:24,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:24,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:24,692 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) [2022-02-10 23:59:24,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 23:59:24,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:59:24,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:24,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 23:59:24,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:25,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:25,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027852476] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:25,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:25,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-02-10 23:59:25,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704867153] [2022-02-10 23:59:25,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:25,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-10 23:59:25,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-10 23:59:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-02-10 23:59:25,211 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) [2022-02-10 23:59:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:26,217 INFO L93 Difference]: Finished difference Result 523 states and 1049 transitions. [2022-02-10 23:59:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 23:59:26,217 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 [2022-02-10 23:59:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:26,219 INFO L225 Difference]: With dead ends: 523 [2022-02-10 23:59:26,219 INFO L226 Difference]: Without dead ends: 493 [2022-02-10 23:59:26,219 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=669, Invalid=2301, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 23:59:26,219 INFO L934 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 [2022-02-10 23:59:26,220 INFO L935 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] [2022-02-10 23:59:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-02-10 23:59:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 241. [2022-02-10 23:59:26,223 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) [2022-02-10 23:59:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 534 transitions. [2022-02-10 23:59:26,224 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 534 transitions. Word has length 21 [2022-02-10 23:59:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:26,224 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 534 transitions. [2022-02-10 23:59:26,224 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) [2022-02-10 23:59:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 534 transitions. [2022-02-10 23:59:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:26,224 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:26,224 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:26,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:26,430 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 [2022-02-10 23:59:26,431 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1540640512, now seen corresponding path program 1 times [2022-02-10 23:59:26,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:26,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603286474] [2022-02-10 23:59:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:26,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:26,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603286474] [2022-02-10 23:59:26,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603286474] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:26,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982335886] [2022-02-10 23:59:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:26,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:26,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:26,620 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) [2022-02-10 23:59:26,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 23:59:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:26,640 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:26,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:27,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:27,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982335886] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:27,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:27,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 23:59:27,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641973763] [2022-02-10 23:59:27,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:27,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:59:27,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:59:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:27,578 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) [2022-02-10 23:59:30,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:30,252 INFO L93 Difference]: Finished difference Result 486 states and 945 transitions. [2022-02-10 23:59:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 23:59:30,253 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 [2022-02-10 23:59:30,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:30,254 INFO L225 Difference]: With dead ends: 486 [2022-02-10 23:59:30,254 INFO L226 Difference]: Without dead ends: 480 [2022-02-10 23:59:30,255 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1398, Invalid=9108, Unknown=0, NotChecked=0, Total=10506 [2022-02-10 23:59:30,256 INFO L934 BasicCegarLoop]: 49 mSDtfsCounter, 390 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:30,256 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 800 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:59:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-02-10 23:59:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 251. [2022-02-10 23:59:30,259 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) [2022-02-10 23:59:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 551 transitions. [2022-02-10 23:59:30,260 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 551 transitions. Word has length 21 [2022-02-10 23:59:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:30,260 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 551 transitions. [2022-02-10 23:59:30,260 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) [2022-02-10 23:59:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 551 transitions. [2022-02-10 23:59:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:30,260 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:30,261 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:30,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:30,476 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 [2022-02-10 23:59:30,476 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2081121866, now seen corresponding path program 2 times [2022-02-10 23:59:30,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:30,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579253304] [2022-02-10 23:59:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:30,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:30,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:30,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579253304] [2022-02-10 23:59:30,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579253304] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:30,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354083221] [2022-02-10 23:59:30,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:30,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:30,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:30,714 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) [2022-02-10 23:59:30,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 23:59:30,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:30,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:30,735 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:30,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:31,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:31,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354083221] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:31,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:31,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 23:59:31,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490832346] [2022-02-10 23:59:31,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:31,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:59:31,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:31,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:59:31,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2062, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:31,694 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) [2022-02-10 23:59:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:34,335 INFO L93 Difference]: Finished difference Result 502 states and 967 transitions. [2022-02-10 23:59:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 23:59:34,335 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 [2022-02-10 23:59:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:34,337 INFO L225 Difference]: With dead ends: 502 [2022-02-10 23:59:34,337 INFO L226 Difference]: Without dead ends: 496 [2022-02-10 23:59:34,337 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1338, Invalid=9168, Unknown=0, NotChecked=0, Total=10506 [2022-02-10 23:59:34,338 INFO L934 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 [2022-02-10 23:59:34,338 INFO L935 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] [2022-02-10 23:59:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-02-10 23:59:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 253. [2022-02-10 23:59:34,341 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) [2022-02-10 23:59:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 555 transitions. [2022-02-10 23:59:34,342 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 555 transitions. Word has length 21 [2022-02-10 23:59:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:34,342 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 555 transitions. [2022-02-10 23:59:34,342 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) [2022-02-10 23:59:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 555 transitions. [2022-02-10 23:59:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:34,342 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:34,342 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:34,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 23:59:34,555 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 [2022-02-10 23:59:34,555 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:34,556 INFO L85 PathProgramCache]: Analyzing trace with hash -938212254, now seen corresponding path program 3 times [2022-02-10 23:59:34,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:34,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553527819] [2022-02-10 23:59:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:34,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:34,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553527819] [2022-02-10 23:59:34,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553527819] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:34,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194791859] [2022-02-10 23:59:34,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:59:34,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:34,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:34,742 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) [2022-02-10 23:59:34,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 23:59:34,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 23:59:34,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:34,761 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:34,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:35,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:35,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194791859] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:35,679 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:35,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 23:59:35,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010356902] [2022-02-10 23:59:35,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:35,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:59:35,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:59:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2060, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:35,680 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) [2022-02-10 23:59:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:38,915 INFO L93 Difference]: Finished difference Result 517 states and 1004 transitions. [2022-02-10 23:59:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 23:59:38,916 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 [2022-02-10 23:59:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:38,917 INFO L225 Difference]: With dead ends: 517 [2022-02-10 23:59:38,917 INFO L226 Difference]: Without dead ends: 511 [2022-02-10 23:59:38,918 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1517, Invalid=10473, Unknown=0, NotChecked=0, Total=11990 [2022-02-10 23:59:38,918 INFO L934 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 [2022-02-10 23:59:38,918 INFO L935 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] [2022-02-10 23:59:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-02-10 23:59:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 255. [2022-02-10 23:59:38,922 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) [2022-02-10 23:59:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 559 transitions. [2022-02-10 23:59:38,922 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 559 transitions. Word has length 21 [2022-02-10 23:59:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:38,922 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 559 transitions. [2022-02-10 23:59:38,922 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) [2022-02-10 23:59:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 559 transitions. [2022-02-10 23:59:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:38,923 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:38,923 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:38,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-02-10 23:59:39,135 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 [2022-02-10 23:59:39,135 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash -46037548, now seen corresponding path program 4 times [2022-02-10 23:59:39,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:39,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369055913] [2022-02-10 23:59:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:39,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:39,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369055913] [2022-02-10 23:59:39,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369055913] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:39,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591018154] [2022-02-10 23:59:39,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:59:39,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:39,353 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) [2022-02-10 23:59:39,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 23:59:39,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:59:39,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:39,415 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:39,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:39,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:40,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591018154] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:40,354 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:40,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 23:59:40,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363682307] [2022-02-10 23:59:40,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:40,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:59:40,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:59:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:40,355 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) [2022-02-10 23:59:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:42,987 INFO L93 Difference]: Finished difference Result 517 states and 1006 transitions. [2022-02-10 23:59:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 23:59:42,987 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 [2022-02-10 23:59:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:42,989 INFO L225 Difference]: With dead ends: 517 [2022-02-10 23:59:42,989 INFO L226 Difference]: Without dead ends: 511 [2022-02-10 23:59:42,990 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1295, Invalid=8805, Unknown=0, NotChecked=0, Total=10100 [2022-02-10 23:59:42,990 INFO L934 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 [2022-02-10 23:59:42,990 INFO L935 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] [2022-02-10 23:59:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-02-10 23:59:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 257. [2022-02-10 23:59:42,994 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) [2022-02-10 23:59:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 563 transitions. [2022-02-10 23:59:42,994 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 563 transitions. Word has length 21 [2022-02-10 23:59:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:42,994 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 563 transitions. [2022-02-10 23:59:42,995 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) [2022-02-10 23:59:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 563 transitions. [2022-02-10 23:59:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:42,995 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:42,995 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:43,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-10 23:59:43,195 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 [2022-02-10 23:59:43,196 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1901720112, now seen corresponding path program 5 times [2022-02-10 23:59:43,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:43,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12608152] [2022-02-10 23:59:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:43,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:43,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:43,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12608152] [2022-02-10 23:59:43,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12608152] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:43,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888406388] [2022-02-10 23:59:43,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:59:43,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:43,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:43,440 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) [2022-02-10 23:59:43,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 23:59:43,459 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:43,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:43,460 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:43,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:43,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:44,427 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888406388] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:44,427 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:44,427 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 23:59:44,427 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340330197] [2022-02-10 23:59:44,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:44,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:59:44,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:59:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:44,428 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) [2022-02-10 23:59:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:48,271 INFO L93 Difference]: Finished difference Result 573 states and 1108 transitions. [2022-02-10 23:59:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 23:59:48,272 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 [2022-02-10 23:59:48,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:48,273 INFO L225 Difference]: With dead ends: 573 [2022-02-10 23:59:48,273 INFO L226 Difference]: Without dead ends: 567 [2022-02-10 23:59:48,274 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4388 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2056, Invalid=13694, Unknown=0, NotChecked=0, Total=15750 [2022-02-10 23:59:48,274 INFO L934 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:48,275 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1055 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 23:59:48,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-02-10 23:59:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 265. [2022-02-10 23:59:48,278 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) [2022-02-10 23:59:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 581 transitions. [2022-02-10 23:59:48,279 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 581 transitions. Word has length 21 [2022-02-10 23:59:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:48,279 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 581 transitions. [2022-02-10 23:59:48,279 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) [2022-02-10 23:59:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 581 transitions. [2022-02-10 23:59:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:48,280 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:48,280 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:48,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-10 23:59:48,495 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 [2022-02-10 23:59:48,495 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1909042932, now seen corresponding path program 6 times [2022-02-10 23:59:48,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:48,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873952887] [2022-02-10 23:59:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:48,672 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:48,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873952887] [2022-02-10 23:59:48,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873952887] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:48,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704528603] [2022-02-10 23:59:48,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:59:48,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:48,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:48,673 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) [2022-02-10 23:59:48,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 23:59:48,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 23:59:48,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:48,693 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:48,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:49,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:49,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704528603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:49,543 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:49,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-10 23:59:49,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493734942] [2022-02-10 23:59:49,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:49,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-10 23:59:49,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-10 23:59:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2022-02-10 23:59:49,544 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) [2022-02-10 23:59:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:52,378 INFO L93 Difference]: Finished difference Result 586 states and 1145 transitions. [2022-02-10 23:59:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 23:59:52,378 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 [2022-02-10 23:59:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:52,380 INFO L225 Difference]: With dead ends: 586 [2022-02-10 23:59:52,380 INFO L226 Difference]: Without dead ends: 572 [2022-02-10 23:59:52,381 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1666, Invalid=10990, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 23:59:52,385 INFO L934 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 [2022-02-10 23:59:52,386 INFO L935 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] [2022-02-10 23:59:52,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-02-10 23:59:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 265. [2022-02-10 23:59:52,390 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) [2022-02-10 23:59:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 579 transitions. [2022-02-10 23:59:52,390 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 579 transitions. Word has length 21 [2022-02-10 23:59:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:52,392 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 579 transitions. [2022-02-10 23:59:52,392 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) [2022-02-10 23:59:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 579 transitions. [2022-02-10 23:59:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:52,392 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:52,392 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:52,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-10 23:59:52,599 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 [2022-02-10 23:59:52,599 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1872828558, now seen corresponding path program 7 times [2022-02-10 23:59:52,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:52,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828843066] [2022-02-10 23:59:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:52,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:52,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828843066] [2022-02-10 23:59:52,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828843066] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:52,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315095796] [2022-02-10 23:59:52,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:59:52,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:52,791 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) [2022-02-10 23:59:52,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 23:59:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:52,809 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:52,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:53,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:53,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315095796] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:53,703 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:53,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 23:59:53,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949118608] [2022-02-10 23:59:53,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:53,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:59:53,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:53,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:59:53,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:53,704 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) [2022-02-10 23:59:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:59:56,547 INFO L93 Difference]: Finished difference Result 523 states and 1024 transitions. [2022-02-10 23:59:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 23:59:56,547 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 [2022-02-10 23:59:56,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:59:56,549 INFO L225 Difference]: With dead ends: 523 [2022-02-10 23:59:56,549 INFO L226 Difference]: Without dead ends: 520 [2022-02-10 23:59:56,550 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1342, Invalid=10000, Unknown=0, NotChecked=0, Total=11342 [2022-02-10 23:59:56,550 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 467 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:59:56,550 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 750 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 23:59:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-02-10 23:59:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 270. [2022-02-10 23:59:56,554 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) [2022-02-10 23:59:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 589 transitions. [2022-02-10 23:59:56,554 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 589 transitions. Word has length 21 [2022-02-10 23:59:56,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:59:56,554 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 589 transitions. [2022-02-10 23:59:56,555 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) [2022-02-10 23:59:56,555 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 589 transitions. [2022-02-10 23:59:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 23:59:56,555 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:59:56,555 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:59:56,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 23:59:56,771 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 [2022-02-10 23:59:56,771 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 23:59:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:59:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash -729918946, now seen corresponding path program 8 times [2022-02-10 23:59:56,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:59:56,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882141412] [2022-02-10 23:59:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:59:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:59:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:59:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:56,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:59:56,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882141412] [2022-02-10 23:59:56,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882141412] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:59:56,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107139950] [2022-02-10 23:59:56,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:59:56,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:59:56,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:59:56,957 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) [2022-02-10 23:59:56,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 23:59:56,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:59:56,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:59:56,978 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-10 23:59:56,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:59:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:57,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:59:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:59:57,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107139950] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:59:57,876 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:59:57,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-10 23:59:57,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306566547] [2022-02-10 23:59:57,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:59:57,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-10 23:59:57,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:59:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-10 23:59:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2061, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 23:59:57,877 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) [2022-02-11 00:00:01,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:01,175 INFO L93 Difference]: Finished difference Result 548 states and 1075 transitions. [2022-02-11 00:00:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-11 00:00:01,176 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 [2022-02-11 00:00:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:01,177 INFO L225 Difference]: With dead ends: 548 [2022-02-11 00:00:01,177 INFO L226 Difference]: Without dead ends: 545 [2022-02-11 00:00:01,179 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1545, Invalid=11795, Unknown=0, NotChecked=0, Total=13340 [2022-02-11 00:00:01,185 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 371 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:01,185 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 773 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:00:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-02-11 00:00:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 272. [2022-02-11 00:00:01,193 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) [2022-02-11 00:00:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 593 transitions. [2022-02-11 00:00:01,194 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 593 transitions. Word has length 21 [2022-02-11 00:00:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:01,194 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 593 transitions. [2022-02-11 00:00:01,194 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) [2022-02-11 00:00:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 593 transitions. [2022-02-11 00:00:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:01,195 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:01,195 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:01,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:01,403 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 [2022-02-11 00:00:01,403 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 162255760, now seen corresponding path program 9 times [2022-02-11 00:00:01,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:01,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151628613] [2022-02-11 00:00:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:01,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:01,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151628613] [2022-02-11 00:00:01,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151628613] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:01,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689891222] [2022-02-11 00:00:01,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:00:01,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:01,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:01,610 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) [2022-02-11 00:00:01,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-11 00:00:01,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:00:01,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:01,629 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:01,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:02,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:02,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689891222] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:02,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:02,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:00:02,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571369776] [2022-02-11 00:00:02,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:02,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:00:02,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:00:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:00:02,620 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) [2022-02-11 00:00:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:05,539 INFO L93 Difference]: Finished difference Result 549 states and 1078 transitions. [2022-02-11 00:00:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-11 00:00:05,540 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 [2022-02-11 00:00:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:05,541 INFO L225 Difference]: With dead ends: 549 [2022-02-11 00:00:05,541 INFO L226 Difference]: Without dead ends: 546 [2022-02-11 00:00:05,542 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1327, Invalid=9803, Unknown=0, NotChecked=0, Total=11130 [2022-02-11 00:00:05,542 INFO L934 BasicCegarLoop]: 53 mSDtfsCounter, 448 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:05,542 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 779 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:00:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-02-11 00:00:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 270. [2022-02-11 00:00:05,547 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) [2022-02-11 00:00:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 589 transitions. [2022-02-11 00:00:05,548 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 589 transitions. Word has length 21 [2022-02-11 00:00:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:05,548 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 589 transitions. [2022-02-11 00:00:05,548 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) [2022-02-11 00:00:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 589 transitions. [2022-02-11 00:00:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:05,548 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:05,548 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:05,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:05,766 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 [2022-02-11 00:00:05,767 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1693426804, now seen corresponding path program 10 times [2022-02-11 00:00:05,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:05,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338702275] [2022-02-11 00:00:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:05,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:05,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:05,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338702275] [2022-02-11 00:00:05,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338702275] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:05,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536998693] [2022-02-11 00:00:05,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:00:05,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:05,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:05,989 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) [2022-02-11 00:00:05,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-11 00:00:06,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:00:06,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:06,010 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:06,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:06,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:06,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536998693] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:06,963 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:06,963 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:00:06,963 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143776894] [2022-02-11 00:00:06,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:06,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:00:06,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:00:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:00:06,964 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) [2022-02-11 00:00:11,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:11,463 INFO L93 Difference]: Finished difference Result 574 states and 1130 transitions. [2022-02-11 00:00:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-11 00:00:11,464 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 [2022-02-11 00:00:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:11,466 INFO L225 Difference]: With dead ends: 574 [2022-02-11 00:00:11,466 INFO L226 Difference]: Without dead ends: 571 [2022-02-11 00:00:11,467 INFO L933 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 [2022-02-11 00:00:11,467 INFO L934 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:11,467 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 895 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:00:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-02-11 00:00:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 276. [2022-02-11 00:00:11,471 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) [2022-02-11 00:00:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 601 transitions. [2022-02-11 00:00:11,472 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 601 transitions. Word has length 21 [2022-02-11 00:00:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:11,472 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 601 transitions. [2022-02-11 00:00:11,472 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) [2022-02-11 00:00:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 601 transitions. [2022-02-11 00:00:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:11,473 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:11,473 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:11,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-02-11 00:00:11,683 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 [2022-02-11 00:00:11,684 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1700749624, now seen corresponding path program 11 times [2022-02-11 00:00:11,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:11,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921683917] [2022-02-11 00:00:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:11,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:11,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921683917] [2022-02-11 00:00:11,885 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921683917] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:11,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745806180] [2022-02-11 00:00:11,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:00:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:11,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:11,886 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) [2022-02-11 00:00:11,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-11 00:00:11,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:00:11,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:11,910 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:11,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:12,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:12,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745806180] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:12,899 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:12,899 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:00:12,899 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551023931] [2022-02-11 00:00:12,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:12,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:00:12,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:00:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:00:12,900 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) [2022-02-11 00:00:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:16,636 INFO L93 Difference]: Finished difference Result 602 states and 1187 transitions. [2022-02-11 00:00:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-11 00:00:16,637 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 [2022-02-11 00:00:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:16,639 INFO L225 Difference]: With dead ends: 602 [2022-02-11 00:00:16,639 INFO L226 Difference]: Without dead ends: 595 [2022-02-11 00:00:16,641 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3808 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1657, Invalid=11915, Unknown=0, NotChecked=0, Total=13572 [2022-02-11 00:00:16,641 INFO L934 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 [2022-02-11 00:00:16,641 INFO L935 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] [2022-02-11 00:00:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-02-11 00:00:16,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 282. [2022-02-11 00:00:16,647 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) [2022-02-11 00:00:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 614 transitions. [2022-02-11 00:00:16,647 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 614 transitions. Word has length 21 [2022-02-11 00:00:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:16,647 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 614 transitions. [2022-02-11 00:00:16,648 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) [2022-02-11 00:00:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 614 transitions. [2022-02-11 00:00:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:16,648 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:16,648 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:16,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:16,855 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 [2022-02-11 00:00:16,856 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:16,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash 395681954, now seen corresponding path program 12 times [2022-02-11 00:00:16,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:16,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72272492] [2022-02-11 00:00:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:17,138 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:17,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72272492] [2022-02-11 00:00:17,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72272492] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:17,138 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382277664] [2022-02-11 00:00:17,138 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:00:17,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:17,140 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) [2022-02-11 00:00:17,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-11 00:00:17,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:00:17,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:17,160 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:17,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:17,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:18,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382277664] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:18,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:18,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:00:18,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255861865] [2022-02-11 00:00:18,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:18,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:00:18,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:00:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:00:18,204 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) [2022-02-11 00:00:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:23,538 INFO L93 Difference]: Finished difference Result 589 states and 1149 transitions. [2022-02-11 00:00:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-11 00:00:23,538 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 [2022-02-11 00:00:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:23,540 INFO L225 Difference]: With dead ends: 589 [2022-02-11 00:00:23,540 INFO L226 Difference]: Without dead ends: 586 [2022-02-11 00:00:23,541 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5183 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2047, Invalid=15509, Unknown=0, NotChecked=0, Total=17556 [2022-02-11 00:00:23,541 INFO L934 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:23,541 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 889 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:00:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-02-11 00:00:23,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 286. [2022-02-11 00:00:23,546 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) [2022-02-11 00:00:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 623 transitions. [2022-02-11 00:00:23,546 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 623 transitions. Word has length 21 [2022-02-11 00:00:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:23,547 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 623 transitions. [2022-02-11 00:00:23,547 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) [2022-02-11 00:00:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 623 transitions. [2022-02-11 00:00:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:23,547 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:23,547 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:23,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:23,763 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 [2022-02-11 00:00:23,764 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1287856660, now seen corresponding path program 13 times [2022-02-11 00:00:23,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:23,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641843662] [2022-02-11 00:00:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:23,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:23,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641843662] [2022-02-11 00:00:23,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641843662] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:23,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134049562] [2022-02-11 00:00:23,969 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:00:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:23,970 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) [2022-02-11 00:00:23,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-11 00:00:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:23,994 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:23,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:24,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:25,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134049562] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:25,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:25,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:00:25,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558518241] [2022-02-11 00:00:25,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:25,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:00:25,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:00:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:00:25,007 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) [2022-02-11 00:00:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:29,805 INFO L93 Difference]: Finished difference Result 595 states and 1159 transitions. [2022-02-11 00:00:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-11 00:00:29,805 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 [2022-02-11 00:00:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:29,807 INFO L225 Difference]: With dead ends: 595 [2022-02-11 00:00:29,807 INFO L226 Difference]: Without dead ends: 592 [2022-02-11 00:00:29,808 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4338 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1856, Invalid=13396, Unknown=0, NotChecked=0, Total=15252 [2022-02-11 00:00:29,808 INFO L934 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:29,808 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1115 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 00:00:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-02-11 00:00:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 284. [2022-02-11 00:00:29,813 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) [2022-02-11 00:00:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 619 transitions. [2022-02-11 00:00:29,813 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 619 transitions. Word has length 21 [2022-02-11 00:00:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:29,813 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 619 transitions. [2022-02-11 00:00:29,814 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) [2022-02-11 00:00:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 619 transitions. [2022-02-11 00:00:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:29,814 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:29,814 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:29,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-11 00:00:30,014 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 [2022-02-11 00:00:30,015 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -567825904, now seen corresponding path program 14 times [2022-02-11 00:00:30,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:30,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128697099] [2022-02-11 00:00:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:30,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:30,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:30,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128697099] [2022-02-11 00:00:30,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128697099] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:30,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731719141] [2022-02-11 00:00:30,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:00:30,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:30,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:30,216 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) [2022-02-11 00:00:30,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-11 00:00:30,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:00:30,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:30,236 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:30,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:30,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:31,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731719141] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:31,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:31,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:00:31,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50508692] [2022-02-11 00:00:31,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:31,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:00:31,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:00:31,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:00:31,225 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) [2022-02-11 00:00:37,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:37,356 INFO L93 Difference]: Finished difference Result 642 states and 1253 transitions. [2022-02-11 00:00:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-11 00:00:37,356 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:00:37,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:37,358 INFO L225 Difference]: With dead ends: 642 [2022-02-11 00:00:37,358 INFO L226 Difference]: Without dead ends: 639 [2022-02-11 00:00:37,359 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6831 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2630, Invalid=19422, Unknown=0, NotChecked=0, Total=22052 [2022-02-11 00:00:37,360 INFO L934 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 [2022-02-11 00:00:37,360 INFO L935 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] [2022-02-11 00:00:37,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-02-11 00:00:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 290. [2022-02-11 00:00:37,364 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) [2022-02-11 00:00:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 631 transitions. [2022-02-11 00:00:37,365 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 631 transitions. Word has length 21 [2022-02-11 00:00:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:37,365 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 631 transitions. [2022-02-11 00:00:37,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:00:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 631 transitions. [2022-02-11 00:00:37,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:37,366 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:37,366 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:37,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:37,567 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 [2022-02-11 00:00:37,567 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash -575148724, now seen corresponding path program 15 times [2022-02-11 00:00:37,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:37,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738537332] [2022-02-11 00:00:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:37,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:37,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:37,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738537332] [2022-02-11 00:00:37,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738537332] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:37,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348546461] [2022-02-11 00:00:37,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:00:37,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:37,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:37,753 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) [2022-02-11 00:00:37,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-11 00:00:37,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:00:37,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:37,771 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:37,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:38,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:38,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348546461] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:38,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:38,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:00:38,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61525320] [2022-02-11 00:00:38,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:38,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:00:38,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:00:38,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1960, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:00:38,693 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) [2022-02-11 00:00:43,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:43,423 INFO L93 Difference]: Finished difference Result 684 states and 1339 transitions. [2022-02-11 00:00:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-11 00:00:43,423 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 [2022-02-11 00:00:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:43,425 INFO L225 Difference]: With dead ends: 684 [2022-02-11 00:00:43,425 INFO L226 Difference]: Without dead ends: 677 [2022-02-11 00:00:43,426 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6076 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2418, Invalid=17322, Unknown=0, NotChecked=0, Total=19740 [2022-02-11 00:00:43,426 INFO L934 BasicCegarLoop]: 58 mSDtfsCounter, 534 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:43,426 INFO L935 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] [2022-02-11 00:00:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-02-11 00:00:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 286. [2022-02-11 00:00:43,432 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) [2022-02-11 00:00:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 624 transitions. [2022-02-11 00:00:43,432 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 624 transitions. Word has length 21 [2022-02-11 00:00:43,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:43,432 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 624 transitions. [2022-02-11 00:00:43,432 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) [2022-02-11 00:00:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 624 transitions. [2022-02-11 00:00:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:43,433 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:43,433 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:43,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-11 00:00:43,633 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 [2022-02-11 00:00:43,634 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:43,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:43,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1047410512, now seen corresponding path program 16 times [2022-02-11 00:00:43,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:43,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353716176] [2022-02-11 00:00:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:44,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:44,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353716176] [2022-02-11 00:00:44,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353716176] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:44,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766966041] [2022-02-11 00:00:44,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:00:44,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:44,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:44,070 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) [2022-02-11 00:00:44,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-11 00:00:44,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:00:44,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:44,102 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:44,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:44,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:45,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766966041] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:45,075 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:45,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:00:45,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786800603] [2022-02-11 00:00:45,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:45,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:00:45,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:00:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:00:45,076 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) [2022-02-11 00:00:49,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:49,220 INFO L93 Difference]: Finished difference Result 619 states and 1216 transitions. [2022-02-11 00:00:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-11 00:00:49,221 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 [2022-02-11 00:00:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:49,223 INFO L225 Difference]: With dead ends: 619 [2022-02-11 00:00:49,223 INFO L226 Difference]: Without dead ends: 616 [2022-02-11 00:00:49,223 INFO L933 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 [2022-02-11 00:00:49,225 INFO L934 BasicCegarLoop]: 51 mSDtfsCounter, 397 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:00:49,225 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 924 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:00:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-02-11 00:00:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 288. [2022-02-11 00:00:49,230 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) [2022-02-11 00:00:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 629 transitions. [2022-02-11 00:00:49,230 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 629 transitions. Word has length 21 [2022-02-11 00:00:49,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:49,230 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 629 transitions. [2022-02-11 00:00:49,231 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) [2022-02-11 00:00:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 629 transitions. [2022-02-11 00:00:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:49,231 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:49,231 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:49,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-02-11 00:00:49,431 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 [2022-02-11 00:00:49,432 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash -808272052, now seen corresponding path program 17 times [2022-02-11 00:00:49,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:49,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583652417] [2022-02-11 00:00:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:49,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:49,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:49,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583652417] [2022-02-11 00:00:49,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583652417] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:49,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484954820] [2022-02-11 00:00:49,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:00:49,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:49,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:49,704 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) [2022-02-11 00:00:49,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-11 00:00:49,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:00:49,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:49,726 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:49,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:50,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:50,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484954820] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:50,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:50,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:00:50,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813878757] [2022-02-11 00:00:50,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:50,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:00:50,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:00:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:00:50,762 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) [2022-02-11 00:00:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:00:56,687 INFO L93 Difference]: Finished difference Result 670 states and 1316 transitions. [2022-02-11 00:00:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-11 00:00:56,688 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:00:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:00:56,692 INFO L225 Difference]: With dead ends: 670 [2022-02-11 00:00:56,692 INFO L226 Difference]: Without dead ends: 667 [2022-02-11 00:00:56,693 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6529 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2632, Invalid=18248, Unknown=0, NotChecked=0, Total=20880 [2022-02-11 00:00:56,694 INFO L934 BasicCegarLoop]: 55 mSDtfsCounter, 483 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-02-11 00:00:56,694 INFO L935 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] [2022-02-11 00:00:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-02-11 00:00:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 292. [2022-02-11 00:00:56,699 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) [2022-02-11 00:00:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 637 transitions. [2022-02-11 00:00:56,700 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 637 transitions. Word has length 21 [2022-02-11 00:00:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:00:56,700 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 637 transitions. [2022-02-11 00:00:56,700 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) [2022-02-11 00:00:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 637 transitions. [2022-02-11 00:00:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:00:56,700 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:00:56,700 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:00:56,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-02-11 00:00:56,916 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 [2022-02-11 00:00:56,917 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:00:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:00:56,917 INFO L85 PathProgramCache]: Analyzing trace with hash -815594872, now seen corresponding path program 18 times [2022-02-11 00:00:56,917 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:00:56,917 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596344364] [2022-02-11 00:00:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:00:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:00:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:00:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:57,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:00:57,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596344364] [2022-02-11 00:00:57,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596344364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:00:57,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780436030] [2022-02-11 00:00:57,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:00:57,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:00:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:00:57,124 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) [2022-02-11 00:00:57,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-11 00:00:57,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:00:57,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:00:57,144 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:00:57,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:00:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:57,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:00:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:00:58,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780436030] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:00:58,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:00:58,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:00:58,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476191594] [2022-02-11 00:00:58,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:00:58,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:00:58,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:00:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:00:58,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:00:58,163 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) [2022-02-11 00:01:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:03,195 INFO L93 Difference]: Finished difference Result 704 states and 1385 transitions. [2022-02-11 00:01:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-11 00:01:03,196 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 [2022-02-11 00:01:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:03,197 INFO L225 Difference]: With dead ends: 704 [2022-02-11 00:01:03,197 INFO L226 Difference]: Without dead ends: 697 [2022-02-11 00:01:03,198 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6109 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2558, Invalid=16902, Unknown=0, NotChecked=0, Total=19460 [2022-02-11 00:01:03,198 INFO L934 BasicCegarLoop]: 53 mSDtfsCounter, 558 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:03,198 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 734 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:01:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-02-11 00:01:03,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 290. [2022-02-11 00:01:03,203 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) [2022-02-11 00:01:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 634 transitions. [2022-02-11 00:01:03,203 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 634 transitions. Word has length 21 [2022-02-11 00:01:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:03,203 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 634 transitions. [2022-02-11 00:01:03,204 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) [2022-02-11 00:01:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 634 transitions. [2022-02-11 00:01:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:03,204 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:03,204 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:03,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:03,408 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 [2022-02-11 00:01:03,408 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash -64553140, now seen corresponding path program 19 times [2022-02-11 00:01:03,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:03,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309040851] [2022-02-11 00:01:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:03,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:03,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309040851] [2022-02-11 00:01:03,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309040851] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:03,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870526186] [2022-02-11 00:01:03,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:01:03,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:03,604 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) [2022-02-11 00:01:03,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-11 00:01:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:03,626 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:03,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:04,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:04,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870526186] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:04,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:04,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:04,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023851368] [2022-02-11 00:01:04,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:04,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:04,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:04,656 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) [2022-02-11 00:01:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:14,294 INFO L93 Difference]: Finished difference Result 822 states and 1606 transitions. [2022-02-11 00:01:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-02-11 00:01:14,294 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 [2022-02-11 00:01:14,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:14,296 INFO L225 Difference]: With dead ends: 822 [2022-02-11 00:01:14,296 INFO L226 Difference]: Without dead ends: 816 [2022-02-11 00:01:14,297 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16291 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=5572, Invalid=38738, Unknown=0, NotChecked=0, Total=44310 [2022-02-11 00:01:14,297 INFO L934 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:14,298 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 825 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:01:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2022-02-11 00:01:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 297. [2022-02-11 00:01:14,303 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) [2022-02-11 00:01:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 653 transitions. [2022-02-11 00:01:14,303 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 653 transitions. Word has length 21 [2022-02-11 00:01:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:14,304 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 653 transitions. [2022-02-11 00:01:14,304 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) [2022-02-11 00:01:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 653 transitions. [2022-02-11 00:01:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:14,304 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:14,304 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:14,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-11 00:01:14,504 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 [2022-02-11 00:01:14,505 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash -71875960, now seen corresponding path program 20 times [2022-02-11 00:01:14,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:14,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422236522] [2022-02-11 00:01:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:14,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:14,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422236522] [2022-02-11 00:01:14,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422236522] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:14,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381110220] [2022-02-11 00:01:14,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:01:14,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:14,683 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) [2022-02-11 00:01:14,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-11 00:01:14,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:01:14,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:14,702 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:14,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:15,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:15,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381110220] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:15,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:15,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:01:15,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661930117] [2022-02-11 00:01:15,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:15,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:01:15,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:15,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:01:15,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:01:15,620 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) [2022-02-11 00:01:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:24,728 INFO L93 Difference]: Finished difference Result 883 states and 1727 transitions. [2022-02-11 00:01:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-11 00:01:24,728 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 [2022-02-11 00:01:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:24,730 INFO L225 Difference]: With dead ends: 883 [2022-02-11 00:01:24,730 INFO L226 Difference]: Without dead ends: 869 [2022-02-11 00:01:24,733 INFO L933 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 [2022-02-11 00:01:24,733 INFO L934 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 [2022-02-11 00:01:24,733 INFO L935 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] [2022-02-11 00:01:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-02-11 00:01:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 304. [2022-02-11 00:01:24,741 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) [2022-02-11 00:01:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 678 transitions. [2022-02-11 00:01:24,742 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 678 transitions. Word has length 21 [2022-02-11 00:01:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:24,742 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 678 transitions. [2022-02-11 00:01:24,742 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) [2022-02-11 00:01:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 678 transitions. [2022-02-11 00:01:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:24,743 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:24,743 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:24,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:24,943 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 [2022-02-11 00:01:24,944 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2039413384, now seen corresponding path program 21 times [2022-02-11 00:01:24,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:24,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753480309] [2022-02-11 00:01:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:24,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:25,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:25,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753480309] [2022-02-11 00:01:25,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753480309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:25,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721982103] [2022-02-11 00:01:25,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:01:25,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:25,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:25,151 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) [2022-02-11 00:01:25,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-11 00:01:25,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:01:25,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:25,171 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:25,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:25,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:26,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721982103] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:26,164 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:26,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:01:26,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239744250] [2022-02-11 00:01:26,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:26,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:01:26,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:01:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:01:26,165 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) [2022-02-11 00:01:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:33,455 INFO L93 Difference]: Finished difference Result 823 states and 1648 transitions. [2022-02-11 00:01:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-11 00:01:33,456 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 [2022-02-11 00:01:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:33,457 INFO L225 Difference]: With dead ends: 823 [2022-02-11 00:01:33,457 INFO L226 Difference]: Without dead ends: 802 [2022-02-11 00:01:33,458 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10340 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4207, Invalid=25205, Unknown=0, NotChecked=0, Total=29412 [2022-02-11 00:01:33,458 INFO L934 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 [2022-02-11 00:01:33,458 INFO L935 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] [2022-02-11 00:01:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-02-11 00:01:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 302. [2022-02-11 00:01:33,463 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) [2022-02-11 00:01:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 671 transitions. [2022-02-11 00:01:33,464 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 671 transitions. Word has length 21 [2022-02-11 00:01:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:33,464 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 671 transitions. [2022-02-11 00:01:33,464 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) [2022-02-11 00:01:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 671 transitions. [2022-02-11 00:01:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:33,465 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:33,465 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:33,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:33,680 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 [2022-02-11 00:01:33,680 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1363186158, now seen corresponding path program 22 times [2022-02-11 00:01:33,681 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:33,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442871075] [2022-02-11 00:01:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:33,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:33,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442871075] [2022-02-11 00:01:33,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442871075] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:33,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702522472] [2022-02-11 00:01:33,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:01:33,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:33,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:33,873 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) [2022-02-11 00:01:33,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-11 00:01:33,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:01:33,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:33,893 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:34,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:34,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702522472] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:34,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:34,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:34,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116431051] [2022-02-11 00:01:34,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:34,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:34,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:34,854 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) [2022-02-11 00:01:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:36,918 INFO L93 Difference]: Finished difference Result 541 states and 1090 transitions. [2022-02-11 00:01:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-11 00:01:36,918 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 [2022-02-11 00:01:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:36,919 INFO L225 Difference]: With dead ends: 541 [2022-02-11 00:01:36,919 INFO L226 Difference]: Without dead ends: 538 [2022-02-11 00:01:36,920 INFO L933 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 [2022-02-11 00:01:36,920 INFO L934 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 [2022-02-11 00:01:36,920 INFO L935 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] [2022-02-11 00:01:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-02-11 00:01:36,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 307. [2022-02-11 00:01:36,924 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) [2022-02-11 00:01:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 682 transitions. [2022-02-11 00:01:36,925 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 682 transitions. Word has length 21 [2022-02-11 00:01:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:36,925 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 682 transitions. [2022-02-11 00:01:36,925 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) [2022-02-11 00:01:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 682 transitions. [2022-02-11 00:01:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:36,926 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:36,926 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:36,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:37,141 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 [2022-02-11 00:01:37,142 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1788871526, now seen corresponding path program 23 times [2022-02-11 00:01:37,142 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:37,142 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195536697] [2022-02-11 00:01:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:37,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:37,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:37,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195536697] [2022-02-11 00:01:37,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195536697] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:37,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758838207] [2022-02-11 00:01:37,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:01:37,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:37,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:37,329 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) [2022-02-11 00:01:37,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-11 00:01:37,348 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:01:37,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:37,349 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:37,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:37,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:38,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758838207] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:38,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:38,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:38,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727914247] [2022-02-11 00:01:38,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:38,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:38,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2057, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:38,370 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) [2022-02-11 00:01:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:40,872 INFO L93 Difference]: Finished difference Result 558 states and 1127 transitions. [2022-02-11 00:01:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-11 00:01:40,873 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 [2022-02-11 00:01:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:40,875 INFO L225 Difference]: With dead ends: 558 [2022-02-11 00:01:40,875 INFO L226 Difference]: Without dead ends: 555 [2022-02-11 00:01:40,875 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1063, Invalid=8249, Unknown=0, NotChecked=0, Total=9312 [2022-02-11 00:01:40,875 INFO L934 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 [2022-02-11 00:01:40,876 INFO L935 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] [2022-02-11 00:01:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-02-11 00:01:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 309. [2022-02-11 00:01:40,880 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) [2022-02-11 00:01:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 686 transitions. [2022-02-11 00:01:40,880 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 686 transitions. Word has length 21 [2022-02-11 00:01:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:40,880 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 686 transitions. [2022-02-11 00:01:40,880 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) [2022-02-11 00:01:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 686 transitions. [2022-02-11 00:01:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:40,881 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:40,881 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:40,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:41,081 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 [2022-02-11 00:01:41,082 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:41,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash -896696820, now seen corresponding path program 24 times [2022-02-11 00:01:41,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:41,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580971912] [2022-02-11 00:01:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:41,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:41,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580971912] [2022-02-11 00:01:41,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580971912] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:41,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924875121] [2022-02-11 00:01:41,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:01:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:41,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:41,274 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) [2022-02-11 00:01:41,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-11 00:01:41,295 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:01:41,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:41,295 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:41,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:41,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:42,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924875121] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:42,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:42,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:42,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317686017] [2022-02-11 00:01:42,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:42,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:42,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:42,389 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) [2022-02-11 00:01:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:44,483 INFO L93 Difference]: Finished difference Result 559 states and 1130 transitions. [2022-02-11 00:01:44,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-11 00:01:44,484 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 [2022-02-11 00:01:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:44,485 INFO L225 Difference]: With dead ends: 559 [2022-02-11 00:01:44,485 INFO L226 Difference]: Without dead ends: 556 [2022-02-11 00:01:44,486 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=952, Invalid=7238, Unknown=0, NotChecked=0, Total=8190 [2022-02-11 00:01:44,486 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 243 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:44,486 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 723 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:01:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-02-11 00:01:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 311. [2022-02-11 00:01:44,491 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) [2022-02-11 00:01:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 690 transitions. [2022-02-11 00:01:44,492 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 690 transitions. Word has length 21 [2022-02-11 00:01:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:44,492 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 690 transitions. [2022-02-11 00:01:44,492 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) [2022-02-11 00:01:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 690 transitions. [2022-02-11 00:01:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:44,493 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:44,493 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:44,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-02-11 00:01:44,693 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 [2022-02-11 00:01:44,694 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1542587912, now seen corresponding path program 25 times [2022-02-11 00:01:44,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:44,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815847274] [2022-02-11 00:01:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:44,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:44,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815847274] [2022-02-11 00:01:44,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815847274] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:44,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226725393] [2022-02-11 00:01:44,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:01:44,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:44,972 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) [2022-02-11 00:01:44,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-11 00:01:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:44,996 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:44,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:45,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:46,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226725393] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:46,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:46,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:46,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427583836] [2022-02-11 00:01:46,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:46,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:46,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:46,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:46,026 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) [2022-02-11 00:01:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:48,805 INFO L93 Difference]: Finished difference Result 578 states and 1176 transitions. [2022-02-11 00:01:48,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-11 00:01:48,806 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 [2022-02-11 00:01:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:48,807 INFO L225 Difference]: With dead ends: 578 [2022-02-11 00:01:48,807 INFO L226 Difference]: Without dead ends: 575 [2022-02-11 00:01:48,807 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1290, Invalid=9840, Unknown=0, NotChecked=0, Total=11130 [2022-02-11 00:01:48,807 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 286 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-02-11 00:01:48,807 INFO L935 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] [2022-02-11 00:01:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-02-11 00:01:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 305. [2022-02-11 00:01:48,812 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) [2022-02-11 00:01:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 678 transitions. [2022-02-11 00:01:48,812 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 678 transitions. Word has length 21 [2022-02-11 00:01:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:48,812 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 678 transitions. [2022-02-11 00:01:48,812 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) [2022-02-11 00:01:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 678 transitions. [2022-02-11 00:01:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:48,813 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:48,813 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:48,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-11 00:01:49,013 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 [2022-02-11 00:01:49,013 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:49,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash -663270626, now seen corresponding path program 26 times [2022-02-11 00:01:49,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:49,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550163116] [2022-02-11 00:01:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:49,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:49,210 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:49,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550163116] [2022-02-11 00:01:49,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550163116] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:49,210 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328413027] [2022-02-11 00:01:49,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:01:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:49,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:49,212 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) [2022-02-11 00:01:49,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-11 00:01:49,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:01:49,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:49,233 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:49,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:49,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:50,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328413027] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:50,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:50,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:50,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110412206] [2022-02-11 00:01:50,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:50,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:50,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2054, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:50,297 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) [2022-02-11 00:01:53,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:53,569 INFO L93 Difference]: Finished difference Result 569 states and 1152 transitions. [2022-02-11 00:01:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-11 00:01:53,569 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 [2022-02-11 00:01:53,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:53,570 INFO L225 Difference]: With dead ends: 569 [2022-02-11 00:01:53,570 INFO L226 Difference]: Without dead ends: 566 [2022-02-11 00:01:53,571 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3314 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1407, Invalid=10803, Unknown=0, NotChecked=0, Total=12210 [2022-02-11 00:01:53,571 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 298 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:53,571 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 648 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:01:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-02-11 00:01:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 309. [2022-02-11 00:01:53,576 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) [2022-02-11 00:01:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 687 transitions. [2022-02-11 00:01:53,576 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 687 transitions. Word has length 21 [2022-02-11 00:01:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:53,576 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 687 transitions. [2022-02-11 00:01:53,576 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) [2022-02-11 00:01:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 687 transitions. [2022-02-11 00:01:53,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:53,577 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:53,577 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:53,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-11 00:01:53,777 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 [2022-02-11 00:01:53,778 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash 228904080, now seen corresponding path program 27 times [2022-02-11 00:01:53,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:53,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600109150] [2022-02-11 00:01:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:53,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:53,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:53,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600109150] [2022-02-11 00:01:53,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600109150] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:53,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707929987] [2022-02-11 00:01:53,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:01:53,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:53,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:53,992 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) [2022-02-11 00:01:53,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-11 00:01:54,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:01:54,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:54,012 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:54,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:54,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:55,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707929987] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:55,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:55,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:55,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91737588] [2022-02-11 00:01:55,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:55,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:55,055 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:55,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:55,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:55,056 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) [2022-02-11 00:01:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:01:58,134 INFO L93 Difference]: Finished difference Result 575 states and 1162 transitions. [2022-02-11 00:01:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-11 00:01:58,134 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 [2022-02-11 00:01:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:01:58,135 INFO L225 Difference]: With dead ends: 575 [2022-02-11 00:01:58,135 INFO L226 Difference]: Without dead ends: 572 [2022-02-11 00:01:58,136 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1327, Invalid=9803, Unknown=0, NotChecked=0, Total=11130 [2022-02-11 00:01:58,137 INFO L934 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:01:58,137 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 880 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:01:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-02-11 00:01:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 311. [2022-02-11 00:01:58,141 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) [2022-02-11 00:01:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 691 transitions. [2022-02-11 00:01:58,142 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 691 transitions. Word has length 21 [2022-02-11 00:01:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:01:58,142 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 691 transitions. [2022-02-11 00:01:58,142 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) [2022-02-11 00:01:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 691 transitions. [2022-02-11 00:01:58,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:01:58,143 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:01:58,143 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:01:58,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-11 00:01:58,359 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 [2022-02-11 00:01:58,359 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:01:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:01:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1626778484, now seen corresponding path program 28 times [2022-02-11 00:01:58,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:01:58,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206505690] [2022-02-11 00:01:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:01:58,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:01:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:01:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:58,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:01:58,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206505690] [2022-02-11 00:01:58,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206505690] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:01:58,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677675070] [2022-02-11 00:01:58,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:01:58,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:01:58,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:01:58,558 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) [2022-02-11 00:01:58,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-11 00:01:58,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:01:58,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:01:58,580 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:01:58,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:01:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:59,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:01:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:01:59,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677675070] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:01:59,623 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:01:59,623 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:01:59,623 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773808899] [2022-02-11 00:01:59,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:01:59,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:01:59,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:01:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:01:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:01:59,624 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) [2022-02-11 00:02:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:03,511 INFO L93 Difference]: Finished difference Result 594 states and 1208 transitions. [2022-02-11 00:02:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-11 00:02:03,511 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 [2022-02-11 00:02:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:03,512 INFO L225 Difference]: With dead ends: 594 [2022-02-11 00:02:03,512 INFO L226 Difference]: Without dead ends: 591 [2022-02-11 00:02:03,513 INFO L933 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 [2022-02-11 00:02:03,514 INFO L934 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:03,514 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 771 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:02:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-02-11 00:02:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 307. [2022-02-11 00:02:03,518 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) [2022-02-11 00:02:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 683 transitions. [2022-02-11 00:02:03,518 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 683 transitions. Word has length 21 [2022-02-11 00:02:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:03,518 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 683 transitions. [2022-02-11 00:02:03,519 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) [2022-02-11 00:02:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 683 transitions. [2022-02-11 00:02:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:03,519 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:03,519 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:03,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-11 00:02:03,719 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 [2022-02-11 00:02:03,720 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash -11542068, now seen corresponding path program 29 times [2022-02-11 00:02:03,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:03,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100466750] [2022-02-11 00:02:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:03,941 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:03,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100466750] [2022-02-11 00:02:03,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100466750] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:03,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551180164] [2022-02-11 00:02:03,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:02:03,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:03,943 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) [2022-02-11 00:02:03,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-11 00:02:03,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:02:03,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:03,964 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:03,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:04,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:05,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551180164] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:05,037 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:05,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:05,037 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201000960] [2022-02-11 00:02:05,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:05,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:05,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:05,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:05,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:05,038 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) [2022-02-11 00:02:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:07,842 INFO L93 Difference]: Finished difference Result 598 states and 1215 transitions. [2022-02-11 00:02:07,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 00:02:07,843 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 [2022-02-11 00:02:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:07,844 INFO L225 Difference]: With dead ends: 598 [2022-02-11 00:02:07,844 INFO L226 Difference]: Without dead ends: 595 [2022-02-11 00:02:07,845 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1377, Invalid=9543, Unknown=0, NotChecked=0, Total=10920 [2022-02-11 00:02:07,845 INFO L934 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 [2022-02-11 00:02:07,845 INFO L935 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] [2022-02-11 00:02:07,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-02-11 00:02:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 311. [2022-02-11 00:02:07,849 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) [2022-02-11 00:02:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 692 transitions. [2022-02-11 00:02:07,850 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 692 transitions. Word has length 21 [2022-02-11 00:02:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:07,850 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 692 transitions. [2022-02-11 00:02:07,850 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) [2022-02-11 00:02:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 692 transitions. [2022-02-11 00:02:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:07,851 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:07,851 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:07,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-11 00:02:08,051 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 [2022-02-11 00:02:08,051 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1867224632, now seen corresponding path program 30 times [2022-02-11 00:02:08,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:08,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29527686] [2022-02-11 00:02:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:08,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:08,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:08,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29527686] [2022-02-11 00:02:08,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29527686] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:08,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598084748] [2022-02-11 00:02:08,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:02:08,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:08,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:08,240 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) [2022-02-11 00:02:08,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-11 00:02:08,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:02:08,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:08,262 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:08,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:08,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:09,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598084748] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:09,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:09,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:09,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157108031] [2022-02-11 00:02:09,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:09,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:09,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:09,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:09,228 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) [2022-02-11 00:02:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:12,626 INFO L93 Difference]: Finished difference Result 617 states and 1258 transitions. [2022-02-11 00:02:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-11 00:02:12,626 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 [2022-02-11 00:02:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:12,627 INFO L225 Difference]: With dead ends: 617 [2022-02-11 00:02:12,628 INFO L226 Difference]: Without dead ends: 614 [2022-02-11 00:02:12,628 INFO L933 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 [2022-02-11 00:02:12,628 INFO L934 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 [2022-02-11 00:02:12,629 INFO L935 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] [2022-02-11 00:02:12,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-02-11 00:02:12,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 309. [2022-02-11 00:02:12,633 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) [2022-02-11 00:02:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 688 transitions. [2022-02-11 00:02:12,634 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 688 transitions. Word has length 21 [2022-02-11 00:02:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:12,634 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 688 transitions. [2022-02-11 00:02:12,634 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) [2022-02-11 00:02:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 688 transitions. [2022-02-11 00:02:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:12,634 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:12,634 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:12,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-11 00:02:12,850 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 [2022-02-11 00:02:12,850 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:12,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1123505720, now seen corresponding path program 31 times [2022-02-11 00:02:12,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:12,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299793476] [2022-02-11 00:02:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:12,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:13,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:13,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299793476] [2022-02-11 00:02:13,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299793476] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:13,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333813948] [2022-02-11 00:02:13,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:02:13,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:13,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:13,040 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) [2022-02-11 00:02:13,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-11 00:02:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:13,061 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:13,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:13,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:14,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333813948] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:14,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:14,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:14,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276202280] [2022-02-11 00:02:14,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:14,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:14,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2031, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:14,047 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) [2022-02-11 00:02:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:19,478 INFO L93 Difference]: Finished difference Result 681 states and 1392 transitions. [2022-02-11 00:02:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-11 00:02:19,479 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 [2022-02-11 00:02:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:19,480 INFO L225 Difference]: With dead ends: 681 [2022-02-11 00:02:19,480 INFO L226 Difference]: Without dead ends: 678 [2022-02-11 00:02:19,481 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8417 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3235, Invalid=21887, Unknown=0, NotChecked=0, Total=25122 [2022-02-11 00:02:19,482 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 397 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-02-11 00:02:19,482 INFO L935 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] [2022-02-11 00:02:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-02-11 00:02:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 311. [2022-02-11 00:02:19,486 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) [2022-02-11 00:02:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 695 transitions. [2022-02-11 00:02:19,487 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 695 transitions. Word has length 21 [2022-02-11 00:02:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:19,487 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 695 transitions. [2022-02-11 00:02:19,487 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) [2022-02-11 00:02:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 695 transitions. [2022-02-11 00:02:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:19,487 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:19,487 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:19,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-02-11 00:02:19,701 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 [2022-02-11 00:02:19,701 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1690030738, now seen corresponding path program 32 times [2022-02-11 00:02:19,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:19,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44977645] [2022-02-11 00:02:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:19,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:20,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:20,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44977645] [2022-02-11 00:02:20,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44977645] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:20,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943073711] [2022-02-11 00:02:20,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:02:20,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:20,058 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) [2022-02-11 00:02:20,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-11 00:02:20,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:02:20,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:20,078 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:20,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:20,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:21,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943073711] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:21,137 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:21,137 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:21,137 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880674277] [2022-02-11 00:02:21,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:21,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:21,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:21,138 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) [2022-02-11 00:02:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:24,077 INFO L93 Difference]: Finished difference Result 587 states and 1202 transitions. [2022-02-11 00:02:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-11 00:02:24,078 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 [2022-02-11 00:02:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:24,079 INFO L225 Difference]: With dead ends: 587 [2022-02-11 00:02:24,079 INFO L226 Difference]: Without dead ends: 584 [2022-02-11 00:02:24,079 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1490, Invalid=10500, Unknown=0, NotChecked=0, Total=11990 [2022-02-11 00:02:24,080 INFO L934 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:24,080 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 718 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:02:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-02-11 00:02:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 312. [2022-02-11 00:02:24,084 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) [2022-02-11 00:02:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 697 transitions. [2022-02-11 00:02:24,084 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 697 transitions. Word has length 21 [2022-02-11 00:02:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:24,084 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 697 transitions. [2022-02-11 00:02:24,084 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) [2022-02-11 00:02:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 697 transitions. [2022-02-11 00:02:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:24,085 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:24,085 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:24,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-02-11 00:02:24,301 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 [2022-02-11 00:02:24,301 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:24,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1686986368, now seen corresponding path program 33 times [2022-02-11 00:02:24,302 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:24,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259162330] [2022-02-11 00:02:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:24,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:24,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:24,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259162330] [2022-02-11 00:02:24,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259162330] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:24,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921106084] [2022-02-11 00:02:24,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:02:24,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:24,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:24,508 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) [2022-02-11 00:02:24,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-11 00:02:24,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:02:24,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:24,532 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:24,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:25,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:25,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921106084] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:25,590 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:25,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:25,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731145132] [2022-02-11 00:02:25,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:25,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:25,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:25,592 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) [2022-02-11 00:02:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:28,909 INFO L93 Difference]: Finished difference Result 596 states and 1228 transitions. [2022-02-11 00:02:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-11 00:02:28,909 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 [2022-02-11 00:02:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:28,910 INFO L225 Difference]: With dead ends: 596 [2022-02-11 00:02:28,910 INFO L226 Difference]: Without dead ends: 593 [2022-02-11 00:02:28,911 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4071 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1863, Invalid=12657, Unknown=0, NotChecked=0, Total=14520 [2022-02-11 00:02:28,912 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 305 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-02-11 00:02:28,912 INFO L935 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] [2022-02-11 00:02:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-02-11 00:02:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 312. [2022-02-11 00:02:28,916 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) [2022-02-11 00:02:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 697 transitions. [2022-02-11 00:02:28,917 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 697 transitions. Word has length 21 [2022-02-11 00:02:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:28,917 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 697 transitions. [2022-02-11 00:02:28,917 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) [2022-02-11 00:02:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 697 transitions. [2022-02-11 00:02:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:28,918 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:28,918 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:28,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-11 00:02:29,128 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 [2022-02-11 00:02:29,128 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1498854626, now seen corresponding path program 34 times [2022-02-11 00:02:29,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:29,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717546866] [2022-02-11 00:02:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:29,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:29,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717546866] [2022-02-11 00:02:29,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717546866] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:29,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647869279] [2022-02-11 00:02:29,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:02:29,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:29,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:29,337 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) [2022-02-11 00:02:29,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-11 00:02:29,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:02:29,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:29,356 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:29,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:29,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:30,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647869279] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:30,419 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:30,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:30,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656457303] [2022-02-11 00:02:30,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:30,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:30,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:30,420 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) [2022-02-11 00:02:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:33,102 INFO L93 Difference]: Finished difference Result 568 states and 1147 transitions. [2022-02-11 00:02:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 00:02:33,102 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 [2022-02-11 00:02:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:33,103 INFO L225 Difference]: With dead ends: 568 [2022-02-11 00:02:33,103 INFO L226 Difference]: Without dead ends: 565 [2022-02-11 00:02:33,104 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1205, Invalid=8497, Unknown=0, NotChecked=0, Total=9702 [2022-02-11 00:02:33,105 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 304 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:33,105 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 612 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:02:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-02-11 00:02:33,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 317. [2022-02-11 00:02:33,110 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) [2022-02-11 00:02:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 708 transitions. [2022-02-11 00:02:33,110 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 708 transitions. Word has length 21 [2022-02-11 00:02:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:33,110 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 708 transitions. [2022-02-11 00:02:33,110 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) [2022-02-11 00:02:33,110 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 708 transitions. [2022-02-11 00:02:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:33,111 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:33,111 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:33,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-11 00:02:33,311 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 [2022-02-11 00:02:33,312 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:33,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1903937964, now seen corresponding path program 35 times [2022-02-11 00:02:33,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:33,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093427929] [2022-02-11 00:02:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:33,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:33,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093427929] [2022-02-11 00:02:33,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093427929] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:33,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258649286] [2022-02-11 00:02:33,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:02:33,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:33,522 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) [2022-02-11 00:02:33,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-11 00:02:33,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:02:33,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:33,542 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:33,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:34,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:34,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258649286] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:34,630 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:34,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:34,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114965376] [2022-02-11 00:02:34,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:34,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:34,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:34,631 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) [2022-02-11 00:02:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:36,958 INFO L93 Difference]: Finished difference Result 574 states and 1157 transitions. [2022-02-11 00:02:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-11 00:02:36,959 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 [2022-02-11 00:02:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:36,960 INFO L225 Difference]: With dead ends: 574 [2022-02-11 00:02:36,960 INFO L226 Difference]: Without dead ends: 571 [2022-02-11 00:02:36,961 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1098, Invalid=7644, Unknown=0, NotChecked=0, Total=8742 [2022-02-11 00:02:36,961 INFO L934 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 [2022-02-11 00:02:36,961 INFO L935 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] [2022-02-11 00:02:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-02-11 00:02:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 315. [2022-02-11 00:02:36,967 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) [2022-02-11 00:02:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 704 transitions. [2022-02-11 00:02:36,967 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 704 transitions. Word has length 21 [2022-02-11 00:02:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:36,968 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 704 transitions. [2022-02-11 00:02:36,968 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) [2022-02-11 00:02:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 704 transitions. [2022-02-11 00:02:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:36,969 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:36,969 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:36,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-02-11 00:02:37,169 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 [2022-02-11 00:02:37,169 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash 535346768, now seen corresponding path program 36 times [2022-02-11 00:02:37,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:37,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788038531] [2022-02-11 00:02:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:37,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:37,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788038531] [2022-02-11 00:02:37,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788038531] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:37,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214954575] [2022-02-11 00:02:37,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:02:37,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:37,371 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) [2022-02-11 00:02:37,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-11 00:02:37,392 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:02:37,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:37,393 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:37,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:38,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214954575] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:38,452 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:38,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:38,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633574411] [2022-02-11 00:02:38,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:38,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:38,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:38,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:38,453 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) [2022-02-11 00:02:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:41,522 INFO L93 Difference]: Finished difference Result 602 states and 1215 transitions. [2022-02-11 00:02:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-11 00:02:41,522 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 [2022-02-11 00:02:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:41,524 INFO L225 Difference]: With dead ends: 602 [2022-02-11 00:02:41,524 INFO L226 Difference]: Without dead ends: 599 [2022-02-11 00:02:41,524 INFO L933 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 [2022-02-11 00:02:41,524 INFO L934 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 [2022-02-11 00:02:41,525 INFO L935 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] [2022-02-11 00:02:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-02-11 00:02:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 321. [2022-02-11 00:02:41,529 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) [2022-02-11 00:02:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 716 transitions. [2022-02-11 00:02:41,529 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 716 transitions. Word has length 21 [2022-02-11 00:02:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:41,529 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 716 transitions. [2022-02-11 00:02:41,530 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) [2022-02-11 00:02:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 716 transitions. [2022-02-11 00:02:41,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:41,530 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:41,530 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:41,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-02-11 00:02:41,746 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 [2022-02-11 00:02:41,746 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash 528023948, now seen corresponding path program 37 times [2022-02-11 00:02:41,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:41,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255825994] [2022-02-11 00:02:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:41,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:41,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255825994] [2022-02-11 00:02:41,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255825994] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:41,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842638903] [2022-02-11 00:02:41,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:02:41,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:41,930 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) [2022-02-11 00:02:41,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-11 00:02:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:41,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:41,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:42,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:42,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842638903] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:42,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:42,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:02:42,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945124351] [2022-02-11 00:02:42,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:42,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:02:42,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:02:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:02:42,922 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) [2022-02-11 00:02:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:45,309 INFO L93 Difference]: Finished difference Result 632 states and 1277 transitions. [2022-02-11 00:02:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 00:02:45,309 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 [2022-02-11 00:02:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:45,310 INFO L225 Difference]: With dead ends: 632 [2022-02-11 00:02:45,310 INFO L226 Difference]: Without dead ends: 625 [2022-02-11 00:02:45,311 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2803 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1446, Invalid=9266, Unknown=0, NotChecked=0, Total=10712 [2022-02-11 00:02:45,311 INFO L934 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 [2022-02-11 00:02:45,311 INFO L935 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] [2022-02-11 00:02:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-02-11 00:02:45,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 318. [2022-02-11 00:02:45,315 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) [2022-02-11 00:02:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 711 transitions. [2022-02-11 00:02:45,315 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 711 transitions. Word has length 21 [2022-02-11 00:02:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:45,316 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 711 transitions. [2022-02-11 00:02:45,316 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) [2022-02-11 00:02:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 711 transitions. [2022-02-11 00:02:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:45,316 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:45,316 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:45,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-11 00:02:45,516 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 [2022-02-11 00:02:45,517 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2144384112, now seen corresponding path program 38 times [2022-02-11 00:02:45,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:45,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258170843] [2022-02-11 00:02:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:45,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:45,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:45,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258170843] [2022-02-11 00:02:45,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258170843] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:45,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197750497] [2022-02-11 00:02:45,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:02:45,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:45,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:45,703 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) [2022-02-11 00:02:45,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-11 00:02:45,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:02:45,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:45,721 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:45,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:46,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:46,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197750497] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:46,691 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:46,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:46,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086929065] [2022-02-11 00:02:46,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:46,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:46,691 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:46,692 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) [2022-02-11 00:02:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:49,232 INFO L93 Difference]: Finished difference Result 586 states and 1183 transitions. [2022-02-11 00:02:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-11 00:02:49,233 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 [2022-02-11 00:02:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:49,234 INFO L225 Difference]: With dead ends: 586 [2022-02-11 00:02:49,234 INFO L226 Difference]: Without dead ends: 583 [2022-02-11 00:02:49,234 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1196, Invalid=8506, Unknown=0, NotChecked=0, Total=9702 [2022-02-11 00:02:49,235 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 335 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:02:49,235 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 529 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:02:49,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-02-11 00:02:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 320. [2022-02-11 00:02:49,239 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) [2022-02-11 00:02:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 716 transitions. [2022-02-11 00:02:49,239 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 716 transitions. Word has length 21 [2022-02-11 00:02:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:49,239 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 716 transitions. [2022-02-11 00:02:49,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 716 transitions. [2022-02-11 00:02:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:49,240 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:49,240 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:49,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-02-11 00:02:49,455 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 [2022-02-11 00:02:49,455 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:49,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:49,455 INFO L85 PathProgramCache]: Analyzing trace with hash 294900620, now seen corresponding path program 39 times [2022-02-11 00:02:49,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:49,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955529950] [2022-02-11 00:02:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:49,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:49,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:49,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955529950] [2022-02-11 00:02:49,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955529950] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:49,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713330537] [2022-02-11 00:02:49,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:02:49,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:49,651 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) [2022-02-11 00:02:49,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-11 00:02:49,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:02:49,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:49,669 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:49,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:50,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:50,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713330537] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:50,708 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:50,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:50,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961048852] [2022-02-11 00:02:50,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:50,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:50,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:50,718 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) [2022-02-11 00:02:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:53,879 INFO L93 Difference]: Finished difference Result 622 states and 1249 transitions. [2022-02-11 00:02:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-11 00:02:53,880 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 [2022-02-11 00:02:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:53,881 INFO L225 Difference]: With dead ends: 622 [2022-02-11 00:02:53,881 INFO L226 Difference]: Without dead ends: 619 [2022-02-11 00:02:53,882 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3366 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1529, Invalid=10903, Unknown=0, NotChecked=0, Total=12432 [2022-02-11 00:02:53,882 INFO L934 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 [2022-02-11 00:02:53,882 INFO L935 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] [2022-02-11 00:02:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-02-11 00:02:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 329. [2022-02-11 00:02:53,886 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) [2022-02-11 00:02:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 735 transitions. [2022-02-11 00:02:53,887 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 735 transitions. Word has length 21 [2022-02-11 00:02:53,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:53,887 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 735 transitions. [2022-02-11 00:02:53,887 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) [2022-02-11 00:02:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 735 transitions. [2022-02-11 00:02:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:53,888 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:53,888 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:53,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-11 00:02:54,088 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 [2022-02-11 00:02:54,088 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:54,089 INFO L85 PathProgramCache]: Analyzing trace with hash 287577800, now seen corresponding path program 40 times [2022-02-11 00:02:54,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:54,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423023029] [2022-02-11 00:02:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:54,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:54,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:54,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423023029] [2022-02-11 00:02:54,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423023029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:54,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174055897] [2022-02-11 00:02:54,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:02:54,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:54,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:54,294 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) [2022-02-11 00:02:54,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-11 00:02:54,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:02:54,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:54,315 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:54,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:54,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:55,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174055897] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:55,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:55,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:02:55,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591951792] [2022-02-11 00:02:55,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:55,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:02:55,325 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:02:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1939, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:02:55,326 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) [2022-02-11 00:02:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:02:58,058 INFO L93 Difference]: Finished difference Result 650 states and 1313 transitions. [2022-02-11 00:02:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 00:02:58,058 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:02:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:02:58,059 INFO L225 Difference]: With dead ends: 650 [2022-02-11 00:02:58,059 INFO L226 Difference]: Without dead ends: 643 [2022-02-11 00:02:58,060 INFO L933 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 [2022-02-11 00:02:58,060 INFO L934 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 [2022-02-11 00:02:58,060 INFO L935 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] [2022-02-11 00:02:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-02-11 00:02:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 328. [2022-02-11 00:02:58,064 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) [2022-02-11 00:02:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 734 transitions. [2022-02-11 00:02:58,065 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 734 transitions. Word has length 21 [2022-02-11 00:02:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:02:58,065 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 734 transitions. [2022-02-11 00:02:58,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:02:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 734 transitions. [2022-02-11 00:02:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:02:58,065 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:02:58,065 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:02:58,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-11 00:02:58,279 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 [2022-02-11 00:02:58,280 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:02:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:02:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1038619532, now seen corresponding path program 41 times [2022-02-11 00:02:58,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:02:58,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576094580] [2022-02-11 00:02:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:02:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:02:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:02:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:58,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:02:58,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576094580] [2022-02-11 00:02:58,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576094580] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:02:58,476 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100747635] [2022-02-11 00:02:58,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:02:58,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:02:58,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:02:58,477 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) [2022-02-11 00:02:58,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-11 00:02:58,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:02:58,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:02:58,498 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:02:58,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:02:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:58,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:02:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:02:59,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100747635] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:02:59,552 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:02:59,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:02:59,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261610756] [2022-02-11 00:02:59,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:02:59,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:02:59,555 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:02:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:02:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2022, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:02:59,556 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) [2022-02-11 00:03:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:04,347 INFO L93 Difference]: Finished difference Result 663 states and 1340 transitions. [2022-02-11 00:03:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-11 00:03:04,347 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 [2022-02-11 00:03:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:04,349 INFO L225 Difference]: With dead ends: 663 [2022-02-11 00:03:04,349 INFO L226 Difference]: Without dead ends: 660 [2022-02-11 00:03:04,350 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5360 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2300, Invalid=15790, Unknown=0, NotChecked=0, Total=18090 [2022-02-11 00:03:04,350 INFO L934 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:04,350 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 645 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:03:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-02-11 00:03:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 331. [2022-02-11 00:03:04,355 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) [2022-02-11 00:03:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 741 transitions. [2022-02-11 00:03:04,355 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 741 transitions. Word has length 21 [2022-02-11 00:03:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:04,356 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 741 transitions. [2022-02-11 00:03:04,356 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) [2022-02-11 00:03:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 741 transitions. [2022-02-11 00:03:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:04,356 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:04,356 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:04,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:04,573 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 [2022-02-11 00:03:04,574 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1031296712, now seen corresponding path program 42 times [2022-02-11 00:03:04,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:04,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696303236] [2022-02-11 00:03:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:04,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:04,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:04,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696303236] [2022-02-11 00:03:04,811 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696303236] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:04,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978558329] [2022-02-11 00:03:04,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:03:04,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:04,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:04,812 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) [2022-02-11 00:03:04,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-11 00:03:04,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:03:04,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:04,835 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:04,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:05,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:05,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978558329] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:05,878 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:05,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:05,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254571760] [2022-02-11 00:03:05,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:05,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:05,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1928, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:05,879 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) [2022-02-11 00:03:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:10,069 INFO L93 Difference]: Finished difference Result 690 states and 1388 transitions. [2022-02-11 00:03:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 00:03:10,069 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 [2022-02-11 00:03:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:10,070 INFO L225 Difference]: With dead ends: 690 [2022-02-11 00:03:10,071 INFO L226 Difference]: Without dead ends: 683 [2022-02-11 00:03:10,071 INFO L933 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 [2022-02-11 00:03:10,071 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 466 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:10,072 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 611 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:03:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-02-11 00:03:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 332. [2022-02-11 00:03:10,076 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) [2022-02-11 00:03:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 748 transitions. [2022-02-11 00:03:10,076 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 748 transitions. Word has length 21 [2022-02-11 00:03:10,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:10,077 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 748 transitions. [2022-02-11 00:03:10,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 748 transitions. [2022-02-11 00:03:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:10,077 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:10,077 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:10,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-11 00:03:10,278 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 [2022-02-11 00:03:10,278 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1152381240, now seen corresponding path program 43 times [2022-02-11 00:03:10,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:10,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367242886] [2022-02-11 00:03:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:10,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:10,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367242886] [2022-02-11 00:03:10,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367242886] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:10,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766617097] [2022-02-11 00:03:10,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:03:10,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:10,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:10,475 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) [2022-02-11 00:03:10,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-11 00:03:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:10,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:10,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:10,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:11,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766617097] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:11,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:11,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:11,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034270757] [2022-02-11 00:03:11,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:11,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:11,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:11,518 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) [2022-02-11 00:03:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:14,817 INFO L93 Difference]: Finished difference Result 700 states and 1430 transitions. [2022-02-11 00:03:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-11 00:03:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:03:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:14,818 INFO L225 Difference]: With dead ends: 700 [2022-02-11 00:03:14,818 INFO L226 Difference]: Without dead ends: 693 [2022-02-11 00:03:14,819 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4409 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2207, Invalid=13045, Unknown=0, NotChecked=0, Total=15252 [2022-02-11 00:03:14,819 INFO L934 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 [2022-02-11 00:03:14,819 INFO L935 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] [2022-02-11 00:03:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-02-11 00:03:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 330. [2022-02-11 00:03:14,823 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) [2022-02-11 00:03:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 740 transitions. [2022-02-11 00:03:14,824 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 740 transitions. Word has length 21 [2022-02-11 00:03:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:14,824 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 740 transitions. [2022-02-11 00:03:14,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 740 transitions. [2022-02-11 00:03:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:14,825 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:14,825 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:14,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:15,040 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 [2022-02-11 00:03:15,041 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash 914993654, now seen corresponding path program 44 times [2022-02-11 00:03:15,041 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:15,041 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515834274] [2022-02-11 00:03:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:15,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:15,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515834274] [2022-02-11 00:03:15,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515834274] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:15,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873754508] [2022-02-11 00:03:15,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:03:15,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:15,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:15,223 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) [2022-02-11 00:03:15,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-11 00:03:15,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:03:15,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:15,241 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:15,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:15,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:16,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873754508] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:16,187 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:16,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:03:16,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495063930] [2022-02-11 00:03:16,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:16,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:03:16,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:03:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:03:16,188 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) [2022-02-11 00:03:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:19,275 INFO L93 Difference]: Finished difference Result 632 states and 1283 transitions. [2022-02-11 00:03:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-11 00:03:19,276 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 [2022-02-11 00:03:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:19,277 INFO L225 Difference]: With dead ends: 632 [2022-02-11 00:03:19,277 INFO L226 Difference]: Without dead ends: 629 [2022-02-11 00:03:19,278 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1659, Invalid=10997, Unknown=0, NotChecked=0, Total=12656 [2022-02-11 00:03:19,278 INFO L934 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 [2022-02-11 00:03:19,278 INFO L935 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] [2022-02-11 00:03:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-02-11 00:03:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 331. [2022-02-11 00:03:19,282 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) [2022-02-11 00:03:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 742 transitions. [2022-02-11 00:03:19,282 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 742 transitions. Word has length 21 [2022-02-11 00:03:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:19,282 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 742 transitions. [2022-02-11 00:03:19,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:03:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 742 transitions. [2022-02-11 00:03:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:19,283 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:19,283 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:19,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:19,499 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 [2022-02-11 00:03:19,499 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash 907670834, now seen corresponding path program 45 times [2022-02-11 00:03:19,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:19,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013404076] [2022-02-11 00:03:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:19,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:19,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013404076] [2022-02-11 00:03:19,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013404076] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:19,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649139318] [2022-02-11 00:03:19,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:03:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:19,699 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) [2022-02-11 00:03:19,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-11 00:03:19,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:03:19,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:19,720 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:19,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:20,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:20,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649139318] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:20,730 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:20,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:20,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541465929] [2022-02-11 00:03:20,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:20,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:20,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1932, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:20,731 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) [2022-02-11 00:03:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:23,544 INFO L93 Difference]: Finished difference Result 643 states and 1308 transitions. [2022-02-11 00:03:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 00:03:23,544 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 [2022-02-11 00:03:23,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:23,545 INFO L225 Difference]: With dead ends: 643 [2022-02-11 00:03:23,545 INFO L226 Difference]: Without dead ends: 636 [2022-02-11 00:03:23,546 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1525, Invalid=9187, Unknown=0, NotChecked=0, Total=10712 [2022-02-11 00:03:23,546 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 351 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-02-11 00:03:23,546 INFO L935 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] [2022-02-11 00:03:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-02-11 00:03:23,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 336. [2022-02-11 00:03:23,555 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) [2022-02-11 00:03:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 758 transitions. [2022-02-11 00:03:23,556 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 758 transitions. Word has length 21 [2022-02-11 00:03:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:23,556 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 758 transitions. [2022-02-11 00:03:23,556 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) [2022-02-11 00:03:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 758 transitions. [2022-02-11 00:03:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:23,556 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:23,557 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:23,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-02-11 00:03:23,757 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 [2022-02-11 00:03:23,757 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1276007118, now seen corresponding path program 46 times [2022-02-11 00:03:23,758 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:23,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982115801] [2022-02-11 00:03:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:23,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:23,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982115801] [2022-02-11 00:03:23,964 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982115801] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:23,964 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691726144] [2022-02-11 00:03:23,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:03:23,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:23,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:23,966 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) [2022-02-11 00:03:23,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-11 00:03:23,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:03:23,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:23,986 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:23,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:24,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:25,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691726144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:25,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:25,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:25,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754168048] [2022-02-11 00:03:25,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:25,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:25,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:25,009 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) [2022-02-11 00:03:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:28,129 INFO L93 Difference]: Finished difference Result 660 states and 1351 transitions. [2022-02-11 00:03:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-11 00:03:28,129 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 [2022-02-11 00:03:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:28,130 INFO L225 Difference]: With dead ends: 660 [2022-02-11 00:03:28,131 INFO L226 Difference]: Without dead ends: 646 [2022-02-11 00:03:28,132 INFO L933 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 [2022-02-11 00:03:28,132 INFO L934 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 [2022-02-11 00:03:28,132 INFO L935 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] [2022-02-11 00:03:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-02-11 00:03:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 332. [2022-02-11 00:03:28,141 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) [2022-02-11 00:03:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 744 transitions. [2022-02-11 00:03:28,142 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 744 transitions. Word has length 21 [2022-02-11 00:03:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:28,142 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 744 transitions. [2022-02-11 00:03:28,142 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) [2022-02-11 00:03:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 744 transitions. [2022-02-11 00:03:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:28,143 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:28,143 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:28,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-11 00:03:28,343 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 [2022-02-11 00:03:28,343 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:28,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2956536, now seen corresponding path program 47 times [2022-02-11 00:03:28,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:28,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220344774] [2022-02-11 00:03:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:28,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:28,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220344774] [2022-02-11 00:03:28,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220344774] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:28,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567233020] [2022-02-11 00:03:28,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:03:28,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:28,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:28,545 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) [2022-02-11 00:03:28,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-11 00:03:28,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:03:28,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:28,566 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:28,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:29,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:29,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567233020] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:29,610 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:29,610 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:03:29,610 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429333716] [2022-02-11 00:03:29,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:29,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:03:29,610 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:03:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:03:29,611 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) [2022-02-11 00:03:33,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:33,218 INFO L93 Difference]: Finished difference Result 625 states and 1290 transitions. [2022-02-11 00:03:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-11 00:03:33,218 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 [2022-02-11 00:03:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:33,219 INFO L225 Difference]: With dead ends: 625 [2022-02-11 00:03:33,219 INFO L226 Difference]: Without dead ends: 622 [2022-02-11 00:03:33,220 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4130 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1966, Invalid=12796, Unknown=0, NotChecked=0, Total=14762 [2022-02-11 00:03:33,220 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 340 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:33,221 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 519 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:03:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-02-11 00:03:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 335. [2022-02-11 00:03:33,225 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) [2022-02-11 00:03:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 751 transitions. [2022-02-11 00:03:33,225 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 751 transitions. Word has length 21 [2022-02-11 00:03:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:33,225 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 751 transitions. [2022-02-11 00:03:33,225 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) [2022-02-11 00:03:33,225 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 751 transitions. [2022-02-11 00:03:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:33,226 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:33,226 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:33,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-11 00:03:33,426 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 [2022-02-11 00:03:33,427 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -10279356, now seen corresponding path program 48 times [2022-02-11 00:03:33,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:33,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269972182] [2022-02-11 00:03:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:33,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:33,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:33,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269972182] [2022-02-11 00:03:33,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269972182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:33,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918645960] [2022-02-11 00:03:33,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:03:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:33,626 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) [2022-02-11 00:03:33,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-11 00:03:33,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:03:33,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:33,647 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:33,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:34,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:34,664 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918645960] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:34,664 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:34,664 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:34,664 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845304106] [2022-02-11 00:03:34,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:34,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:34,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:34,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:34,665 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) [2022-02-11 00:03:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:37,648 INFO L93 Difference]: Finished difference Result 642 states and 1320 transitions. [2022-02-11 00:03:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-11 00:03:37,648 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 [2022-02-11 00:03:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:37,649 INFO L225 Difference]: With dead ends: 642 [2022-02-11 00:03:37,649 INFO L226 Difference]: Without dead ends: 635 [2022-02-11 00:03:37,650 INFO L933 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 [2022-02-11 00:03:37,650 INFO L934 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 [2022-02-11 00:03:37,650 INFO L935 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] [2022-02-11 00:03:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-02-11 00:03:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 336. [2022-02-11 00:03:37,658 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) [2022-02-11 00:03:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 758 transitions. [2022-02-11 00:03:37,658 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 758 transitions. Word has length 21 [2022-02-11 00:03:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:37,659 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 758 transitions. [2022-02-11 00:03:37,659 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) [2022-02-11 00:03:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 758 transitions. [2022-02-11 00:03:37,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:37,659 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:37,659 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:37,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:37,860 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 [2022-02-11 00:03:37,860 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:37,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2101009988, now seen corresponding path program 49 times [2022-02-11 00:03:37,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:37,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307289281] [2022-02-11 00:03:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:37,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:38,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:38,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307289281] [2022-02-11 00:03:38,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307289281] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:38,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207477036] [2022-02-11 00:03:38,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:03:38,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:38,047 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) [2022-02-11 00:03:38,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-11 00:03:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:38,066 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:38,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:38,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:38,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207477036] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:38,969 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:38,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:38,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459346231] [2022-02-11 00:03:38,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:38,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:38,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:38,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:38,970 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) [2022-02-11 00:03:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:41,514 INFO L93 Difference]: Finished difference Result 643 states and 1322 transitions. [2022-02-11 00:03:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-11 00:03:41,515 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 [2022-02-11 00:03:41,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:41,516 INFO L225 Difference]: With dead ends: 643 [2022-02-11 00:03:41,516 INFO L226 Difference]: Without dead ends: 636 [2022-02-11 00:03:41,516 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2749 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1585, Invalid=9127, Unknown=0, NotChecked=0, Total=10712 [2022-02-11 00:03:41,516 INFO L934 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 [2022-02-11 00:03:41,516 INFO L935 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] [2022-02-11 00:03:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-02-11 00:03:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 332. [2022-02-11 00:03:41,521 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) [2022-02-11 00:03:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 744 transitions. [2022-02-11 00:03:41,522 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 744 transitions. Word has length 21 [2022-02-11 00:03:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:41,522 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 744 transitions. [2022-02-11 00:03:41,522 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) [2022-02-11 00:03:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 744 transitions. [2022-02-11 00:03:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:41,522 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:41,523 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:41,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-11 00:03:41,723 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 [2022-02-11 00:03:41,723 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:41,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1610494580, now seen corresponding path program 50 times [2022-02-11 00:03:41,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:41,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234468773] [2022-02-11 00:03:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:41,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:41,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234468773] [2022-02-11 00:03:41,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234468773] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:41,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291445623] [2022-02-11 00:03:41,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:03:41,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:41,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:41,929 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) [2022-02-11 00:03:41,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-11 00:03:41,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:03:41,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:41,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:41,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:42,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:42,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291445623] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:42,953 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:42,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:03:42,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204745327] [2022-02-11 00:03:42,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:42,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:03:42,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:03:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:03:42,954 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) [2022-02-11 00:03:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:44,775 INFO L93 Difference]: Finished difference Result 571 states and 1169 transitions. [2022-02-11 00:03:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-11 00:03:44,776 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 [2022-02-11 00:03:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:44,776 INFO L225 Difference]: With dead ends: 571 [2022-02-11 00:03:44,776 INFO L226 Difference]: Without dead ends: 568 [2022-02-11 00:03:44,777 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=923, Invalid=6559, Unknown=0, NotChecked=0, Total=7482 [2022-02-11 00:03:44,778 INFO L934 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 [2022-02-11 00:03:44,779 INFO L935 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] [2022-02-11 00:03:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-02-11 00:03:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 328. [2022-02-11 00:03:44,782 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) [2022-02-11 00:03:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-02-11 00:03:44,783 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 21 [2022-02-11 00:03:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:44,783 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-02-11 00:03:44,783 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) [2022-02-11 00:03:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-02-11 00:03:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:44,784 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:44,784 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:44,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:44,984 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 [2022-02-11 00:03:44,984 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:44,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash 955665800, now seen corresponding path program 51 times [2022-02-11 00:03:44,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:44,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269914738] [2022-02-11 00:03:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:45,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:45,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269914738] [2022-02-11 00:03:45,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269914738] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:45,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962936192] [2022-02-11 00:03:45,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:03:45,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:45,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:45,240 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) [2022-02-11 00:03:45,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-11 00:03:45,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:03:45,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:45,264 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:45,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:45,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:46,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962936192] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:46,318 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:46,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:03:46,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143156333] [2022-02-11 00:03:46,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:46,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:03:46,319 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:03:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:03:46,320 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) [2022-02-11 00:03:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:50,297 INFO L93 Difference]: Finished difference Result 693 states and 1409 transitions. [2022-02-11 00:03:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-11 00:03:50,298 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 [2022-02-11 00:03:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:50,298 INFO L225 Difference]: With dead ends: 693 [2022-02-11 00:03:50,299 INFO L226 Difference]: Without dead ends: 687 [2022-02-11 00:03:50,300 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4877 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2304, Invalid=14466, Unknown=0, NotChecked=0, Total=16770 [2022-02-11 00:03:50,300 INFO L934 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 [2022-02-11 00:03:50,300 INFO L935 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] [2022-02-11 00:03:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-02-11 00:03:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 333. [2022-02-11 00:03:50,310 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) [2022-02-11 00:03:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 747 transitions. [2022-02-11 00:03:50,311 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 747 transitions. Word has length 21 [2022-02-11 00:03:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:50,311 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 747 transitions. [2022-02-11 00:03:50,311 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) [2022-02-11 00:03:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 747 transitions. [2022-02-11 00:03:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:50,311 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:50,312 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:50,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-02-11 00:03:50,512 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 [2022-02-11 00:03:50,512 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash 948342980, now seen corresponding path program 52 times [2022-02-11 00:03:50,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:50,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84567494] [2022-02-11 00:03:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:50,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:50,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84567494] [2022-02-11 00:03:50,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84567494] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:50,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477644513] [2022-02-11 00:03:50,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:03:50,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:50,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:50,714 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) [2022-02-11 00:03:50,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-02-11 00:03:50,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:03:50,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:50,733 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:50,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:51,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:51,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477644513] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:51,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:51,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:51,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139335472] [2022-02-11 00:03:51,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:51,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:51,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:51,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1920, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:51,675 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) [2022-02-11 00:03:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:03:55,206 INFO L93 Difference]: Finished difference Result 732 states and 1481 transitions. [2022-02-11 00:03:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-11 00:03:55,207 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 [2022-02-11 00:03:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:03:55,208 INFO L225 Difference]: With dead ends: 732 [2022-02-11 00:03:55,208 INFO L226 Difference]: Without dead ends: 718 [2022-02-11 00:03:55,209 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4800 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2344, Invalid=14168, Unknown=0, NotChecked=0, Total=16512 [2022-02-11 00:03:55,209 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 386 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:03:55,209 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 683 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:03:55,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-02-11 00:03:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 342. [2022-02-11 00:03:55,214 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) [2022-02-11 00:03:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 773 transitions. [2022-02-11 00:03:55,215 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 773 transitions. Word has length 21 [2022-02-11 00:03:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:03:55,215 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 773 transitions. [2022-02-11 00:03:55,215 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) [2022-02-11 00:03:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 773 transitions. [2022-02-11 00:03:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:03:55,215 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:03:55,215 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:03:55,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-02-11 00:03:55,432 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 [2022-02-11 00:03:55,432 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:03:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:03:55,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1235334972, now seen corresponding path program 53 times [2022-02-11 00:03:55,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:03:55,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262879075] [2022-02-11 00:03:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:03:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:03:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:03:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:55,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:03:55,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262879075] [2022-02-11 00:03:55,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262879075] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:03:55,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631283766] [2022-02-11 00:03:55,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:03:55,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:03:55,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:03:55,627 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) [2022-02-11 00:03:55,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-02-11 00:03:55,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:03:55,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:03:55,649 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:03:55,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:03:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:56,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:03:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:03:56,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631283766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:03:56,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:03:56,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:03:56,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794864406] [2022-02-11 00:03:56,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:03:56,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:03:56,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:03:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:03:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:03:56,662 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) [2022-02-11 00:04:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:00,948 INFO L93 Difference]: Finished difference Result 740 states and 1494 transitions. [2022-02-11 00:04:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-11 00:04:00,948 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 [2022-02-11 00:04:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:00,949 INFO L225 Difference]: With dead ends: 740 [2022-02-11 00:04:00,949 INFO L226 Difference]: Without dead ends: 719 [2022-02-11 00:04:00,950 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5585 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2646, Invalid=16260, Unknown=0, NotChecked=0, Total=18906 [2022-02-11 00:04:00,951 INFO L934 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 [2022-02-11 00:04:00,951 INFO L935 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] [2022-02-11 00:04:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-02-11 00:04:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 340. [2022-02-11 00:04:00,955 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) [2022-02-11 00:04:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 765 transitions. [2022-02-11 00:04:00,956 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 765 transitions. Word has length 21 [2022-02-11 00:04:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:00,956 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 765 transitions. [2022-02-11 00:04:00,956 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) [2022-02-11 00:04:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 765 transitions. [2022-02-11 00:04:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:00,956 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:00,956 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:00,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-02-11 00:04:01,157 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 [2022-02-11 00:04:01,157 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1469937860, now seen corresponding path program 54 times [2022-02-11 00:04:01,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:01,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973566257] [2022-02-11 00:04:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:01,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:01,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973566257] [2022-02-11 00:04:01,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973566257] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:01,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186276833] [2022-02-11 00:04:01,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:04:01,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:01,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:01,339 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) [2022-02-11 00:04:01,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-02-11 00:04:01,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:04:01,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:01,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:01,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:01,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:02,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186276833] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:02,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:02,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:04:02,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299719740] [2022-02-11 00:04:02,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:02,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:04:02,282 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:04:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:04:02,283 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) [2022-02-11 00:04:04,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:04,757 INFO L93 Difference]: Finished difference Result 641 states and 1317 transitions. [2022-02-11 00:04:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-11 00:04:04,758 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 [2022-02-11 00:04:04,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:04,758 INFO L225 Difference]: With dead ends: 641 [2022-02-11 00:04:04,758 INFO L226 Difference]: Without dead ends: 627 [2022-02-11 00:04:04,759 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1746, Invalid=10464, Unknown=0, NotChecked=0, Total=12210 [2022-02-11 00:04:04,759 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 259 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:04,759 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 740 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:04:04,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-02-11 00:04:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 340. [2022-02-11 00:04:04,763 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) [2022-02-11 00:04:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 765 transitions. [2022-02-11 00:04:04,764 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 765 transitions. Word has length 21 [2022-02-11 00:04:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:04,764 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 765 transitions. [2022-02-11 00:04:04,764 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) [2022-02-11 00:04:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 765 transitions. [2022-02-11 00:04:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:04,764 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:04,764 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:04,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:04,965 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 [2022-02-11 00:04:04,965 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:04,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:04,965 INFO L85 PathProgramCache]: Analyzing trace with hash -657900934, now seen corresponding path program 55 times [2022-02-11 00:04:04,965 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:04,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596668230] [2022-02-11 00:04:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:04,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:05,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:05,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596668230] [2022-02-11 00:04:05,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596668230] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:05,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759163990] [2022-02-11 00:04:05,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:04:05,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:05,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:05,192 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) [2022-02-11 00:04:05,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-02-11 00:04:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:05,212 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:05,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:05,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:06,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759163990] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:06,257 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:06,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:06,257 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438760134] [2022-02-11 00:04:06,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:06,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:06,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:06,258 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) [2022-02-11 00:04:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:09,955 INFO L93 Difference]: Finished difference Result 686 states and 1378 transitions. [2022-02-11 00:04:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-11 00:04:09,956 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 [2022-02-11 00:04:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:09,957 INFO L225 Difference]: With dead ends: 686 [2022-02-11 00:04:09,957 INFO L226 Difference]: Without dead ends: 680 [2022-02-11 00:04:09,958 INFO L933 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 [2022-02-11 00:04:09,958 INFO L934 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:09,958 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 631 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:04:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-02-11 00:04:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 341. [2022-02-11 00:04:09,962 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) [2022-02-11 00:04:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 767 transitions. [2022-02-11 00:04:09,963 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 767 transitions. Word has length 21 [2022-02-11 00:04:09,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:09,963 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 767 transitions. [2022-02-11 00:04:09,963 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) [2022-02-11 00:04:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 767 transitions. [2022-02-11 00:04:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:09,964 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:09,964 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:09,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-02-11 00:04:10,164 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 [2022-02-11 00:04:10,164 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:10,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:10,164 INFO L85 PathProgramCache]: Analyzing trace with hash -665223754, now seen corresponding path program 56 times [2022-02-11 00:04:10,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:10,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474703153] [2022-02-11 00:04:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:10,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:10,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474703153] [2022-02-11 00:04:10,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474703153] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:10,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881483405] [2022-02-11 00:04:10,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:04:10,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:10,353 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) [2022-02-11 00:04:10,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-02-11 00:04:10,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:04:10,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:10,376 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:10,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:10,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:11,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881483405] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:11,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:11,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:04:11,307 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729036560] [2022-02-11 00:04:11,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:11,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:04:11,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:04:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:04:11,311 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) [2022-02-11 00:04:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:13,931 INFO L93 Difference]: Finished difference Result 702 states and 1416 transitions. [2022-02-11 00:04:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-11 00:04:13,931 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 [2022-02-11 00:04:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:13,932 INFO L225 Difference]: With dead ends: 702 [2022-02-11 00:04:13,932 INFO L226 Difference]: Without dead ends: 688 [2022-02-11 00:04:13,933 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3417 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1890, Invalid=10766, Unknown=0, NotChecked=0, Total=12656 [2022-02-11 00:04:13,933 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 369 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:13,933 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 597 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:04:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-02-11 00:04:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 346. [2022-02-11 00:04:13,938 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) [2022-02-11 00:04:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 783 transitions. [2022-02-11 00:04:13,938 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 783 transitions. Word has length 21 [2022-02-11 00:04:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:13,938 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 783 transitions. [2022-02-11 00:04:13,938 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) [2022-02-11 00:04:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 783 transitions. [2022-02-11 00:04:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:13,939 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:13,939 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:13,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-02-11 00:04:14,139 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 [2022-02-11 00:04:14,140 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:14,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1446065590, now seen corresponding path program 57 times [2022-02-11 00:04:14,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:14,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100323655] [2022-02-11 00:04:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:14,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:14,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100323655] [2022-02-11 00:04:14,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100323655] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:14,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440556336] [2022-02-11 00:04:14,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:04:14,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:14,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:14,327 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) [2022-02-11 00:04:14,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-02-11 00:04:14,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:04:14,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:14,347 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:14,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:14,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:15,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440556336] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:15,271 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:15,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:04:15,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248822058] [2022-02-11 00:04:15,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:15,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:04:15,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:04:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:04:15,272 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) [2022-02-11 00:04:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:18,556 INFO L93 Difference]: Finished difference Result 713 states and 1452 transitions. [2022-02-11 00:04:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-11 00:04:18,556 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 [2022-02-11 00:04:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:18,557 INFO L225 Difference]: With dead ends: 713 [2022-02-11 00:04:18,557 INFO L226 Difference]: Without dead ends: 692 [2022-02-11 00:04:18,558 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2165, Invalid=12355, Unknown=0, NotChecked=0, Total=14520 [2022-02-11 00:04:18,558 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 374 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:18,558 INFO L935 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] [2022-02-11 00:04:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-02-11 00:04:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 344. [2022-02-11 00:04:18,562 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) [2022-02-11 00:04:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 773 transitions. [2022-02-11 00:04:18,563 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 773 transitions. Word has length 21 [2022-02-11 00:04:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:18,563 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 773 transitions. [2022-02-11 00:04:18,563 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) [2022-02-11 00:04:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 773 transitions. [2022-02-11 00:04:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:18,563 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:18,564 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:18,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:18,779 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 [2022-02-11 00:04:18,779 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1575851124, now seen corresponding path program 58 times [2022-02-11 00:04:18,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:18,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19743821] [2022-02-11 00:04:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:18,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:18,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:18,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19743821] [2022-02-11 00:04:18,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19743821] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:18,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453896821] [2022-02-11 00:04:18,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:04:18,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:18,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:18,969 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) [2022-02-11 00:04:18,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-02-11 00:04:18,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:04:18,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:18,989 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:18,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:19,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:20,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453896821] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:20,016 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:20,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:20,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479318580] [2022-02-11 00:04:20,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:20,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:20,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:20,017 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) [2022-02-11 00:04:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:23,962 INFO L93 Difference]: Finished difference Result 676 states and 1388 transitions. [2022-02-11 00:04:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 00:04:23,962 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:04:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:23,963 INFO L225 Difference]: With dead ends: 676 [2022-02-11 00:04:23,963 INFO L226 Difference]: Without dead ends: 670 [2022-02-11 00:04:23,964 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2329, Invalid=14963, Unknown=0, NotChecked=0, Total=17292 [2022-02-11 00:04:23,964 INFO L934 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 [2022-02-11 00:04:23,964 INFO L935 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] [2022-02-11 00:04:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-02-11 00:04:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 348. [2022-02-11 00:04:23,969 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) [2022-02-11 00:04:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 783 transitions. [2022-02-11 00:04:23,969 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 783 transitions. Word has length 21 [2022-02-11 00:04:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:23,969 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 783 transitions. [2022-02-11 00:04:23,969 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) [2022-02-11 00:04:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 783 transitions. [2022-02-11 00:04:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:23,970 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:23,970 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:23,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-02-11 00:04:24,170 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 [2022-02-11 00:04:24,171 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:24,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1583173944, now seen corresponding path program 59 times [2022-02-11 00:04:24,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:24,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105396361] [2022-02-11 00:04:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:24,352 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:24,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105396361] [2022-02-11 00:04:24,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105396361] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:24,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641358569] [2022-02-11 00:04:24,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:04:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:24,354 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) [2022-02-11 00:04:24,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-02-11 00:04:24,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:04:24,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:24,372 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:24,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:24,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:25,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641358569] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:25,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:25,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:04:25,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504884766] [2022-02-11 00:04:25,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:25,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:04:25,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:25,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:04:25,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1910, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:04:25,334 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) [2022-02-11 00:04:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:28,809 INFO L93 Difference]: Finished difference Result 713 states and 1453 transitions. [2022-02-11 00:04:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-11 00:04:28,810 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 [2022-02-11 00:04:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:28,811 INFO L225 Difference]: With dead ends: 713 [2022-02-11 00:04:28,811 INFO L226 Difference]: Without dead ends: 699 [2022-02-11 00:04:28,811 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4649 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2405, Invalid=13597, Unknown=0, NotChecked=0, Total=16002 [2022-02-11 00:04:28,812 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 313 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:28,812 INFO L935 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] [2022-02-11 00:04:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-02-11 00:04:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 350. [2022-02-11 00:04:28,816 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) [2022-02-11 00:04:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 793 transitions. [2022-02-11 00:04:28,817 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 793 transitions. Word has length 21 [2022-02-11 00:04:28,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:28,817 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 793 transitions. [2022-02-11 00:04:28,817 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) [2022-02-11 00:04:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 793 transitions. [2022-02-11 00:04:28,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:28,817 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:28,818 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:28,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-02-11 00:04:29,031 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 [2022-02-11 00:04:29,031 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:29,032 INFO L85 PathProgramCache]: Analyzing trace with hash 528115400, now seen corresponding path program 60 times [2022-02-11 00:04:29,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:29,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275143823] [2022-02-11 00:04:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:29,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:29,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:29,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275143823] [2022-02-11 00:04:29,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275143823] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:29,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868701814] [2022-02-11 00:04:29,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:04:29,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:29,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:29,237 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) [2022-02-11 00:04:29,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-02-11 00:04:29,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:04:29,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:29,255 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:29,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:29,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:30,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868701814] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:30,230 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:30,230 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:04:30,230 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732794166] [2022-02-11 00:04:30,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:30,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:04:30,230 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:30,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:04:30,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1901, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:04:30,230 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) [2022-02-11 00:04:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:32,842 INFO L93 Difference]: Finished difference Result 692 states and 1419 transitions. [2022-02-11 00:04:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-11 00:04:32,842 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 [2022-02-11 00:04:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:32,843 INFO L225 Difference]: With dead ends: 692 [2022-02-11 00:04:32,843 INFO L226 Difference]: Without dead ends: 678 [2022-02-11 00:04:32,844 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1977, Invalid=10679, Unknown=0, NotChecked=0, Total=12656 [2022-02-11 00:04:32,844 INFO L934 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 [2022-02-11 00:04:32,845 INFO L935 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] [2022-02-11 00:04:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-02-11 00:04:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 342. [2022-02-11 00:04:32,849 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) [2022-02-11 00:04:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 769 transitions. [2022-02-11 00:04:32,849 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 769 transitions. Word has length 21 [2022-02-11 00:04:32,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:32,849 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 769 transitions. [2022-02-11 00:04:32,849 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) [2022-02-11 00:04:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 769 transitions. [2022-02-11 00:04:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:32,850 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:32,850 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:32,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-02-11 00:04:33,050 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 [2022-02-11 00:04:33,051 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1456163560, now seen corresponding path program 61 times [2022-02-11 00:04:33,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:33,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545948822] [2022-02-11 00:04:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:33,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:33,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545948822] [2022-02-11 00:04:33,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545948822] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:33,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085863985] [2022-02-11 00:04:33,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:04:33,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:33,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:33,246 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) [2022-02-11 00:04:33,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-02-11 00:04:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:33,265 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:33,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:33,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:34,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085863985] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:34,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:34,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:34,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144189052] [2022-02-11 00:04:34,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:34,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:34,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:34,245 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) [2022-02-11 00:04:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:36,614 INFO L93 Difference]: Finished difference Result 654 states and 1310 transitions. [2022-02-11 00:04:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-11 00:04:36,615 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 [2022-02-11 00:04:36,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:36,616 INFO L225 Difference]: With dead ends: 654 [2022-02-11 00:04:36,616 INFO L226 Difference]: Without dead ends: 651 [2022-02-11 00:04:36,616 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2618 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1159, Invalid=8941, Unknown=0, NotChecked=0, Total=10100 [2022-02-11 00:04:36,617 INFO L934 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 [2022-02-11 00:04:36,617 INFO L935 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] [2022-02-11 00:04:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-02-11 00:04:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 347. [2022-02-11 00:04:36,621 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) [2022-02-11 00:04:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 780 transitions. [2022-02-11 00:04:36,621 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 780 transitions. Word has length 21 [2022-02-11 00:04:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:36,622 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 780 transitions. [2022-02-11 00:04:36,622 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) [2022-02-11 00:04:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 780 transitions. [2022-02-11 00:04:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:36,635 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:36,635 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:36,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:36,835 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 [2022-02-11 00:04:36,836 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:36,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash -313253948, now seen corresponding path program 62 times [2022-02-11 00:04:36,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:36,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110316893] [2022-02-11 00:04:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:36,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:37,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:37,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110316893] [2022-02-11 00:04:37,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110316893] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:37,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866367514] [2022-02-11 00:04:37,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:04:37,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:37,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:37,039 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) [2022-02-11 00:04:37,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-02-11 00:04:37,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:04:37,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:37,060 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:37,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:37,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:37,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866367514] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:37,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:37,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:37,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170976515] [2022-02-11 00:04:37,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:37,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:37,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:37,994 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) [2022-02-11 00:04:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:40,566 INFO L93 Difference]: Finished difference Result 665 states and 1341 transitions. [2022-02-11 00:04:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-11 00:04:40,566 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 [2022-02-11 00:04:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:40,567 INFO L225 Difference]: With dead ends: 665 [2022-02-11 00:04:40,567 INFO L226 Difference]: Without dead ends: 662 [2022-02-11 00:04:40,568 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2984 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1256, Invalid=9874, Unknown=0, NotChecked=0, Total=11130 [2022-02-11 00:04:40,568 INFO L934 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 [2022-02-11 00:04:40,568 INFO L935 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] [2022-02-11 00:04:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-02-11 00:04:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 349. [2022-02-11 00:04:40,572 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) [2022-02-11 00:04:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-02-11 00:04:40,573 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-02-11 00:04:40,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:40,573 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-02-11 00:04:40,573 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) [2022-02-11 00:04:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-02-11 00:04:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:40,573 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:40,573 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:40,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:40,784 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 [2022-02-11 00:04:40,785 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:40,785 INFO L85 PathProgramCache]: Analyzing trace with hash 578920758, now seen corresponding path program 63 times [2022-02-11 00:04:40,785 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:40,785 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511056380] [2022-02-11 00:04:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:40,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:40,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:40,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511056380] [2022-02-11 00:04:40,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511056380] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:40,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409999419] [2022-02-11 00:04:40,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:04:40,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:40,971 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) [2022-02-11 00:04:40,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-02-11 00:04:40,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:04:40,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:40,990 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:40,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:41,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:41,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409999419] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:41,919 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:41,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:41,919 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324389439] [2022-02-11 00:04:41,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:41,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:41,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:41,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:41,920 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) [2022-02-11 00:04:44,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:44,190 INFO L93 Difference]: Finished difference Result 666 states and 1344 transitions. [2022-02-11 00:04:44,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-11 00:04:44,191 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 [2022-02-11 00:04:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:44,191 INFO L225 Difference]: With dead ends: 666 [2022-02-11 00:04:44,192 INFO L226 Difference]: Without dead ends: 663 [2022-02-11 00:04:44,192 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2569 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1145, Invalid=8755, Unknown=0, NotChecked=0, Total=9900 [2022-02-11 00:04:44,192 INFO L934 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 [2022-02-11 00:04:44,192 INFO L935 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] [2022-02-11 00:04:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-02-11 00:04:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 351. [2022-02-11 00:04:44,196 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) [2022-02-11 00:04:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-02-11 00:04:44,197 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-02-11 00:04:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:44,197 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-02-11 00:04:44,197 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) [2022-02-11 00:04:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-02-11 00:04:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:44,197 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:44,197 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:44,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:44,399 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 [2022-02-11 00:04:44,399 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1276761806, now seen corresponding path program 64 times [2022-02-11 00:04:44,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:44,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446243998] [2022-02-11 00:04:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:44,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:44,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:44,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446243998] [2022-02-11 00:04:44,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446243998] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:44,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639813794] [2022-02-11 00:04:44,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:04:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:44,578 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) [2022-02-11 00:04:44,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-02-11 00:04:44,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:04:44,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:44,596 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:44,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:45,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:45,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639813794] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:45,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:45,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:45,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902073868] [2022-02-11 00:04:45,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:45,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:45,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2048, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:45,507 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) [2022-02-11 00:04:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:48,324 INFO L93 Difference]: Finished difference Result 693 states and 1412 transitions. [2022-02-11 00:04:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-11 00:04:48,325 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 [2022-02-11 00:04:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:48,325 INFO L225 Difference]: With dead ends: 693 [2022-02-11 00:04:48,325 INFO L226 Difference]: Without dead ends: 690 [2022-02-11 00:04:48,326 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1503, Invalid=11607, Unknown=0, NotChecked=0, Total=13110 [2022-02-11 00:04:48,326 INFO L934 BasicCegarLoop]: 49 mSDtfsCounter, 321 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:48,327 INFO L935 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] [2022-02-11 00:04:48,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-02-11 00:04:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 345. [2022-02-11 00:04:48,332 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) [2022-02-11 00:04:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 776 transitions. [2022-02-11 00:04:48,332 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 776 transitions. Word has length 21 [2022-02-11 00:04:48,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:48,332 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 776 transitions. [2022-02-11 00:04:48,333 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) [2022-02-11 00:04:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 776 transitions. [2022-02-11 00:04:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:48,334 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:48,334 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:48,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:48,539 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 [2022-02-11 00:04:48,539 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash 812346952, now seen corresponding path program 65 times [2022-02-11 00:04:48,540 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:48,540 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520906901] [2022-02-11 00:04:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:48,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:48,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:48,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520906901] [2022-02-11 00:04:48,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520906901] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:48,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154921632] [2022-02-11 00:04:48,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:04:48,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:48,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:48,725 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) [2022-02-11 00:04:48,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-02-11 00:04:48,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:04:48,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:48,743 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:48,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:49,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:49,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154921632] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:49,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:49,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:49,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929675148] [2022-02-11 00:04:49,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:49,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:49,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:49,688 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) [2022-02-11 00:04:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:53,134 INFO L93 Difference]: Finished difference Result 680 states and 1374 transitions. [2022-02-11 00:04:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-11 00:04:53,134 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 [2022-02-11 00:04:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:53,135 INFO L225 Difference]: With dead ends: 680 [2022-02-11 00:04:53,135 INFO L226 Difference]: Without dead ends: 677 [2022-02-11 00:04:53,136 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4239 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1666, Invalid=13096, Unknown=0, NotChecked=0, Total=14762 [2022-02-11 00:04:53,136 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 283 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:04:53,136 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 857 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:04:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-02-11 00:04:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 349. [2022-02-11 00:04:53,140 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) [2022-02-11 00:04:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 785 transitions. [2022-02-11 00:04:53,141 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 785 transitions. Word has length 21 [2022-02-11 00:04:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:53,141 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 785 transitions. [2022-02-11 00:04:53,141 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) [2022-02-11 00:04:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 785 transitions. [2022-02-11 00:04:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:53,141 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:53,141 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:53,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:53,342 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 [2022-02-11 00:04:53,343 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:53,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1704521658, now seen corresponding path program 66 times [2022-02-11 00:04:53,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:53,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746816910] [2022-02-11 00:04:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:53,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:53,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:53,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746816910] [2022-02-11 00:04:53,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746816910] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:53,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153064626] [2022-02-11 00:04:53,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:04:53,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:53,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:53,527 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) [2022-02-11 00:04:53,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-02-11 00:04:53,545 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:04:53,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:04:53,546 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:53,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:53,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:54,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153064626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:54,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:54,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:54,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124354406] [2022-02-11 00:04:54,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:54,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:54,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2051, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:54,510 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) [2022-02-11 00:04:57,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:04:57,668 INFO L93 Difference]: Finished difference Result 686 states and 1384 transitions. [2022-02-11 00:04:57,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-11 00:04:57,668 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 [2022-02-11 00:04:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:04:57,669 INFO L225 Difference]: With dead ends: 686 [2022-02-11 00:04:57,669 INFO L226 Difference]: Without dead ends: 683 [2022-02-11 00:04:57,670 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3807 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1590, Invalid=11982, Unknown=0, NotChecked=0, Total=13572 [2022-02-11 00:04:57,670 INFO L934 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 [2022-02-11 00:04:57,670 INFO L935 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] [2022-02-11 00:04:57,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-02-11 00:04:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 351. [2022-02-11 00:04:57,674 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) [2022-02-11 00:04:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 789 transitions. [2022-02-11 00:04:57,675 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 789 transitions. Word has length 21 [2022-02-11 00:04:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:04:57,675 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 789 transitions. [2022-02-11 00:04:57,675 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) [2022-02-11 00:04:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 789 transitions. [2022-02-11 00:04:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:04:57,676 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:04:57,676 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:04:57,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-02-11 00:04:57,876 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 [2022-02-11 00:04:57,876 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:04:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:04:57,877 INFO L85 PathProgramCache]: Analyzing trace with hash -151160906, now seen corresponding path program 67 times [2022-02-11 00:04:57,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:04:57,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738132207] [2022-02-11 00:04:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:04:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:04:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:58,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:04:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738132207] [2022-02-11 00:04:58,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738132207] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:04:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002128390] [2022-02-11 00:04:58,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:04:58,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:04:58,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:04:58,058 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) [2022-02-11 00:04:58,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-02-11 00:04:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:04:58,076 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:04:58,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:04:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:58,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:04:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:04:59,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002128390] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:04:59,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:04:59,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:04:59,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104193031] [2022-02-11 00:04:59,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:04:59,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:04:59,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:04:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:04:59,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:04:59,032 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) [2022-02-11 00:05:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:03,290 INFO L93 Difference]: Finished difference Result 713 states and 1452 transitions. [2022-02-11 00:05:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-11 00:05:03,291 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 [2022-02-11 00:05:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:03,292 INFO L225 Difference]: With dead ends: 713 [2022-02-11 00:05:03,292 INFO L226 Difference]: Without dead ends: 710 [2022-02-11 00:05:03,293 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5323 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2087, Invalid=15735, Unknown=0, NotChecked=0, Total=17822 [2022-02-11 00:05:03,293 INFO L934 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:03,293 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 908 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:05:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-02-11 00:05:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 347. [2022-02-11 00:05:03,297 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) [2022-02-11 00:05:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 781 transitions. [2022-02-11 00:05:03,298 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 781 transitions. Word has length 21 [2022-02-11 00:05:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:03,298 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 781 transitions. [2022-02-11 00:05:03,298 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) [2022-02-11 00:05:03,298 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 781 transitions. [2022-02-11 00:05:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:03,298 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:03,298 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:03,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:03,499 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 [2022-02-11 00:05:03,499 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1464075510, now seen corresponding path program 68 times [2022-02-11 00:05:03,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:03,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318885791] [2022-02-11 00:05:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:03,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:03,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:03,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318885791] [2022-02-11 00:05:03,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318885791] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:03,710 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678143373] [2022-02-11 00:05:03,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:05:03,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:03,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:03,711 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) [2022-02-11 00:05:03,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-02-11 00:05:03,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:05:03,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:03,735 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:03,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:04,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:04,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678143373] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:04,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:04,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:04,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591865274] [2022-02-11 00:05:04,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:04,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:04,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:04,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:04,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:04,756 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) [2022-02-11 00:05:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:08,074 INFO L93 Difference]: Finished difference Result 714 states and 1446 transitions. [2022-02-11 00:05:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-11 00:05:08,074 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 [2022-02-11 00:05:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:08,075 INFO L225 Difference]: With dead ends: 714 [2022-02-11 00:05:08,075 INFO L226 Difference]: Without dead ends: 711 [2022-02-11 00:05:08,076 INFO L933 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 [2022-02-11 00:05:08,076 INFO L934 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 [2022-02-11 00:05:08,076 INFO L935 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] [2022-02-11 00:05:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-02-11 00:05:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 351. [2022-02-11 00:05:08,095 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) [2022-02-11 00:05:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 790 transitions. [2022-02-11 00:05:08,095 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 790 transitions. Word has length 21 [2022-02-11 00:05:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:08,096 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 790 transitions. [2022-02-11 00:05:08,096 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) [2022-02-11 00:05:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 790 transitions. [2022-02-11 00:05:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:08,096 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:08,096 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:08,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:08,296 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 [2022-02-11 00:05:08,297 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:08,297 INFO L85 PathProgramCache]: Analyzing trace with hash -391607054, now seen corresponding path program 69 times [2022-02-11 00:05:08,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:08,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850858107] [2022-02-11 00:05:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:08,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:08,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:08,491 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850858107] [2022-02-11 00:05:08,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850858107] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:08,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468796664] [2022-02-11 00:05:08,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:05:08,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:08,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:08,493 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) [2022-02-11 00:05:08,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-02-11 00:05:08,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:05:08,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:08,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:08,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:08,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:09,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468796664] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:09,547 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:09,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:09,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716923247] [2022-02-11 00:05:09,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:09,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:09,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:09,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:09,549 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) [2022-02-11 00:05:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:13,740 INFO L93 Difference]: Finished difference Result 738 states and 1505 transitions. [2022-02-11 00:05:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 00:05:13,740 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 [2022-02-11 00:05:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:13,741 INFO L225 Difference]: With dead ends: 738 [2022-02-11 00:05:13,741 INFO L226 Difference]: Without dead ends: 735 [2022-02-11 00:05:13,742 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5227 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2115, Invalid=15177, Unknown=0, NotChecked=0, Total=17292 [2022-02-11 00:05:13,742 INFO L934 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, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:13,742 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 708 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:05:13,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-02-11 00:05:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 349. [2022-02-11 00:05:13,747 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) [2022-02-11 00:05:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 786 transitions. [2022-02-11 00:05:13,747 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 786 transitions. Word has length 21 [2022-02-11 00:05:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:13,747 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 786 transitions. [2022-02-11 00:05:13,747 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) [2022-02-11 00:05:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 786 transitions. [2022-02-11 00:05:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:13,748 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:13,748 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:13,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-02-11 00:05:13,948 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 [2022-02-11 00:05:13,948 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:13,949 INFO L85 PathProgramCache]: Analyzing trace with hash 352111858, now seen corresponding path program 70 times [2022-02-11 00:05:13,949 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:13,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141300020] [2022-02-11 00:05:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:13,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:14,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:14,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141300020] [2022-02-11 00:05:14,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141300020] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:14,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684948688] [2022-02-11 00:05:14,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:05:14,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:14,147 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) [2022-02-11 00:05:14,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-02-11 00:05:14,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:05:14,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:14,168 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:14,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:14,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:15,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684948688] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:15,212 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:15,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:15,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289768232] [2022-02-11 00:05:15,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:15,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:15,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:15,213 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) [2022-02-11 00:05:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:22,343 INFO L93 Difference]: Finished difference Result 825 states and 1684 transitions. [2022-02-11 00:05:22,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-02-11 00:05:22,343 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 [2022-02-11 00:05:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:22,344 INFO L225 Difference]: With dead ends: 825 [2022-02-11 00:05:22,344 INFO L226 Difference]: Without dead ends: 822 [2022-02-11 00:05:22,346 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12099 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=4246, Invalid=29794, Unknown=0, NotChecked=0, Total=34040 [2022-02-11 00:05:22,347 INFO L934 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, 1.2s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:22,347 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 841 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-11 00:05:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-02-11 00:05:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 346. [2022-02-11 00:05:22,351 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) [2022-02-11 00:05:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 777 transitions. [2022-02-11 00:05:22,352 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 777 transitions. Word has length 21 [2022-02-11 00:05:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:22,352 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 777 transitions. [2022-02-11 00:05:22,352 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) [2022-02-11 00:05:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 777 transitions. [2022-02-11 00:05:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:22,352 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:22,352 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:22,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-02-11 00:05:22,553 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 [2022-02-11 00:05:22,553 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash -214413160, now seen corresponding path program 71 times [2022-02-11 00:05:22,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:22,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705934709] [2022-02-11 00:05:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:22,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:22,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:22,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705934709] [2022-02-11 00:05:22,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705934709] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:22,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132967286] [2022-02-11 00:05:22,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:05:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:22,760 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) [2022-02-11 00:05:22,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-02-11 00:05:22,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:05:22,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:22,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:22,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:23,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:23,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132967286] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:23,838 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:23,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:23,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832099282] [2022-02-11 00:05:23,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:23,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:23,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:23,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:23,840 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) [2022-02-11 00:05:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:27,284 INFO L93 Difference]: Finished difference Result 690 states and 1405 transitions. [2022-02-11 00:05:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-11 00:05:27,285 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 [2022-02-11 00:05:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:27,286 INFO L225 Difference]: With dead ends: 690 [2022-02-11 00:05:27,286 INFO L226 Difference]: Without dead ends: 687 [2022-02-11 00:05:27,287 INFO L933 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 [2022-02-11 00:05:27,287 INFO L934 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 [2022-02-11 00:05:27,287 INFO L935 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] [2022-02-11 00:05:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-02-11 00:05:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 347. [2022-02-11 00:05:27,292 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) [2022-02-11 00:05:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 779 transitions. [2022-02-11 00:05:27,293 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 779 transitions. Word has length 21 [2022-02-11 00:05:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:27,293 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 779 transitions. [2022-02-11 00:05:27,293 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) [2022-02-11 00:05:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 779 transitions. [2022-02-11 00:05:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:27,294 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:27,294 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:27,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-02-11 00:05:27,494 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 [2022-02-11 00:05:27,495 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:27,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1132363350, now seen corresponding path program 72 times [2022-02-11 00:05:27,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:27,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393595856] [2022-02-11 00:05:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:27,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:27,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:27,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393595856] [2022-02-11 00:05:27,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393595856] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:27,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346891665] [2022-02-11 00:05:27,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:05:27,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:27,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:27,689 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) [2022-02-11 00:05:27,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-02-11 00:05:27,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:05:27,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:27,711 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:27,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:28,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:28,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346891665] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:28,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:28,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:28,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092262595] [2022-02-11 00:05:28,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:28,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:28,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:28,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:28,756 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) [2022-02-11 00:05:32,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:32,647 INFO L93 Difference]: Finished difference Result 711 states and 1455 transitions. [2022-02-11 00:05:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 00:05:32,648 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:05:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:32,649 INFO L225 Difference]: With dead ends: 711 [2022-02-11 00:05:32,649 INFO L226 Difference]: Without dead ends: 708 [2022-02-11 00:05:32,650 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5122 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2189, Invalid=15103, Unknown=0, NotChecked=0, Total=17292 [2022-02-11 00:05:32,650 INFO L934 BasicCegarLoop]: 49 mSDtfsCounter, 372 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-02-11 00:05:32,650 INFO L935 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] [2022-02-11 00:05:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-02-11 00:05:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 343. [2022-02-11 00:05:32,654 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) [2022-02-11 00:05:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 771 transitions. [2022-02-11 00:05:32,655 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 771 transitions. Word has length 21 [2022-02-11 00:05:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:32,655 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 771 transitions. [2022-02-11 00:05:32,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:05:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 771 transitions. [2022-02-11 00:05:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:32,655 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:32,655 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:32,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-02-11 00:05:32,856 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 [2022-02-11 00:05:32,856 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1320495092, now seen corresponding path program 73 times [2022-02-11 00:05:32,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:32,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282832333] [2022-02-11 00:05:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:33,058 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:33,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282832333] [2022-02-11 00:05:33,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282832333] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:33,058 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003828012] [2022-02-11 00:05:33,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:05:33,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:33,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:33,060 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) [2022-02-11 00:05:33,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-02-11 00:05:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:33,086 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:33,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:33,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:34,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003828012] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:34,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:34,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:34,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244323264] [2022-02-11 00:05:34,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:34,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:34,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:34,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:34,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:34,160 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) [2022-02-11 00:05:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:37,105 INFO L93 Difference]: Finished difference Result 656 states and 1315 transitions. [2022-02-11 00:05:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-11 00:05:37,105 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 [2022-02-11 00:05:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:37,106 INFO L225 Difference]: With dead ends: 656 [2022-02-11 00:05:37,107 INFO L226 Difference]: Without dead ends: 653 [2022-02-11 00:05:37,107 INFO L933 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 [2022-02-11 00:05:37,108 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 336 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:05:37,108 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 575 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:05:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-02-11 00:05:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 348. [2022-02-11 00:05:37,112 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) [2022-02-11 00:05:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 782 transitions. [2022-02-11 00:05:37,113 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 782 transitions. Word has length 21 [2022-02-11 00:05:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:37,113 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 782 transitions. [2022-02-11 00:05:37,113 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) [2022-02-11 00:05:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 782 transitions. [2022-02-11 00:05:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:37,113 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:37,113 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:37,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-02-11 00:05:37,314 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 [2022-02-11 00:05:37,314 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash -428320386, now seen corresponding path program 74 times [2022-02-11 00:05:37,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:37,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722653361] [2022-02-11 00:05:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:37,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:37,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722653361] [2022-02-11 00:05:37,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722653361] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:37,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951644832] [2022-02-11 00:05:37,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:05:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:37,516 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) [2022-02-11 00:05:37,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-02-11 00:05:37,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:05:37,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:37,536 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:37,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:38,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:38,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951644832] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:38,605 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:38,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:38,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285211996] [2022-02-11 00:05:38,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:38,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:38,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:38,606 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) [2022-02-11 00:05:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:41,227 INFO L93 Difference]: Finished difference Result 662 states and 1325 transitions. [2022-02-11 00:05:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-11 00:05:41,228 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 [2022-02-11 00:05:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:41,229 INFO L225 Difference]: With dead ends: 662 [2022-02-11 00:05:41,229 INFO L226 Difference]: Without dead ends: 659 [2022-02-11 00:05:41,230 INFO L933 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 [2022-02-11 00:05:41,230 INFO L934 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 [2022-02-11 00:05:41,230 INFO L935 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] [2022-02-11 00:05:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-02-11 00:05:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 350. [2022-02-11 00:05:41,236 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) [2022-02-11 00:05:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 786 transitions. [2022-02-11 00:05:41,237 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 786 transitions. Word has length 21 [2022-02-11 00:05:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:41,237 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 786 transitions. [2022-02-11 00:05:41,237 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) [2022-02-11 00:05:41,237 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 786 transitions. [2022-02-11 00:05:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:41,237 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:41,238 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:41,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-02-11 00:05:41,439 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 [2022-02-11 00:05:41,439 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2010964346, now seen corresponding path program 75 times [2022-02-11 00:05:41,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:41,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201371786] [2022-02-11 00:05:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:41,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:41,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:41,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201371786] [2022-02-11 00:05:41,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201371786] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:41,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896643891] [2022-02-11 00:05:41,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:05:41,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:41,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:41,647 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) [2022-02-11 00:05:41,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-02-11 00:05:41,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:05:41,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:41,667 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:41,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:42,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:42,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896643891] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:42,653 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:42,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:42,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718036397] [2022-02-11 00:05:42,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:42,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:42,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:42,654 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) [2022-02-11 00:05:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:46,235 INFO L93 Difference]: Finished difference Result 690 states and 1394 transitions. [2022-02-11 00:05:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-11 00:05:46,236 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 [2022-02-11 00:05:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:46,237 INFO L225 Difference]: With dead ends: 690 [2022-02-11 00:05:46,237 INFO L226 Difference]: Without dead ends: 687 [2022-02-11 00:05:46,238 INFO L933 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 [2022-02-11 00:05:46,238 INFO L934 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 [2022-02-11 00:05:46,238 INFO L935 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] [2022-02-11 00:05:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-02-11 00:05:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 346. [2022-02-11 00:05:46,242 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) [2022-02-11 00:05:46,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 778 transitions. [2022-02-11 00:05:46,242 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 778 transitions. Word has length 21 [2022-02-11 00:05:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:46,243 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 778 transitions. [2022-02-11 00:05:46,243 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) [2022-02-11 00:05:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 778 transitions. [2022-02-11 00:05:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:46,243 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:46,243 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:46,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-02-11 00:05:46,443 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 [2022-02-11 00:05:46,444 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -668766534, now seen corresponding path program 76 times [2022-02-11 00:05:46,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:46,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314647644] [2022-02-11 00:05:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:46,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:46,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314647644] [2022-02-11 00:05:46,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314647644] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:46,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679844064] [2022-02-11 00:05:46,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:05:46,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:46,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:46,638 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) [2022-02-11 00:05:46,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-02-11 00:05:46,657 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:05:46,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:46,658 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:46,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:47,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:47,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679844064] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:47,698 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:47,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:47,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199551784] [2022-02-11 00:05:47,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:47,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:47,699 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:47,699 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) [2022-02-11 00:05:50,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:50,726 INFO L93 Difference]: Finished difference Result 677 states and 1357 transitions. [2022-02-11 00:05:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-11 00:05:50,726 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 [2022-02-11 00:05:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:50,727 INFO L225 Difference]: With dead ends: 677 [2022-02-11 00:05:50,727 INFO L226 Difference]: Without dead ends: 674 [2022-02-11 00:05:50,728 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3245 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1498, Invalid=10492, Unknown=0, NotChecked=0, Total=11990 [2022-02-11 00:05:50,728 INFO L934 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 [2022-02-11 00:05:50,728 INFO L935 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] [2022-02-11 00:05:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-02-11 00:05:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 350. [2022-02-11 00:05:50,736 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) [2022-02-11 00:05:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 787 transitions. [2022-02-11 00:05:50,737 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 787 transitions. Word has length 21 [2022-02-11 00:05:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:50,737 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 787 transitions. [2022-02-11 00:05:50,737 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) [2022-02-11 00:05:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 787 transitions. [2022-02-11 00:05:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:50,737 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:50,737 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:50,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-02-11 00:05:50,938 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 [2022-02-11 00:05:50,938 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1770518198, now seen corresponding path program 77 times [2022-02-11 00:05:50,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:50,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731742022] [2022-02-11 00:05:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:50,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:51,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:51,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731742022] [2022-02-11 00:05:51,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731742022] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:51,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613994983] [2022-02-11 00:05:51,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:05:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:51,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:51,144 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) [2022-02-11 00:05:51,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-02-11 00:05:51,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:05:51,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:51,168 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:51,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:52,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613994983] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:52,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:52,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:52,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510737044] [2022-02-11 00:05:52,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:52,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:52,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:52,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:52,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:52,195 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) [2022-02-11 00:05:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:05:55,769 INFO L93 Difference]: Finished difference Result 706 states and 1419 transitions. [2022-02-11 00:05:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-11 00:05:55,770 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 [2022-02-11 00:05:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:05:55,771 INFO L225 Difference]: With dead ends: 706 [2022-02-11 00:05:55,771 INFO L226 Difference]: Without dead ends: 703 [2022-02-11 00:05:55,772 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4131 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1779, Invalid=12741, Unknown=0, NotChecked=0, Total=14520 [2022-02-11 00:05:55,772 INFO L934 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 [2022-02-11 00:05:55,772 INFO L935 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] [2022-02-11 00:05:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-02-11 00:05:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 353. [2022-02-11 00:05:55,776 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) [2022-02-11 00:05:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 794 transitions. [2022-02-11 00:05:55,777 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 794 transitions. Word has length 21 [2022-02-11 00:05:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:05:55,777 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 794 transitions. [2022-02-11 00:05:55,777 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) [2022-02-11 00:05:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 794 transitions. [2022-02-11 00:05:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:05:55,777 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:05:55,777 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:05:55,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-02-11 00:05:55,978 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 [2022-02-11 00:05:55,978 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:05:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:05:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1780730186, now seen corresponding path program 78 times [2022-02-11 00:05:55,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:05:55,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758981662] [2022-02-11 00:05:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:05:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:05:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:05:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:56,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:05:56,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758981662] [2022-02-11 00:05:56,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758981662] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:05:56,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195142605] [2022-02-11 00:05:56,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:05:56,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:05:56,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:05:56,174 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) [2022-02-11 00:05:56,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-02-11 00:05:56,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:05:56,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:05:56,195 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:05:56,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:05:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:56,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:05:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:05:57,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195142605] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:05:57,226 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:05:57,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:05:57,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46787567] [2022-02-11 00:05:57,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:05:57,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:05:57,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:05:57,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:05:57,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:05:57,227 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) [2022-02-11 00:06:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:02,504 INFO L93 Difference]: Finished difference Result 754 states and 1519 transitions. [2022-02-11 00:06:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-11 00:06:02,504 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 [2022-02-11 00:06:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:02,505 INFO L225 Difference]: With dead ends: 754 [2022-02-11 00:06:02,505 INFO L226 Difference]: Without dead ends: 751 [2022-02-11 00:06:02,506 INFO L933 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 [2022-02-11 00:06:02,506 INFO L934 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 [2022-02-11 00:06:02,506 INFO L935 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] [2022-02-11 00:06:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-02-11 00:06:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 351. [2022-02-11 00:06:02,510 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) [2022-02-11 00:06:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-02-11 00:06:02,511 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-02-11 00:06:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:02,511 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-02-11 00:06:02,511 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) [2022-02-11 00:06:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-02-11 00:06:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:02,511 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:02,512 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:02,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-02-11 00:06:02,712 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 [2022-02-11 00:06:02,712 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1904356064, now seen corresponding path program 79 times [2022-02-11 00:06:02,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:02,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595726137] [2022-02-11 00:06:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:02,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:02,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595726137] [2022-02-11 00:06:02,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595726137] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:02,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777981589] [2022-02-11 00:06:02,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:06:02,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:02,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:02,923 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) [2022-02-11 00:06:02,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-02-11 00:06:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:02,943 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:02,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:03,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:03,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777981589] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:03,970 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:03,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:03,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691631560] [2022-02-11 00:06:03,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:03,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:03,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:03,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:03,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:03,971 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) [2022-02-11 00:06:07,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:07,336 INFO L93 Difference]: Finished difference Result 691 states and 1406 transitions. [2022-02-11 00:06:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-11 00:06:07,337 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 [2022-02-11 00:06:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:07,338 INFO L225 Difference]: With dead ends: 691 [2022-02-11 00:06:07,338 INFO L226 Difference]: Without dead ends: 688 [2022-02-11 00:06:07,339 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3798 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1809, Invalid=11763, Unknown=0, NotChecked=0, Total=13572 [2022-02-11 00:06:07,339 INFO L934 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 [2022-02-11 00:06:07,339 INFO L935 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] [2022-02-11 00:06:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-02-11 00:06:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 352. [2022-02-11 00:06:07,343 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) [2022-02-11 00:06:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 790 transitions. [2022-02-11 00:06:07,344 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 790 transitions. Word has length 21 [2022-02-11 00:06:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:07,344 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 790 transitions. [2022-02-11 00:06:07,344 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) [2022-02-11 00:06:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 790 transitions. [2022-02-11 00:06:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:07,344 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:07,344 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:07,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-02-11 00:06:07,544 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 [2022-02-11 00:06:07,545 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:07,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1472661042, now seen corresponding path program 80 times [2022-02-11 00:06:07,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:07,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438314396] [2022-02-11 00:06:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:07,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:07,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438314396] [2022-02-11 00:06:07,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438314396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:07,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576707003] [2022-02-11 00:06:07,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:06:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:07,751 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) [2022-02-11 00:06:07,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-02-11 00:06:07,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:06:07,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:07,770 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:07,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:08,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:08,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576707003] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:08,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:08,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:08,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108316903] [2022-02-11 00:06:08,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:08,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:08,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:08,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:08,799 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) [2022-02-11 00:06:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:12,639 INFO L93 Difference]: Finished difference Result 706 states and 1445 transitions. [2022-02-11 00:06:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-11 00:06:12,640 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 [2022-02-11 00:06:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:12,641 INFO L225 Difference]: With dead ends: 706 [2022-02-11 00:06:12,641 INFO L226 Difference]: Without dead ends: 703 [2022-02-11 00:06:12,642 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5031 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2285, Invalid=14745, Unknown=0, NotChecked=0, Total=17030 [2022-02-11 00:06:12,642 INFO L934 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 [2022-02-11 00:06:12,642 INFO L935 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] [2022-02-11 00:06:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-02-11 00:06:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 349. [2022-02-11 00:06:12,646 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) [2022-02-11 00:06:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-02-11 00:06:12,647 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-02-11 00:06:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:12,647 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-02-11 00:06:12,647 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) [2022-02-11 00:06:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-02-11 00:06:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:12,648 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:12,648 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:12,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-02-11 00:06:12,848 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 [2022-02-11 00:06:12,848 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash -134877002, now seen corresponding path program 81 times [2022-02-11 00:06:12,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:12,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471735965] [2022-02-11 00:06:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:13,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:13,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471735965] [2022-02-11 00:06:13,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471735965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:13,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987041735] [2022-02-11 00:06:13,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:06:13,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:13,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:13,031 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) [2022-02-11 00:06:13,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-02-11 00:06:13,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:06:13,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:13,051 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:13,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:13,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:14,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987041735] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:14,034 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:14,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:14,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890475840] [2022-02-11 00:06:14,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:14,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:14,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:14,035 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) [2022-02-11 00:06:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:16,152 INFO L93 Difference]: Finished difference Result 651 states and 1316 transitions. [2022-02-11 00:06:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-11 00:06:16,153 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 [2022-02-11 00:06:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:16,154 INFO L225 Difference]: With dead ends: 651 [2022-02-11 00:06:16,154 INFO L226 Difference]: Without dead ends: 648 [2022-02-11 00:06:16,155 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2445 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1214, Invalid=8292, Unknown=0, NotChecked=0, Total=9506 [2022-02-11 00:06:16,155 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 250 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:16,155 INFO L935 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] [2022-02-11 00:06:16,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-02-11 00:06:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 345. [2022-02-11 00:06:16,159 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) [2022-02-11 00:06:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 775 transitions. [2022-02-11 00:06:16,159 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 775 transitions. Word has length 21 [2022-02-11 00:06:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:16,159 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 775 transitions. [2022-02-11 00:06:16,159 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) [2022-02-11 00:06:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 775 transitions. [2022-02-11 00:06:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:16,160 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:16,160 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:16,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-02-11 00:06:16,360 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 [2022-02-11 00:06:16,360 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1863683918, now seen corresponding path program 82 times [2022-02-11 00:06:16,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:16,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98822574] [2022-02-11 00:06:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:16,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:16,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:16,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98822574] [2022-02-11 00:06:16,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98822574] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:16,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080502987] [2022-02-11 00:06:16,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:06:16,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:16,549 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) [2022-02-11 00:06:16,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-02-11 00:06:16,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:06:16,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:16,567 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:16,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:17,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:17,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080502987] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:17,598 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:17,598 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:17,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309547375] [2022-02-11 00:06:17,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:17,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:17,599 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:17,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:17,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2014, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:17,599 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) [2022-02-11 00:06:21,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:21,505 INFO L93 Difference]: Finished difference Result 747 states and 1517 transitions. [2022-02-11 00:06:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-11 00:06:21,505 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 [2022-02-11 00:06:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:21,506 INFO L225 Difference]: With dead ends: 747 [2022-02-11 00:06:21,506 INFO L226 Difference]: Without dead ends: 741 [2022-02-11 00:06:21,508 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5429 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2452, Invalid=15638, Unknown=0, NotChecked=0, Total=18090 [2022-02-11 00:06:21,508 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 403 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:21,508 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 548 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:06:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-02-11 00:06:21,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 349. [2022-02-11 00:06:21,513 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) [2022-02-11 00:06:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 784 transitions. [2022-02-11 00:06:21,513 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 784 transitions. Word has length 21 [2022-02-11 00:06:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:21,513 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 784 transitions. [2022-02-11 00:06:21,513 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) [2022-02-11 00:06:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 784 transitions. [2022-02-11 00:06:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:21,514 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:21,514 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:21,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-02-11 00:06:21,714 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 [2022-02-11 00:06:21,714 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash 817716644, now seen corresponding path program 83 times [2022-02-11 00:06:21,715 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:21,715 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824254592] [2022-02-11 00:06:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:21,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:21,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:21,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824254592] [2022-02-11 00:06:21,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824254592] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:21,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81097633] [2022-02-11 00:06:21,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:06:21,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:21,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:21,898 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) [2022-02-11 00:06:21,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-02-11 00:06:21,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:06:21,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:21,925 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:21,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:22,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:22,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81097633] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:22,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:22,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:22,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692771128] [2022-02-11 00:06:22,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:22,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:22,894 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2007, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:22,894 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) [2022-02-11 00:06:26,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:26,366 INFO L93 Difference]: Finished difference Result 707 states and 1430 transitions. [2022-02-11 00:06:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-11 00:06:26,367 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 [2022-02-11 00:06:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:26,368 INFO L225 Difference]: With dead ends: 707 [2022-02-11 00:06:26,368 INFO L226 Difference]: Without dead ends: 701 [2022-02-11 00:06:26,369 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4384 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2129, Invalid=13123, Unknown=0, NotChecked=0, Total=15252 [2022-02-11 00:06:26,369 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 345 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:26,369 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 714 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:06:26,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-02-11 00:06:26,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 351. [2022-02-11 00:06:26,373 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) [2022-02-11 00:06:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 788 transitions. [2022-02-11 00:06:26,373 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 788 transitions. Word has length 21 [2022-02-11 00:06:26,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:26,374 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 788 transitions. [2022-02-11 00:06:26,374 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) [2022-02-11 00:06:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 788 transitions. [2022-02-11 00:06:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:26,374 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:26,374 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:26,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-02-11 00:06:26,576 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 [2022-02-11 00:06:26,576 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash -100233546, now seen corresponding path program 84 times [2022-02-11 00:06:26,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:26,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359466465] [2022-02-11 00:06:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:26,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:26,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359466465] [2022-02-11 00:06:26,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359466465] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:26,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041665066] [2022-02-11 00:06:26,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:06:26,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:26,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:26,763 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) [2022-02-11 00:06:26,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-02-11 00:06:26,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:06:26,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:26,782 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:26,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:27,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:27,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041665066] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:27,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:27,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:27,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046698494] [2022-02-11 00:06:27,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:27,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:27,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:27,764 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) [2022-02-11 00:06:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:31,999 INFO L93 Difference]: Finished difference Result 734 states and 1491 transitions. [2022-02-11 00:06:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-11 00:06:31,999 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 [2022-02-11 00:06:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:32,000 INFO L225 Difference]: With dead ends: 734 [2022-02-11 00:06:32,000 INFO L226 Difference]: Without dead ends: 728 [2022-02-11 00:06:32,001 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6254 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2781, Invalid=17525, Unknown=0, NotChecked=0, Total=20306 [2022-02-11 00:06:32,001 INFO L934 BasicCegarLoop]: 50 mSDtfsCounter, 366 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:32,001 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 685 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:06:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-02-11 00:06:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 342. [2022-02-11 00:06:32,006 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) [2022-02-11 00:06:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 769 transitions. [2022-02-11 00:06:32,006 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 769 transitions. Word has length 21 [2022-02-11 00:06:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:32,006 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 769 transitions. [2022-02-11 00:06:32,006 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) [2022-02-11 00:06:32,006 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 769 transitions. [2022-02-11 00:06:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:32,007 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:32,007 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:32,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-02-11 00:06:32,207 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 [2022-02-11 00:06:32,207 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:32,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1701538496, now seen corresponding path program 85 times [2022-02-11 00:06:32,207 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:32,207 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992513716] [2022-02-11 00:06:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:32,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:32,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992513716] [2022-02-11 00:06:32,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992513716] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:32,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958178525] [2022-02-11 00:06:32,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:06:32,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:32,391 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) [2022-02-11 00:06:32,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-02-11 00:06:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:32,415 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:32,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:32,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:33,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958178525] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:33,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:33,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:33,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233438949] [2022-02-11 00:06:33,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:33,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:33,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:33,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:33,388 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) [2022-02-11 00:06:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:36,646 INFO L93 Difference]: Finished difference Result 699 states and 1387 transitions. [2022-02-11 00:06:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-11 00:06:36,646 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 [2022-02-11 00:06:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:36,647 INFO L225 Difference]: With dead ends: 699 [2022-02-11 00:06:36,647 INFO L226 Difference]: Without dead ends: 696 [2022-02-11 00:06:36,648 INFO L933 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 [2022-02-11 00:06:36,648 INFO L934 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 [2022-02-11 00:06:36,648 INFO L935 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] [2022-02-11 00:06:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-02-11 00:06:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 348. [2022-02-11 00:06:36,652 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) [2022-02-11 00:06:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 782 transitions. [2022-02-11 00:06:36,653 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 782 transitions. Word has length 21 [2022-02-11 00:06:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:36,653 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 782 transitions. [2022-02-11 00:06:36,653 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) [2022-02-11 00:06:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 782 transitions. [2022-02-11 00:06:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:36,653 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:36,653 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:36,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-02-11 00:06:36,854 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 [2022-02-11 00:06:36,854 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1701254094, now seen corresponding path program 86 times [2022-02-11 00:06:36,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:36,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816063235] [2022-02-11 00:06:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:37,038 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:37,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816063235] [2022-02-11 00:06:37,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816063235] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:37,038 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135494224] [2022-02-11 00:06:37,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:06:37,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:37,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:37,039 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) [2022-02-11 00:06:37,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-02-11 00:06:37,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:06:37,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:37,058 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:37,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:37,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:38,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135494224] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:38,039 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:38,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:38,040 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939024393] [2022-02-11 00:06:38,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:38,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:38,040 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:38,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:38,040 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) [2022-02-11 00:06:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:40,934 INFO L93 Difference]: Finished difference Result 705 states and 1397 transitions. [2022-02-11 00:06:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-11 00:06:40,935 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 [2022-02-11 00:06:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:40,935 INFO L225 Difference]: With dead ends: 705 [2022-02-11 00:06:40,936 INFO L226 Difference]: Without dead ends: 702 [2022-02-11 00:06:40,936 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3127 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1425, Invalid=10131, Unknown=0, NotChecked=0, Total=11556 [2022-02-11 00:06:40,937 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 367 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:06:40,937 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 721 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:06:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-02-11 00:06:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 346. [2022-02-11 00:06:40,941 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) [2022-02-11 00:06:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 778 transitions. [2022-02-11 00:06:40,941 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 778 transitions. Word has length 21 [2022-02-11 00:06:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:40,941 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 778 transitions. [2022-02-11 00:06:40,942 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) [2022-02-11 00:06:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 778 transitions. [2022-02-11 00:06:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:40,942 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:40,942 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:40,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2022-02-11 00:06:41,142 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 [2022-02-11 00:06:41,143 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:41,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:41,143 INFO L85 PathProgramCache]: Analyzing trace with hash 738030638, now seen corresponding path program 87 times [2022-02-11 00:06:41,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:41,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635341802] [2022-02-11 00:06:41,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:41,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:41,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:41,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635341802] [2022-02-11 00:06:41,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635341802] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:41,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933485504] [2022-02-11 00:06:41,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:06:41,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:41,327 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) [2022-02-11 00:06:41,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-02-11 00:06:41,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:06:41,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:41,347 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:41,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:41,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:42,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933485504] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:42,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:42,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:42,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392225916] [2022-02-11 00:06:42,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:42,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:42,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:42,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:42,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:42,332 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) [2022-02-11 00:06:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:46,252 INFO L93 Difference]: Finished difference Result 738 states and 1475 transitions. [2022-02-11 00:06:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-11 00:06:46,252 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 [2022-02-11 00:06:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:46,253 INFO L225 Difference]: With dead ends: 738 [2022-02-11 00:06:46,253 INFO L226 Difference]: Without dead ends: 735 [2022-02-11 00:06:46,254 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4921 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2015, Invalid=14755, Unknown=0, NotChecked=0, Total=16770 [2022-02-11 00:06:46,254 INFO L934 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 [2022-02-11 00:06:46,254 INFO L935 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] [2022-02-11 00:06:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-02-11 00:06:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 352. [2022-02-11 00:06:46,258 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) [2022-02-11 00:06:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 790 transitions. [2022-02-11 00:06:46,259 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 790 transitions. Word has length 21 [2022-02-11 00:06:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:46,259 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 790 transitions. [2022-02-11 00:06:46,259 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) [2022-02-11 00:06:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 790 transitions. [2022-02-11 00:06:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:46,260 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:46,260 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:46,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-02-11 00:06:46,460 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 [2022-02-11 00:06:46,460 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash 730707818, now seen corresponding path program 88 times [2022-02-11 00:06:46,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:46,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644387724] [2022-02-11 00:06:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:46,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:46,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644387724] [2022-02-11 00:06:46,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644387724] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:46,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416637083] [2022-02-11 00:06:46,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:06:46,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:46,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:46,651 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) [2022-02-11 00:06:46,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-02-11 00:06:46,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:06:46,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:46,670 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:46,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:47,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:47,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416637083] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:47,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:47,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:06:47,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91910769] [2022-02-11 00:06:47,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:47,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:06:47,611 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:06:47,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:06:47,612 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) [2022-02-11 00:06:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:50,735 INFO L93 Difference]: Finished difference Result 766 states and 1531 transitions. [2022-02-11 00:06:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-11 00:06:50,736 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 [2022-02-11 00:06:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:50,737 INFO L225 Difference]: With dead ends: 766 [2022-02-11 00:06:50,737 INFO L226 Difference]: Without dead ends: 759 [2022-02-11 00:06:50,738 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4131 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1869, Invalid=12411, Unknown=0, NotChecked=0, Total=14280 [2022-02-11 00:06:50,738 INFO L934 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 [2022-02-11 00:06:50,738 INFO L935 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] [2022-02-11 00:06:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-02-11 00:06:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 350. [2022-02-11 00:06:50,743 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) [2022-02-11 00:06:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 787 transitions. [2022-02-11 00:06:50,743 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 787 transitions. Word has length 21 [2022-02-11 00:06:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:50,743 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 787 transitions. [2022-02-11 00:06:50,743 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) [2022-02-11 00:06:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 787 transitions. [2022-02-11 00:06:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:50,744 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:50,744 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:50,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-02-11 00:06:50,944 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 [2022-02-11 00:06:50,944 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:50,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1941700242, now seen corresponding path program 89 times [2022-02-11 00:06:50,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:50,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061155712] [2022-02-11 00:06:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:50,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:51,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:51,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061155712] [2022-02-11 00:06:51,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061155712] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:51,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542614927] [2022-02-11 00:06:51,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:06:51,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:51,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:51,131 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) [2022-02-11 00:06:51,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-02-11 00:06:51,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:06:51,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:51,153 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:51,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:51,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:52,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542614927] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:52,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:52,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:52,135 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615051298] [2022-02-11 00:06:52,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:52,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:52,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:52,136 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) [2022-02-11 00:06:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:06:55,676 INFO L93 Difference]: Finished difference Result 721 states and 1431 transitions. [2022-02-11 00:06:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-11 00:06:55,676 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 [2022-02-11 00:06:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:06:55,677 INFO L225 Difference]: With dead ends: 721 [2022-02-11 00:06:55,677 INFO L226 Difference]: Without dead ends: 718 [2022-02-11 00:06:55,678 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3740 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1662, Invalid=11678, Unknown=0, NotChecked=0, Total=13340 [2022-02-11 00:06:55,678 INFO L934 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 [2022-02-11 00:06:55,678 INFO L935 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] [2022-02-11 00:06:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-02-11 00:06:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 352. [2022-02-11 00:06:55,682 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) [2022-02-11 00:06:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 792 transitions. [2022-02-11 00:06:55,683 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 792 transitions. Word has length 21 [2022-02-11 00:06:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:06:55,683 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 792 transitions. [2022-02-11 00:06:55,683 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) [2022-02-11 00:06:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 792 transitions. [2022-02-11 00:06:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:06:55,683 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:06:55,684 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:06:55,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-02-11 00:06:55,884 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 [2022-02-11 00:06:55,884 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:06:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:06:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 497584490, now seen corresponding path program 90 times [2022-02-11 00:06:55,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:06:55,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043588702] [2022-02-11 00:06:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:06:55,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:06:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:06:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:56,075 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:06:56,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043588702] [2022-02-11 00:06:56,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043588702] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:06:56,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564010218] [2022-02-11 00:06:56,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:06:56,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:06:56,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:06:56,077 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) [2022-02-11 00:06:56,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-02-11 00:06:56,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:06:56,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:06:56,096 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:06:56,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:06:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:56,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:06:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:06:57,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564010218] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:06:57,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:06:57,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:06:57,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450576673] [2022-02-11 00:06:57,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:06:57,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:06:57,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:06:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:06:57,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:06:57,077 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) [2022-02-11 00:07:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:01,297 INFO L93 Difference]: Finished difference Result 758 states and 1509 transitions. [2022-02-11 00:07:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 00:07:01,297 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 [2022-02-11 00:07:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:01,298 INFO L225 Difference]: With dead ends: 758 [2022-02-11 00:07:01,298 INFO L226 Difference]: Without dead ends: 755 [2022-02-11 00:07:01,299 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5130 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2064, Invalid=15228, Unknown=0, NotChecked=0, Total=17292 [2022-02-11 00:07:01,299 INFO L934 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 [2022-02-11 00:07:01,299 INFO L935 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] [2022-02-11 00:07:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-02-11 00:07:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 362. [2022-02-11 00:07:01,304 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) [2022-02-11 00:07:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 813 transitions. [2022-02-11 00:07:01,304 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 813 transitions. Word has length 21 [2022-02-11 00:07:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:01,304 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 813 transitions. [2022-02-11 00:07:01,304 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) [2022-02-11 00:07:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 813 transitions. [2022-02-11 00:07:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:01,305 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:01,305 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:01,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:01,506 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 [2022-02-11 00:07:01,506 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:01,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:01,507 INFO L85 PathProgramCache]: Analyzing trace with hash 490261670, now seen corresponding path program 91 times [2022-02-11 00:07:01,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:01,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535237870] [2022-02-11 00:07:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:01,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:01,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:01,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535237870] [2022-02-11 00:07:01,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535237870] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:01,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587089915] [2022-02-11 00:07:01,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:07:01,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:01,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:01,696 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) [2022-02-11 00:07:01,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-02-11 00:07:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:01,714 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:01,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:02,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:02,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587089915] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:02,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:02,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:07:02,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931255996] [2022-02-11 00:07:02,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:02,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:07:02,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:02,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:07:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:07:02,661 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) [2022-02-11 00:07:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:05,983 INFO L93 Difference]: Finished difference Result 785 states and 1568 transitions. [2022-02-11 00:07:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-11 00:07:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-11 00:07:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:05,985 INFO L225 Difference]: With dead ends: 785 [2022-02-11 00:07:05,985 INFO L226 Difference]: Without dead ends: 778 [2022-02-11 00:07:05,986 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1986, Invalid=13020, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 00:07:05,986 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 487 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:05,986 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 678 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:07:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-02-11 00:07:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 362. [2022-02-11 00:07:05,991 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) [2022-02-11 00:07:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 814 transitions. [2022-02-11 00:07:05,992 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 814 transitions. Word has length 21 [2022-02-11 00:07:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:05,992 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 814 transitions. [2022-02-11 00:07:05,992 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) [2022-02-11 00:07:05,992 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 814 transitions. [2022-02-11 00:07:05,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:05,993 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:05,993 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:06,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:06,195 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 [2022-02-11 00:07:06,196 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1241303402, now seen corresponding path program 92 times [2022-02-11 00:07:06,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:06,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51450735] [2022-02-11 00:07:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:06,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:06,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51450735] [2022-02-11 00:07:06,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51450735] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:06,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341365674] [2022-02-11 00:07:06,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:07:06,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:06,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:06,388 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) [2022-02-11 00:07:06,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-02-11 00:07:06,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:07:06,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:06,409 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:06,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:06,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:07,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341365674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:07,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:07,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:07:07,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704644368] [2022-02-11 00:07:07,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:07,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:07:07,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:07,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:07:07,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:07:07,449 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) [2022-02-11 00:07:14,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:14,268 INFO L93 Difference]: Finished difference Result 822 states and 1645 transitions. [2022-02-11 00:07:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-11 00:07:14,269 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 [2022-02-11 00:07:14,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:14,270 INFO L225 Difference]: With dead ends: 822 [2022-02-11 00:07:14,270 INFO L226 Difference]: Without dead ends: 819 [2022-02-11 00:07:14,271 INFO L933 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 [2022-02-11 00:07:14,271 INFO L934 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:14,271 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 691 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 00:07:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-02-11 00:07:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 368. [2022-02-11 00:07:14,276 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) [2022-02-11 00:07:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 828 transitions. [2022-02-11 00:07:14,276 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 828 transitions. Word has length 21 [2022-02-11 00:07:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:14,277 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 828 transitions. [2022-02-11 00:07:14,277 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) [2022-02-11 00:07:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 828 transitions. [2022-02-11 00:07:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:14,277 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:14,277 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:14,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:14,477 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 [2022-02-11 00:07:14,478 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1233980582, now seen corresponding path program 93 times [2022-02-11 00:07:14,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:14,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686463254] [2022-02-11 00:07:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:14,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:14,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:14,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686463254] [2022-02-11 00:07:14,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686463254] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:14,660 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581019674] [2022-02-11 00:07:14,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:07:14,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:14,661 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) [2022-02-11 00:07:14,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-02-11 00:07:14,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:07:14,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:14,682 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:14,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:15,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:15,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581019674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:15,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:15,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:07:15,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645912119] [2022-02-11 00:07:15,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:15,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:07:15,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:07:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:07:15,658 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) [2022-02-11 00:07:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:21,137 INFO L93 Difference]: Finished difference Result 859 states and 1714 transitions. [2022-02-11 00:07:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-11 00:07:21,138 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 [2022-02-11 00:07:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:21,139 INFO L225 Difference]: With dead ends: 859 [2022-02-11 00:07:21,139 INFO L226 Difference]: Without dead ends: 852 [2022-02-11 00:07:21,140 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8479 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3292, Invalid=22468, Unknown=0, NotChecked=0, Total=25760 [2022-02-11 00:07:21,140 INFO L934 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:21,140 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 792 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:07:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-02-11 00:07:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 372. [2022-02-11 00:07:21,145 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) [2022-02-11 00:07:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 842 transitions. [2022-02-11 00:07:21,146 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 842 transitions. Word has length 21 [2022-02-11 00:07:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:21,146 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 842 transitions. [2022-02-11 00:07:21,146 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) [2022-02-11 00:07:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 842 transitions. [2022-02-11 00:07:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:21,146 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:21,146 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:21,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:21,351 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 [2022-02-11 00:07:21,351 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash -949697370, now seen corresponding path program 94 times [2022-02-11 00:07:21,352 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:21,352 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541338209] [2022-02-11 00:07:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:21,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:21,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541338209] [2022-02-11 00:07:21,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541338209] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:21,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244035283] [2022-02-11 00:07:21,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:07:21,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:21,534 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) [2022-02-11 00:07:21,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-02-11 00:07:21,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:07:21,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:21,555 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:21,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:22,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:22,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244035283] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:22,517 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:22,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:07:22,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102486165] [2022-02-11 00:07:22,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:22,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:07:22,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:07:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1934, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:07:22,518 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) [2022-02-11 00:07:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:27,234 INFO L93 Difference]: Finished difference Result 892 states and 1792 transitions. [2022-02-11 00:07:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-11 00:07:27,234 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 [2022-02-11 00:07:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:27,235 INFO L225 Difference]: With dead ends: 892 [2022-02-11 00:07:27,235 INFO L226 Difference]: Without dead ends: 885 [2022-02-11 00:07:27,237 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7071 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3072, Invalid=18980, Unknown=0, NotChecked=0, Total=22052 [2022-02-11 00:07:27,237 INFO L934 BasicCegarLoop]: 49 mSDtfsCounter, 516 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:27,237 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 703 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:07:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-02-11 00:07:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 364. [2022-02-11 00:07:27,242 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) [2022-02-11 00:07:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 816 transitions. [2022-02-11 00:07:27,242 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 816 transitions. Word has length 21 [2022-02-11 00:07:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:27,242 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 816 transitions. [2022-02-11 00:07:27,242 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) [2022-02-11 00:07:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 816 transitions. [2022-02-11 00:07:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:27,243 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:27,243 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:27,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:27,443 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 [2022-02-11 00:07:27,444 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1117677524, now seen corresponding path program 95 times [2022-02-11 00:07:27,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:27,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49610593] [2022-02-11 00:07:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:27,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:27,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49610593] [2022-02-11 00:07:27,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49610593] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:27,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580512591] [2022-02-11 00:07:27,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:07:27,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:27,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:27,632 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) [2022-02-11 00:07:27,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-02-11 00:07:27,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:07:27,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:27,651 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:27,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:28,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:28,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580512591] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:28,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:28,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:07:28,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714171688] [2022-02-11 00:07:28,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:28,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:07:28,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:28,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:07:28,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:07:28,639 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) [2022-02-11 00:07:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:33,049 INFO L93 Difference]: Finished difference Result 768 states and 1535 transitions. [2022-02-11 00:07:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-11 00:07:33,049 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 [2022-02-11 00:07:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:33,050 INFO L225 Difference]: With dead ends: 768 [2022-02-11 00:07:33,050 INFO L226 Difference]: Without dead ends: 765 [2022-02-11 00:07:33,051 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5264 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2399, Invalid=15423, Unknown=0, NotChecked=0, Total=17822 [2022-02-11 00:07:33,051 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 508 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:33,051 INFO L935 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] [2022-02-11 00:07:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-02-11 00:07:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 365. [2022-02-11 00:07:33,056 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) [2022-02-11 00:07:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 818 transitions. [2022-02-11 00:07:33,056 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 818 transitions. Word has length 21 [2022-02-11 00:07:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:33,056 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 818 transitions. [2022-02-11 00:07:33,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:07:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 818 transitions. [2022-02-11 00:07:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:33,057 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:33,057 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:33,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:33,257 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 [2022-02-11 00:07:33,258 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:33,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:33,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1110354704, now seen corresponding path program 96 times [2022-02-11 00:07:33,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:33,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336793623] [2022-02-11 00:07:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:33,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:33,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336793623] [2022-02-11 00:07:33,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336793623] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:33,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764509168] [2022-02-11 00:07:33,454 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:07:33,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:33,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:33,455 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) [2022-02-11 00:07:33,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-02-11 00:07:33,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:07:33,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:33,477 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:33,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:33,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:34,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764509168] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:34,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:34,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:07:34,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236824010] [2022-02-11 00:07:34,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:34,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:07:34,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:07:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:07:34,435 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) [2022-02-11 00:07:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:37,882 INFO L93 Difference]: Finished difference Result 785 states and 1572 transitions. [2022-02-11 00:07:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-11 00:07:37,883 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 [2022-02-11 00:07:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:37,884 INFO L225 Difference]: With dead ends: 785 [2022-02-11 00:07:37,884 INFO L226 Difference]: Without dead ends: 778 [2022-02-11 00:07:37,885 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4339 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2114, Invalid=12892, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 00:07:37,885 INFO L934 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 [2022-02-11 00:07:37,885 INFO L935 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] [2022-02-11 00:07:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-02-11 00:07:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 370. [2022-02-11 00:07:37,890 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) [2022-02-11 00:07:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 834 transitions. [2022-02-11 00:07:37,890 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 834 transitions. Word has length 21 [2022-02-11 00:07:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:37,890 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 834 transitions. [2022-02-11 00:07:37,890 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) [2022-02-11 00:07:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 834 transitions. [2022-02-11 00:07:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:37,895 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:37,895 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:37,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-02-11 00:07:38,112 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 [2022-02-11 00:07:38,112 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1073323248, now seen corresponding path program 97 times [2022-02-11 00:07:38,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:38,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708998798] [2022-02-11 00:07:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:38,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:38,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708998798] [2022-02-11 00:07:38,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708998798] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:38,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790553811] [2022-02-11 00:07:38,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:07:38,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:38,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:38,299 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) [2022-02-11 00:07:38,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-02-11 00:07:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:38,320 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:38,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:38,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:39,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790553811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:39,270 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:39,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:07:39,270 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489291408] [2022-02-11 00:07:39,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:39,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:07:39,270 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:07:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:07:39,271 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) [2022-02-11 00:07:43,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:43,250 INFO L93 Difference]: Finished difference Result 816 states and 1646 transitions. [2022-02-11 00:07:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 00:07:43,251 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 [2022-02-11 00:07:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:43,252 INFO L225 Difference]: With dead ends: 816 [2022-02-11 00:07:43,252 INFO L226 Difference]: Without dead ends: 802 [2022-02-11 00:07:43,253 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5099 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2409, Invalid=14621, Unknown=0, NotChecked=0, Total=17030 [2022-02-11 00:07:43,253 INFO L934 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 [2022-02-11 00:07:43,254 INFO L935 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] [2022-02-11 00:07:43,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-02-11 00:07:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 366. [2022-02-11 00:07:43,258 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) [2022-02-11 00:07:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 820 transitions. [2022-02-11 00:07:43,259 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 820 transitions. Word has length 21 [2022-02-11 00:07:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:43,259 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 820 transitions. [2022-02-11 00:07:43,259 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) [2022-02-11 00:07:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 820 transitions. [2022-02-11 00:07:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:43,259 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:43,259 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:43,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:43,459 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 [2022-02-11 00:07:43,460 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:43,460 INFO L85 PathProgramCache]: Analyzing trace with hash 199727334, now seen corresponding path program 98 times [2022-02-11 00:07:43,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:43,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248889032] [2022-02-11 00:07:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:43,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:43,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:43,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248889032] [2022-02-11 00:07:43,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248889032] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:43,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166081243] [2022-02-11 00:07:43,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:07:43,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:43,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:43,660 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) [2022-02-11 00:07:43,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-02-11 00:07:43,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:07:43,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:43,683 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:43,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:44,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:44,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166081243] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:44,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:44,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:07:44,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908731146] [2022-02-11 00:07:44,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:44,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:07:44,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:07:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:07:44,686 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) [2022-02-11 00:07:49,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:49,475 INFO L93 Difference]: Finished difference Result 768 states and 1558 transitions. [2022-02-11 00:07:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-11 00:07:49,475 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 [2022-02-11 00:07:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:49,476 INFO L225 Difference]: With dead ends: 768 [2022-02-11 00:07:49,476 INFO L226 Difference]: Without dead ends: 765 [2022-02-11 00:07:49,477 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6865 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2843, Invalid=19209, Unknown=0, NotChecked=0, Total=22052 [2022-02-11 00:07:49,478 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 412 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:07:49,478 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 680 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:07:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-02-11 00:07:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 369. [2022-02-11 00:07:49,482 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) [2022-02-11 00:07:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 827 transitions. [2022-02-11 00:07:49,483 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 827 transitions. Word has length 21 [2022-02-11 00:07:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:49,483 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 827 transitions. [2022-02-11 00:07:49,483 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) [2022-02-11 00:07:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 827 transitions. [2022-02-11 00:07:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:49,483 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:49,483 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:49,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-02-11 00:07:49,684 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 [2022-02-11 00:07:49,684 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash 192404514, now seen corresponding path program 99 times [2022-02-11 00:07:49,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:49,685 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880915769] [2022-02-11 00:07:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:49,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:49,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:49,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880915769] [2022-02-11 00:07:49,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880915769] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:49,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903344723] [2022-02-11 00:07:49,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:07:49,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:49,866 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) [2022-02-11 00:07:49,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-02-11 00:07:49,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:07:49,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:49,887 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:49,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:50,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:50,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903344723] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:50,836 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:50,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:07:50,836 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31103983] [2022-02-11 00:07:50,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:50,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:07:50,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:07:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:07:50,837 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) [2022-02-11 00:07:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:54,845 INFO L93 Difference]: Finished difference Result 792 states and 1603 transitions. [2022-02-11 00:07:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-11 00:07:54,845 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 [2022-02-11 00:07:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:54,846 INFO L225 Difference]: With dead ends: 792 [2022-02-11 00:07:54,846 INFO L226 Difference]: Without dead ends: 785 [2022-02-11 00:07:54,847 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5847 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2625, Invalid=16281, Unknown=0, NotChecked=0, Total=18906 [2022-02-11 00:07:54,847 INFO L934 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 [2022-02-11 00:07:54,847 INFO L935 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] [2022-02-11 00:07:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-02-11 00:07:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 370. [2022-02-11 00:07:54,852 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) [2022-02-11 00:07:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 834 transitions. [2022-02-11 00:07:54,852 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 834 transitions. Word has length 21 [2022-02-11 00:07:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:54,852 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 834 transitions. [2022-02-11 00:07:54,852 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) [2022-02-11 00:07:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 834 transitions. [2022-02-11 00:07:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:54,853 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:54,853 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:54,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-02-11 00:07:55,053 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 [2022-02-11 00:07:55,053 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1991273438, now seen corresponding path program 100 times [2022-02-11 00:07:55,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:55,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873222272] [2022-02-11 00:07:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:55,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:55,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:55,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873222272] [2022-02-11 00:07:55,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873222272] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:55,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102386589] [2022-02-11 00:07:55,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:07:55,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:55,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:55,240 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) [2022-02-11 00:07:55,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-02-11 00:07:55,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:07:55,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:55,261 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:55,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:07:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:55,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:07:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:56,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102386589] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:07:56,228 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:07:56,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:07:56,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434868125] [2022-02-11 00:07:56,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:07:56,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:07:56,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:07:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:07:56,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1925, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:07:56,228 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) [2022-02-11 00:07:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:07:59,553 INFO L93 Difference]: Finished difference Result 803 states and 1623 transitions. [2022-02-11 00:07:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-11 00:07:59,554 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 [2022-02-11 00:07:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:07:59,555 INFO L225 Difference]: With dead ends: 803 [2022-02-11 00:07:59,555 INFO L226 Difference]: Without dead ends: 796 [2022-02-11 00:07:59,555 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4179 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2116, Invalid=12404, Unknown=0, NotChecked=0, Total=14520 [2022-02-11 00:07:59,556 INFO L934 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 [2022-02-11 00:07:59,556 INFO L935 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] [2022-02-11 00:07:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-02-11 00:07:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 360. [2022-02-11 00:07:59,560 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) [2022-02-11 00:07:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 808 transitions. [2022-02-11 00:07:59,561 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 808 transitions. Word has length 21 [2022-02-11 00:07:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:07:59,561 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 808 transitions. [2022-02-11 00:07:59,561 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) [2022-02-11 00:07:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 808 transitions. [2022-02-11 00:07:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:07:59,562 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:07:59,562 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:07:59,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-02-11 00:07:59,775 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 [2022-02-11 00:07:59,775 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:07:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:07:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1407810710, now seen corresponding path program 101 times [2022-02-11 00:07:59,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:07:59,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323122512] [2022-02-11 00:07:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:07:59,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:07:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:07:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:07:59,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:07:59,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323122512] [2022-02-11 00:07:59,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323122512] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:07:59,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198836782] [2022-02-11 00:07:59,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:07:59,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:07:59,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:07:59,963 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) [2022-02-11 00:07:59,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-02-11 00:07:59,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:07:59,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:07:59,987 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:07:59,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:00,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:01,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198836782] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:01,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:01,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:08:01,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016913596] [2022-02-11 00:08:01,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:01,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:08:01,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:08:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:08:01,014 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) [2022-02-11 00:08:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:03,510 INFO L93 Difference]: Finished difference Result 702 states and 1405 transitions. [2022-02-11 00:08:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 00:08:03,511 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 [2022-02-11 00:08:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:03,512 INFO L225 Difference]: With dead ends: 702 [2022-02-11 00:08:03,512 INFO L226 Difference]: Without dead ends: 699 [2022-02-11 00:08:03,513 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1382, Invalid=9330, Unknown=0, NotChecked=0, Total=10712 [2022-02-11 00:08:03,513 INFO L934 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 [2022-02-11 00:08:03,513 INFO L935 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] [2022-02-11 00:08:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-02-11 00:08:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 358. [2022-02-11 00:08:03,517 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) [2022-02-11 00:08:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 803 transitions. [2022-02-11 00:08:03,518 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 803 transitions. Word has length 21 [2022-02-11 00:08:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:03,518 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 803 transitions. [2022-02-11 00:08:03,518 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) [2022-02-11 00:08:03,518 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 803 transitions. [2022-02-11 00:08:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:03,518 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:03,519 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:03,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-02-11 00:08:03,719 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 [2022-02-11 00:08:03,719 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:03,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1158349670, now seen corresponding path program 102 times [2022-02-11 00:08:03,720 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:03,720 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269963812] [2022-02-11 00:08:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:03,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:03,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269963812] [2022-02-11 00:08:03,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269963812] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:03,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304945816] [2022-02-11 00:08:03,909 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:08:03,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:03,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:03,911 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) [2022-02-11 00:08:03,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-02-11 00:08:03,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-11 00:08:03,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:03,934 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:03,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:04,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:04,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304945816] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:04,929 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:04,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:08:04,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053338624] [2022-02-11 00:08:04,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:04,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:08:04,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:08:04,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2013, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:08:04,930 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) [2022-02-11 00:08:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:10,077 INFO L93 Difference]: Finished difference Result 826 states and 1654 transitions. [2022-02-11 00:08:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-11 00:08:10,077 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 [2022-02-11 00:08:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:10,078 INFO L225 Difference]: With dead ends: 826 [2022-02-11 00:08:10,078 INFO L226 Difference]: Without dead ends: 820 [2022-02-11 00:08:10,079 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7041 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3081, Invalid=19269, Unknown=0, NotChecked=0, Total=22350 [2022-02-11 00:08:10,080 INFO L934 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 [2022-02-11 00:08:10,080 INFO L935 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] [2022-02-11 00:08:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-02-11 00:08:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 363. [2022-02-11 00:08:10,085 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) [2022-02-11 00:08:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 815 transitions. [2022-02-11 00:08:10,085 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 815 transitions. Word has length 21 [2022-02-11 00:08:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:10,085 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 815 transitions. [2022-02-11 00:08:10,085 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) [2022-02-11 00:08:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 815 transitions. [2022-02-11 00:08:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:10,086 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:10,086 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:10,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-02-11 00:08:10,286 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 [2022-02-11 00:08:10,286 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:10,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1151026850, now seen corresponding path program 103 times [2022-02-11 00:08:10,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:10,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342698888] [2022-02-11 00:08:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:10,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:10,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:10,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342698888] [2022-02-11 00:08:10,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342698888] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:10,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723039714] [2022-02-11 00:08:10,464 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:08:10,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:10,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:10,465 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) [2022-02-11 00:08:10,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-02-11 00:08:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:10,485 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:10,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:10,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:11,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723039714] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:11,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:11,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:08:11,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91386306] [2022-02-11 00:08:11,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:11,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:08:11,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:08:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:11,452 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) [2022-02-11 00:08:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:15,943 INFO L93 Difference]: Finished difference Result 869 states and 1735 transitions. [2022-02-11 00:08:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-11 00:08:15,943 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 [2022-02-11 00:08:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:15,944 INFO L225 Difference]: With dead ends: 869 [2022-02-11 00:08:15,944 INFO L226 Difference]: Without dead ends: 855 [2022-02-11 00:08:15,945 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6800 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3026, Invalid=18436, Unknown=0, NotChecked=0, Total=21462 [2022-02-11 00:08:15,946 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 484 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:15,946 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 629 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:08:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-02-11 00:08:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 372. [2022-02-11 00:08:15,950 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) [2022-02-11 00:08:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 841 transitions. [2022-02-11 00:08:15,951 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 841 transitions. Word has length 21 [2022-02-11 00:08:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:15,951 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 841 transitions. [2022-02-11 00:08:15,951 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) [2022-02-11 00:08:15,951 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 841 transitions. [2022-02-11 00:08:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:15,952 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:15,952 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:15,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-02-11 00:08:16,152 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 [2022-02-11 00:08:16,152 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:16,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1032651102, now seen corresponding path program 104 times [2022-02-11 00:08:16,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:16,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561487413] [2022-02-11 00:08:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:16,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:16,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561487413] [2022-02-11 00:08:16,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561487413] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:16,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084055050] [2022-02-11 00:08:16,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:08:16,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:16,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:16,339 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) [2022-02-11 00:08:16,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-02-11 00:08:16,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:08:16,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:16,362 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:16,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:16,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:17,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084055050] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:17,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:17,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:08:17,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506951988] [2022-02-11 00:08:17,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:17,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:08:17,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:08:17,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:17,324 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) [2022-02-11 00:08:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:22,366 INFO L93 Difference]: Finished difference Result 887 states and 1768 transitions. [2022-02-11 00:08:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-11 00:08:22,367 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 [2022-02-11 00:08:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:22,368 INFO L225 Difference]: With dead ends: 887 [2022-02-11 00:08:22,368 INFO L226 Difference]: Without dead ends: 866 [2022-02-11 00:08:22,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8015 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3428, Invalid=21378, Unknown=0, NotChecked=0, Total=24806 [2022-02-11 00:08:22,369 INFO L934 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 [2022-02-11 00:08:22,369 INFO L935 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] [2022-02-11 00:08:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-02-11 00:08:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 368. [2022-02-11 00:08:22,373 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) [2022-02-11 00:08:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 827 transitions. [2022-02-11 00:08:22,374 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 827 transitions. Word has length 21 [2022-02-11 00:08:22,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:22,374 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 827 transitions. [2022-02-11 00:08:22,374 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) [2022-02-11 00:08:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 827 transitions. [2022-02-11 00:08:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:22,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:22,375 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:22,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-02-11 00:08:22,575 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 [2022-02-11 00:08:22,575 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:22,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1672621730, now seen corresponding path program 105 times [2022-02-11 00:08:22,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:22,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971650739] [2022-02-11 00:08:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:22,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:22,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971650739] [2022-02-11 00:08:22,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971650739] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:22,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588487506] [2022-02-11 00:08:22,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:08:22,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:22,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:22,756 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) [2022-02-11 00:08:22,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-02-11 00:08:22,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:08:22,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:22,774 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:22,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:23,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:23,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588487506] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:23,731 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:23,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:08:23,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970407030] [2022-02-11 00:08:23,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:23,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:08:23,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:08:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:23,731 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) [2022-02-11 00:08:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:26,947 INFO L93 Difference]: Finished difference Result 786 states and 1583 transitions. [2022-02-11 00:08:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-11 00:08:26,947 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 [2022-02-11 00:08:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:26,949 INFO L225 Difference]: With dead ends: 786 [2022-02-11 00:08:26,949 INFO L226 Difference]: Without dead ends: 772 [2022-02-11 00:08:26,950 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2250, Invalid=13752, Unknown=0, NotChecked=0, Total=16002 [2022-02-11 00:08:26,950 INFO L934 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 [2022-02-11 00:08:26,950 INFO L935 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] [2022-02-11 00:08:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-02-11 00:08:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 366. [2022-02-11 00:08:26,955 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) [2022-02-11 00:08:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 821 transitions. [2022-02-11 00:08:26,956 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 821 transitions. Word has length 21 [2022-02-11 00:08:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:26,956 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 821 transitions. [2022-02-11 00:08:26,956 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) [2022-02-11 00:08:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 821 transitions. [2022-02-11 00:08:26,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:26,957 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:26,957 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:26,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-02-11 00:08:27,157 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 [2022-02-11 00:08:27,157 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash -455217064, now seen corresponding path program 106 times [2022-02-11 00:08:27,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:27,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758955995] [2022-02-11 00:08:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:27,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:27,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758955995] [2022-02-11 00:08:27,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758955995] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:27,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511099277] [2022-02-11 00:08:27,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:08:27,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:27,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:27,340 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) [2022-02-11 00:08:27,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-02-11 00:08:27,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:08:27,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:27,359 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:27,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:27,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:28,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511099277] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:28,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:28,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:08:28,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225704350] [2022-02-11 00:08:28,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:28,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:08:28,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:08:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:08:28,329 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) [2022-02-11 00:08:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:32,753 INFO L93 Difference]: Finished difference Result 804 states and 1591 transitions. [2022-02-11 00:08:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-11 00:08:32,753 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 [2022-02-11 00:08:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:32,754 INFO L225 Difference]: With dead ends: 804 [2022-02-11 00:08:32,754 INFO L226 Difference]: Without dead ends: 798 [2022-02-11 00:08:32,755 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5804 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2683, Invalid=16499, Unknown=0, NotChecked=0, Total=19182 [2022-02-11 00:08:32,755 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 497 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:32,755 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 712 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:08:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-02-11 00:08:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 367. [2022-02-11 00:08:32,760 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) [2022-02-11 00:08:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 823 transitions. [2022-02-11 00:08:32,760 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 823 transitions. Word has length 21 [2022-02-11 00:08:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:32,760 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 823 transitions. [2022-02-11 00:08:32,760 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) [2022-02-11 00:08:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 823 transitions. [2022-02-11 00:08:32,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:32,761 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:32,761 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:32,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-02-11 00:08:32,961 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 [2022-02-11 00:08:32,961 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash -462539884, now seen corresponding path program 107 times [2022-02-11 00:08:32,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:32,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977331437] [2022-02-11 00:08:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:32,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:33,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:33,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977331437] [2022-02-11 00:08:33,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977331437] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:33,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874995197] [2022-02-11 00:08:33,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:08:33,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:33,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:33,140 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) [2022-02-11 00:08:33,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-02-11 00:08:33,158 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:08:33,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:33,159 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:33,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:34,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874995197] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:34,096 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:34,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:08:34,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199398264] [2022-02-11 00:08:34,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:34,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:08:34,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:34,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:08:34,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:34,096 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) [2022-02-11 00:08:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:37,424 INFO L93 Difference]: Finished difference Result 823 states and 1636 transitions. [2022-02-11 00:08:37,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-11 00:08:37,424 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 [2022-02-11 00:08:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:37,426 INFO L225 Difference]: With dead ends: 823 [2022-02-11 00:08:37,426 INFO L226 Difference]: Without dead ends: 809 [2022-02-11 00:08:37,426 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4733 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2364, Invalid=13638, Unknown=0, NotChecked=0, Total=16002 [2022-02-11 00:08:37,427 INFO L934 BasicCegarLoop]: 48 mSDtfsCounter, 475 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:37,427 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 667 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:08:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-02-11 00:08:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 372. [2022-02-11 00:08:37,432 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) [2022-02-11 00:08:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 839 transitions. [2022-02-11 00:08:37,432 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 839 transitions. Word has length 21 [2022-02-11 00:08:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:37,432 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 839 transitions. [2022-02-11 00:08:37,432 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) [2022-02-11 00:08:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 839 transitions. [2022-02-11 00:08:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:37,433 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:37,433 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:37,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-02-11 00:08:37,633 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 [2022-02-11 00:08:37,633 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1648749460, now seen corresponding path program 108 times [2022-02-11 00:08:37,634 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:37,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427044261] [2022-02-11 00:08:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:37,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:37,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:37,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427044261] [2022-02-11 00:08:37,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427044261] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:37,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110236349] [2022-02-11 00:08:37,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:08:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:37,811 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) [2022-02-11 00:08:37,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-02-11 00:08:37,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:08:37,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:37,830 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:37,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:38,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:38,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110236349] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:38,755 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:38,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:08:38,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611004049] [2022-02-11 00:08:38,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:38,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:08:38,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:38,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:08:38,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:38,756 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) [2022-02-11 00:08:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:42,807 INFO L93 Difference]: Finished difference Result 856 states and 1717 transitions. [2022-02-11 00:08:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-11 00:08:42,808 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 [2022-02-11 00:08:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:42,809 INFO L225 Difference]: With dead ends: 856 [2022-02-11 00:08:42,809 INFO L226 Difference]: Without dead ends: 835 [2022-02-11 00:08:42,810 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5837 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2808, Invalid=16374, Unknown=0, NotChecked=0, Total=19182 [2022-02-11 00:08:42,810 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 473 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:08:42,810 INFO L935 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] [2022-02-11 00:08:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-02-11 00:08:42,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 370. [2022-02-11 00:08:42,814 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) [2022-02-11 00:08:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 829 transitions. [2022-02-11 00:08:42,815 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 829 transitions. Word has length 21 [2022-02-11 00:08:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:42,815 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 829 transitions. [2022-02-11 00:08:42,815 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) [2022-02-11 00:08:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 829 transitions. [2022-02-11 00:08:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:42,815 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:42,816 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:42,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-02-11 00:08:43,016 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 [2022-02-11 00:08:43,016 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:43,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:43,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1373167254, now seen corresponding path program 109 times [2022-02-11 00:08:43,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:43,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568547314] [2022-02-11 00:08:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:43,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:43,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:43,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568547314] [2022-02-11 00:08:43,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568547314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:43,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46272162] [2022-02-11 00:08:43,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:08:43,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:43,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:43,210 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) [2022-02-11 00:08:43,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-02-11 00:08:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:43,232 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:43,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:43,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:44,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46272162] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:44,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:44,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:08:44,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093123463] [2022-02-11 00:08:44,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:44,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:08:44,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:08:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2005, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:08:44,279 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) [2022-02-11 00:08:49,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:49,934 INFO L93 Difference]: Finished difference Result 810 states and 1630 transitions. [2022-02-11 00:08:49,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-11 00:08:49,934 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 [2022-02-11 00:08:49,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:49,935 INFO L225 Difference]: With dead ends: 810 [2022-02-11 00:08:49,935 INFO L226 Difference]: Without dead ends: 804 [2022-02-11 00:08:49,937 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7481 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3173, Invalid=20389, Unknown=0, NotChecked=0, Total=23562 [2022-02-11 00:08:49,937 INFO L934 BasicCegarLoop]: 45 mSDtfsCounter, 420 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2022-02-11 00:08:49,937 INFO L935 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] [2022-02-11 00:08:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-02-11 00:08:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 374. [2022-02-11 00:08:49,942 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) [2022-02-11 00:08:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 839 transitions. [2022-02-11 00:08:49,942 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 839 transitions. Word has length 21 [2022-02-11 00:08:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:49,942 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 839 transitions. [2022-02-11 00:08:49,942 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) [2022-02-11 00:08:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 839 transitions. [2022-02-11 00:08:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:49,943 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:49,943 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:49,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-02-11 00:08:50,143 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 [2022-02-11 00:08:50,143 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1380490074, now seen corresponding path program 110 times [2022-02-11 00:08:50,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:50,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742719141] [2022-02-11 00:08:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:50,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:50,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:50,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742719141] [2022-02-11 00:08:50,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742719141] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:50,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988899330] [2022-02-11 00:08:50,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:08:50,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:50,347 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) [2022-02-11 00:08:50,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-02-11 00:08:50,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:08:50,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:50,370 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:50,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:50,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:51,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988899330] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:51,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:51,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:08:51,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733035476] [2022-02-11 00:08:51,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:51,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:08:51,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:08:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:51,394 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) [2022-02-11 00:08:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:08:55,859 INFO L93 Difference]: Finished difference Result 850 states and 1707 transitions. [2022-02-11 00:08:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-11 00:08:55,859 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 [2022-02-11 00:08:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:08:55,860 INFO L225 Difference]: With dead ends: 850 [2022-02-11 00:08:55,860 INFO L226 Difference]: Without dead ends: 836 [2022-02-11 00:08:55,861 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6389 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2947, Invalid=17359, Unknown=0, NotChecked=0, Total=20306 [2022-02-11 00:08:55,861 INFO L934 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 [2022-02-11 00:08:55,861 INFO L935 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] [2022-02-11 00:08:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-02-11 00:08:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 376. [2022-02-11 00:08:55,866 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) [2022-02-11 00:08:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 849 transitions. [2022-02-11 00:08:55,867 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 849 transitions. Word has length 21 [2022-02-11 00:08:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:08:55,867 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 849 transitions. [2022-02-11 00:08:55,867 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) [2022-02-11 00:08:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 849 transitions. [2022-02-11 00:08:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:08:55,868 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:08:55,868 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:08:55,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-02-11 00:08:56,068 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 [2022-02-11 00:08:56,068 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:08:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:08:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 730799270, now seen corresponding path program 111 times [2022-02-11 00:08:56,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:08:56,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382224017] [2022-02-11 00:08:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:08:56,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:08:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:08:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:56,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:08:56,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382224017] [2022-02-11 00:08:56,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382224017] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:08:56,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799314077] [2022-02-11 00:08:56,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:08:56,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:08:56,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:08:56,273 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) [2022-02-11 00:08:56,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-02-11 00:08:56,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:08:56,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:08:56,296 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:08:56,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:08:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:56,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:08:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:08:57,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799314077] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:08:57,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:08:57,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:08:57,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892160718] [2022-02-11 00:08:57,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:08:57,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:08:57,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:08:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:08:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1904, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:08:57,309 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) [2022-02-11 00:09:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:01,000 INFO L93 Difference]: Finished difference Result 843 states and 1698 transitions. [2022-02-11 00:09:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-11 00:09:01,000 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 [2022-02-11 00:09:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:01,001 INFO L225 Difference]: With dead ends: 843 [2022-02-11 00:09:01,001 INFO L226 Difference]: Without dead ends: 829 [2022-02-11 00:09:01,003 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5089 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2577, Invalid=14453, Unknown=0, NotChecked=0, Total=17030 [2022-02-11 00:09:01,003 INFO L934 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 [2022-02-11 00:09:01,003 INFO L935 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] [2022-02-11 00:09:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-02-11 00:09:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 354. [2022-02-11 00:09:01,008 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) [2022-02-11 00:09:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 795 transitions. [2022-02-11 00:09:01,009 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 795 transitions. Word has length 21 [2022-02-11 00:09:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:01,009 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 795 transitions. [2022-02-11 00:09:01,009 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) [2022-02-11 00:09:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 795 transitions. [2022-02-11 00:09:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:01,010 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:01,010 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:01,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-02-11 00:09:01,210 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 [2022-02-11 00:09:01,210 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:01,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:01,210 INFO L85 PathProgramCache]: Analyzing trace with hash -70243496, now seen corresponding path program 112 times [2022-02-11 00:09:01,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:01,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155193647] [2022-02-11 00:09:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:01,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:01,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155193647] [2022-02-11 00:09:01,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155193647] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:01,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805815674] [2022-02-11 00:09:01,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:09:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:01,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:01,417 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) [2022-02-11 00:09:01,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-02-11 00:09:01,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:09:01,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:01,439 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:01,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:02,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805815674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:02,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:02,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:09:02,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887146950] [2022-02-11 00:09:02,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:02,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:09:02,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:09:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:09:02,498 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) [2022-02-11 00:09:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:05,299 INFO L93 Difference]: Finished difference Result 709 states and 1418 transitions. [2022-02-11 00:09:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-11 00:09:05,299 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 [2022-02-11 00:09:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:05,300 INFO L225 Difference]: With dead ends: 709 [2022-02-11 00:09:05,300 INFO L226 Difference]: Without dead ends: 706 [2022-02-11 00:09:05,301 INFO L933 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 [2022-02-11 00:09:05,301 INFO L934 BasicCegarLoop]: 39 mSDtfsCounter, 319 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-02-11 00:09:05,301 INFO L935 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] [2022-02-11 00:09:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-02-11 00:09:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 352. [2022-02-11 00:09:05,306 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) [2022-02-11 00:09:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 791 transitions. [2022-02-11 00:09:05,306 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 791 transitions. Word has length 21 [2022-02-11 00:09:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:05,306 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 791 transitions. [2022-02-11 00:09:05,306 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) [2022-02-11 00:09:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 791 transitions. [2022-02-11 00:09:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:05,307 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:05,307 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:05,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:05,517 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 [2022-02-11 00:09:05,518 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:05,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:05,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1182207148, now seen corresponding path program 113 times [2022-02-11 00:09:05,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:05,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692429261] [2022-02-11 00:09:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:05,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:05,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692429261] [2022-02-11 00:09:05,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692429261] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:05,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652946274] [2022-02-11 00:09:05,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:09:05,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:05,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:05,719 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) [2022-02-11 00:09:05,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-02-11 00:09:05,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:09:05,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:05,739 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:05,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:06,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:06,808 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652946274] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:06,808 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:06,808 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:09:06,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559050477] [2022-02-11 00:09:06,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:06,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:09:06,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:06,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:09:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:09:06,809 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) [2022-02-11 00:09:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:12,474 INFO L93 Difference]: Finished difference Result 796 states and 1607 transitions. [2022-02-11 00:09:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-11 00:09:12,474 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 [2022-02-11 00:09:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:12,475 INFO L225 Difference]: With dead ends: 796 [2022-02-11 00:09:12,475 INFO L226 Difference]: Without dead ends: 793 [2022-02-11 00:09:12,476 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7438 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3025, Invalid=20231, Unknown=0, NotChecked=0, Total=23256 [2022-02-11 00:09:12,476 INFO L934 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, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:12,476 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 720 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 00:09:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-02-11 00:09:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 355. [2022-02-11 00:09:12,481 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) [2022-02-11 00:09:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 798 transitions. [2022-02-11 00:09:12,481 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 798 transitions. Word has length 21 [2022-02-11 00:09:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:12,482 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 798 transitions. [2022-02-11 00:09:12,482 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) [2022-02-11 00:09:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 798 transitions. [2022-02-11 00:09:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:12,482 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:12,482 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:12,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:12,682 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 [2022-02-11 00:09:12,683 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1189529968, now seen corresponding path program 114 times [2022-02-11 00:09:12,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:12,683 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015781039] [2022-02-11 00:09:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:12,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:12,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:12,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015781039] [2022-02-11 00:09:12,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015781039] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:12,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621793846] [2022-02-11 00:09:12,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:09:12,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:12,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:12,879 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) [2022-02-11 00:09:12,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-02-11 00:09:12,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:09:12,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:12,901 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:12,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:13,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:13,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621793846] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:13,914 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:13,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:09:13,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956287787] [2022-02-11 00:09:13,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:13,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:09:13,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:09:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1914, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:09:13,915 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) [2022-02-11 00:09:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:18,849 INFO L93 Difference]: Finished difference Result 837 states and 1676 transitions. [2022-02-11 00:09:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-11 00:09:18,849 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 [2022-02-11 00:09:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:18,851 INFO L225 Difference]: With dead ends: 837 [2022-02-11 00:09:18,851 INFO L226 Difference]: Without dead ends: 830 [2022-02-11 00:09:18,852 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6892 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2931, Invalid=18531, Unknown=0, NotChecked=0, Total=21462 [2022-02-11 00:09:18,852 INFO L934 BasicCegarLoop]: 47 mSDtfsCounter, 495 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-02-11 00:09:18,852 INFO L935 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] [2022-02-11 00:09:18,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-02-11 00:09:18,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 356. [2022-02-11 00:09:18,872 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) [2022-02-11 00:09:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 805 transitions. [2022-02-11 00:09:18,873 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 805 transitions. Word has length 21 [2022-02-11 00:09:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:18,873 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 805 transitions. [2022-02-11 00:09:18,873 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) [2022-02-11 00:09:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 805 transitions. [2022-02-11 00:09:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:18,874 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:18,874 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:18,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:19,087 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 [2022-02-11 00:09:19,088 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash 921759376, now seen corresponding path program 115 times [2022-02-11 00:09:19,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:19,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739722221] [2022-02-11 00:09:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:19,282 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:19,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739722221] [2022-02-11 00:09:19,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739722221] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:19,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744775886] [2022-02-11 00:09:19,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:09:19,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:19,283 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) [2022-02-11 00:09:19,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-02-11 00:09:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:19,306 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:19,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:19,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:20,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744775886] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:20,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:20,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:09:20,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689777558] [2022-02-11 00:09:20,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:20,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:09:20,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:20,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:09:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:09:20,327 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) [2022-02-11 00:09:24,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:24,849 INFO L93 Difference]: Finished difference Result 861 states and 1734 transitions. [2022-02-11 00:09:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-11 00:09:24,849 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 [2022-02-11 00:09:24,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:24,851 INFO L225 Difference]: With dead ends: 861 [2022-02-11 00:09:24,851 INFO L226 Difference]: Without dead ends: 854 [2022-02-11 00:09:24,852 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6461 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2922, Invalid=17384, Unknown=0, NotChecked=0, Total=20306 [2022-02-11 00:09:24,852 INFO L934 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, 1.0s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:24,852 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 681 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-11 00:09:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-02-11 00:09:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 350. [2022-02-11 00:09:24,857 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) [2022-02-11 00:09:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 785 transitions. [2022-02-11 00:09:24,858 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 785 transitions. Word has length 21 [2022-02-11 00:09:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:24,858 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 785 transitions. [2022-02-11 00:09:24,858 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) [2022-02-11 00:09:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 785 transitions. [2022-02-11 00:09:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:24,859 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:24,859 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:24,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:25,059 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 [2022-02-11 00:09:25,059 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:25,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash -799486760, now seen corresponding path program 116 times [2022-02-11 00:09:25,060 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:25,060 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990812928] [2022-02-11 00:09:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:25,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:25,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990812928] [2022-02-11 00:09:25,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990812928] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:25,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541089928] [2022-02-11 00:09:25,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:09:25,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:25,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:25,261 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) [2022-02-11 00:09:25,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-02-11 00:09:25,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:09:25,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:25,283 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:25,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:25,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:26,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541089928] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:26,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:26,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:09:26,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730017423] [2022-02-11 00:09:26,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:09:26,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:26,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:09:26,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1999, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:09:26,320 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) [2022-02-11 00:09:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:30,129 INFO L93 Difference]: Finished difference Result 755 states and 1517 transitions. [2022-02-11 00:09:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-11 00:09:30,130 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 [2022-02-11 00:09:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:30,131 INFO L225 Difference]: With dead ends: 755 [2022-02-11 00:09:30,131 INFO L226 Difference]: Without dead ends: 752 [2022-02-11 00:09:30,132 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4351 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2105, Invalid=12901, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 00:09:30,132 INFO L934 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 [2022-02-11 00:09:30,132 INFO L935 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] [2022-02-11 00:09:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-02-11 00:09:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 351. [2022-02-11 00:09:30,136 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) [2022-02-11 00:09:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 787 transitions. [2022-02-11 00:09:30,136 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 787 transitions. Word has length 21 [2022-02-11 00:09:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:30,137 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 787 transitions. [2022-02-11 00:09:30,137 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) [2022-02-11 00:09:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 787 transitions. [2022-02-11 00:09:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:30,137 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:30,137 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:30,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-02-11 00:09:30,337 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 [2022-02-11 00:09:30,338 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:30,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:30,338 INFO L85 PathProgramCache]: Analyzing trace with hash -806809580, now seen corresponding path program 117 times [2022-02-11 00:09:30,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:30,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381032709] [2022-02-11 00:09:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:30,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:30,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:30,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381032709] [2022-02-11 00:09:30,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381032709] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:30,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686274824] [2022-02-11 00:09:30,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:09:30,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:30,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:30,527 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) [2022-02-11 00:09:30,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-02-11 00:09:30,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:09:30,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:30,547 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:30,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:30,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:31,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686274824] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:31,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:31,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:09:31,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442485999] [2022-02-11 00:09:31,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:31,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:09:31,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:09:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1904, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:09:31,488 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) [2022-02-11 00:09:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:34,175 INFO L93 Difference]: Finished difference Result 773 states and 1553 transitions. [2022-02-11 00:09:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-11 00:09:34,176 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 [2022-02-11 00:09:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:34,177 INFO L225 Difference]: With dead ends: 773 [2022-02-11 00:09:34,177 INFO L226 Difference]: Without dead ends: 766 [2022-02-11 00:09:34,178 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3735 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1899, Invalid=11211, Unknown=0, NotChecked=0, Total=13110 [2022-02-11 00:09:34,178 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 444 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:34,178 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 560 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:09:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-02-11 00:09:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 356. [2022-02-11 00:09:34,183 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) [2022-02-11 00:09:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 803 transitions. [2022-02-11 00:09:34,184 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 803 transitions. Word has length 21 [2022-02-11 00:09:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:34,184 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 803 transitions. [2022-02-11 00:09:34,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:09:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 803 transitions. [2022-02-11 00:09:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:34,184 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:34,184 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:34,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-02-11 00:09:34,385 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 [2022-02-11 00:09:34,385 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1304479764, now seen corresponding path program 118 times [2022-02-11 00:09:34,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:34,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256093011] [2022-02-11 00:09:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:34,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:34,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:34,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256093011] [2022-02-11 00:09:34,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256093011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:34,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040185095] [2022-02-11 00:09:34,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:09:34,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:34,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:34,593 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) [2022-02-11 00:09:34,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-02-11 00:09:34,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:09:34,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:34,613 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:34,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:35,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:35,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040185095] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:35,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:35,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:09:35,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378474278] [2022-02-11 00:09:35,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:35,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:09:35,611 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:09:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:09:35,612 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) [2022-02-11 00:09:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:39,028 INFO L93 Difference]: Finished difference Result 813 states and 1643 transitions. [2022-02-11 00:09:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-11 00:09:39,028 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 [2022-02-11 00:09:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:39,029 INFO L225 Difference]: With dead ends: 813 [2022-02-11 00:09:39,029 INFO L226 Difference]: Without dead ends: 806 [2022-02-11 00:09:39,030 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5004 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2415, Invalid=14097, Unknown=0, NotChecked=0, Total=16512 [2022-02-11 00:09:39,030 INFO L934 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 [2022-02-11 00:09:39,030 INFO L935 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] [2022-02-11 00:09:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-02-11 00:09:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 352. [2022-02-11 00:09:39,035 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) [2022-02-11 00:09:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 789 transitions. [2022-02-11 00:09:39,035 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 789 transitions. Word has length 21 [2022-02-11 00:09:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:39,035 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 789 transitions. [2022-02-11 00:09:39,035 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) [2022-02-11 00:09:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 789 transitions. [2022-02-11 00:09:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:39,036 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:39,036 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:39,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-02-11 00:09:39,236 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 [2022-02-11 00:09:39,236 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1717436950, now seen corresponding path program 119 times [2022-02-11 00:09:39,237 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:39,237 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641017531] [2022-02-11 00:09:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:39,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:39,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641017531] [2022-02-11 00:09:39,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641017531] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:39,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464661739] [2022-02-11 00:09:39,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:09:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:39,418 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) [2022-02-11 00:09:39,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-02-11 00:09:39,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-11 00:09:39,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:39,437 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:39,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:39,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:40,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464661739] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:40,417 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:40,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:09:40,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905150309] [2022-02-11 00:09:40,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:40,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:09:40,418 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:09:40,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2002, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:09:40,418 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) [2022-02-11 00:09:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:44,634 INFO L93 Difference]: Finished difference Result 763 states and 1547 transitions. [2022-02-11 00:09:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-11 00:09:44,635 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 [2022-02-11 00:09:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:44,636 INFO L225 Difference]: With dead ends: 763 [2022-02-11 00:09:44,636 INFO L226 Difference]: Without dead ends: 760 [2022-02-11 00:09:44,637 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5946 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2629, Invalid=16831, Unknown=0, NotChecked=0, Total=19460 [2022-02-11 00:09:44,637 INFO L934 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 [2022-02-11 00:09:44,637 INFO L935 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] [2022-02-11 00:09:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-02-11 00:09:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 355. [2022-02-11 00:09:44,642 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) [2022-02-11 00:09:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 796 transitions. [2022-02-11 00:09:44,642 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 796 transitions. Word has length 21 [2022-02-11 00:09:44,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:44,642 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 796 transitions. [2022-02-11 00:09:44,642 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) [2022-02-11 00:09:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 796 transitions. [2022-02-11 00:09:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:44,643 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:44,643 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:44,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-02-11 00:09:44,843 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 [2022-02-11 00:09:44,843 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1724759770, now seen corresponding path program 120 times [2022-02-11 00:09:44,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:44,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883978642] [2022-02-11 00:09:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:44,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:45,026 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:45,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883978642] [2022-02-11 00:09:45,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883978642] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:45,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462067696] [2022-02-11 00:09:45,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:09:45,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:45,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:45,027 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) [2022-02-11 00:09:45,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-02-11 00:09:45,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:09:45,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:45,047 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:45,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:45,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:45,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462067696] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:45,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:45,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:09:45,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511429493] [2022-02-11 00:09:45,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:45,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:09:45,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:09:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:09:45,962 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) [2022-02-11 00:09:49,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:49,130 INFO L93 Difference]: Finished difference Result 787 states and 1590 transitions. [2022-02-11 00:09:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-11 00:09:49,130 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 [2022-02-11 00:09:49,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:49,131 INFO L225 Difference]: With dead ends: 787 [2022-02-11 00:09:49,131 INFO L226 Difference]: Without dead ends: 780 [2022-02-11 00:09:49,132 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5012 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2369, Invalid=14143, Unknown=0, NotChecked=0, Total=16512 [2022-02-11 00:09:49,132 INFO L934 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 [2022-02-11 00:09:49,133 INFO L935 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] [2022-02-11 00:09:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-02-11 00:09:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 356. [2022-02-11 00:09:49,137 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) [2022-02-11 00:09:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 803 transitions. [2022-02-11 00:09:49,137 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 803 transitions. Word has length 21 [2022-02-11 00:09:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:49,138 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 803 transitions. [2022-02-11 00:09:49,138 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) [2022-02-11 00:09:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 803 transitions. [2022-02-11 00:09:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:49,138 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:49,138 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:49,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-02-11 00:09:49,338 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 [2022-02-11 00:09:49,339 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:49,339 INFO L85 PathProgramCache]: Analyzing trace with hash 386529574, now seen corresponding path program 121 times [2022-02-11 00:09:49,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:49,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141953346] [2022-02-11 00:09:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:49,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:49,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:49,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141953346] [2022-02-11 00:09:49,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141953346] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:49,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469193676] [2022-02-11 00:09:49,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:09:49,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:49,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:49,517 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) [2022-02-11 00:09:49,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-02-11 00:09:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:49,536 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:49,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:49,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:50,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469193676] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:50,460 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:50,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:09:50,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257956992] [2022-02-11 00:09:50,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:50,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:09:50,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:50,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:09:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:09:50,461 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) [2022-02-11 00:09:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:53,434 INFO L93 Difference]: Finished difference Result 796 states and 1606 transitions. [2022-02-11 00:09:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-11 00:09:53,435 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 [2022-02-11 00:09:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:53,436 INFO L225 Difference]: With dead ends: 796 [2022-02-11 00:09:53,436 INFO L226 Difference]: Without dead ends: 789 [2022-02-11 00:09:53,436 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4153 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2179, Invalid=12101, Unknown=0, NotChecked=0, Total=14280 [2022-02-11 00:09:53,437 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 384 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:53,437 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 570 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:09:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-02-11 00:09:53,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 348. [2022-02-11 00:09:53,441 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) [2022-02-11 00:09:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 781 transitions. [2022-02-11 00:09:53,441 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 781 transitions. Word has length 21 [2022-02-11 00:09:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:53,441 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 781 transitions. [2022-02-11 00:09:53,441 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) [2022-02-11 00:09:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 781 transitions. [2022-02-11 00:09:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:53,442 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:53,442 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:53,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2022-02-11 00:09:53,642 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 [2022-02-11 00:09:53,642 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1799050412, now seen corresponding path program 122 times [2022-02-11 00:09:53,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:53,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909275284] [2022-02-11 00:09:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:53,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:53,818 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:53,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909275284] [2022-02-11 00:09:53,818 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909275284] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:53,818 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613881159] [2022-02-11 00:09:53,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:09:53,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:53,819 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) [2022-02-11 00:09:53,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-02-11 00:09:53,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:09:53,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:53,839 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:53,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:09:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:54,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:09:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:54,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613881159] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:09:54,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:09:54,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:09:54,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870997129] [2022-02-11 00:09:54,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:09:54,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:09:54,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:09:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:09:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:09:54,791 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) [2022-02-11 00:09:59,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:09:59,230 INFO L93 Difference]: Finished difference Result 812 states and 1640 transitions. [2022-02-11 00:09:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-11 00:09:59,230 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 [2022-02-11 00:09:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:09:59,231 INFO L225 Difference]: With dead ends: 812 [2022-02-11 00:09:59,231 INFO L226 Difference]: Without dead ends: 806 [2022-02-11 00:09:59,232 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6225 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2857, Invalid=17165, Unknown=0, NotChecked=0, Total=20022 [2022-02-11 00:09:59,233 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 443 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:09:59,233 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 604 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:09:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-02-11 00:09:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 353. [2022-02-11 00:09:59,237 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) [2022-02-11 00:09:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 793 transitions. [2022-02-11 00:09:59,237 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 793 transitions. Word has length 21 [2022-02-11 00:09:59,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:09:59,238 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 793 transitions. [2022-02-11 00:09:59,238 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) [2022-02-11 00:09:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 793 transitions. [2022-02-11 00:09:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:09:59,238 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:09:59,238 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:09:59,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-02-11 00:09:59,438 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 [2022-02-11 00:09:59,439 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:09:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:09:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1806373232, now seen corresponding path program 123 times [2022-02-11 00:09:59,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:09:59,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135581660] [2022-02-11 00:09:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:09:59,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:09:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:09:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:09:59,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:09:59,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135581660] [2022-02-11 00:09:59,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135581660] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:09:59,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833098971] [2022-02-11 00:09:59,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:09:59,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:09:59,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:09:59,617 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) [2022-02-11 00:09:59,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-02-11 00:09:59,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:09:59,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:09:59,635 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:09:59,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:00,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:00,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833098971] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:00,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:00,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:00,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862372032] [2022-02-11 00:10:00,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:00,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:00,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1912, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:00,561 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) [2022-02-11 00:10:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:04,696 INFO L93 Difference]: Finished difference Result 863 states and 1737 transitions. [2022-02-11 00:10:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-11 00:10:04,696 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 [2022-02-11 00:10:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:04,697 INFO L225 Difference]: With dead ends: 863 [2022-02-11 00:10:04,697 INFO L226 Difference]: Without dead ends: 849 [2022-02-11 00:10:04,699 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6302 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2858, Invalid=17164, Unknown=0, NotChecked=0, Total=20022 [2022-02-11 00:10:04,699 INFO L934 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 [2022-02-11 00:10:04,699 INFO L935 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] [2022-02-11 00:10:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-02-11 00:10:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 362. [2022-02-11 00:10:04,704 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) [2022-02-11 00:10:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 819 transitions. [2022-02-11 00:10:04,704 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 819 transitions. Word has length 21 [2022-02-11 00:10:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:04,705 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 819 transitions. [2022-02-11 00:10:04,705 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) [2022-02-11 00:10:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 819 transitions. [2022-02-11 00:10:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:04,705 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:04,705 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:04,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-02-11 00:10:04,915 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 [2022-02-11 00:10:04,915 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 304916112, now seen corresponding path program 124 times [2022-02-11 00:10:04,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:04,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998340742] [2022-02-11 00:10:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:05,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:05,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998340742] [2022-02-11 00:10:05,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998340742] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:05,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762383128] [2022-02-11 00:10:05,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:10:05,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:05,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:05,096 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) [2022-02-11 00:10:05,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-02-11 00:10:05,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:10:05,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:05,115 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:05,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:05,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:06,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762383128] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:06,057 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:06,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:06,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107990001] [2022-02-11 00:10:06,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:06,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:06,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:06,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:06,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:06,058 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) [2022-02-11 00:10:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:10,843 INFO L93 Difference]: Finished difference Result 898 states and 1794 transitions. [2022-02-11 00:10:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-02-11 00:10:10,843 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 [2022-02-11 00:10:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:10,844 INFO L225 Difference]: With dead ends: 898 [2022-02-11 00:10:10,844 INFO L226 Difference]: Without dead ends: 884 [2022-02-11 00:10:10,845 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7630 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3295, Invalid=20267, Unknown=0, NotChecked=0, Total=23562 [2022-02-11 00:10:10,845 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 459 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:10,845 INFO L935 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] [2022-02-11 00:10:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-02-11 00:10:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 358. [2022-02-11 00:10:10,850 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) [2022-02-11 00:10:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 805 transitions. [2022-02-11 00:10:10,851 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 805 transitions. Word has length 21 [2022-02-11 00:10:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:10,851 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 805 transitions. [2022-02-11 00:10:10,851 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) [2022-02-11 00:10:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 805 transitions. [2022-02-11 00:10:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:10,852 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:10,852 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:10,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-02-11 00:10:11,052 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 [2022-02-11 00:10:11,052 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1284778352, now seen corresponding path program 125 times [2022-02-11 00:10:11,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:11,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76542098] [2022-02-11 00:10:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:11,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:11,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:11,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76542098] [2022-02-11 00:10:11,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76542098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:11,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202193671] [2022-02-11 00:10:11,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:10:11,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:11,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:11,229 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) [2022-02-11 00:10:11,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-02-11 00:10:11,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:11,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:11,249 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:11,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:11,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:12,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202193671] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:12,197 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:12,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:12,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246687557] [2022-02-11 00:10:12,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:12,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:12,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:12,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:12,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:12,198 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) [2022-02-11 00:10:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:15,366 INFO L93 Difference]: Finished difference Result 792 states and 1593 transitions. [2022-02-11 00:10:15,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-11 00:10:15,367 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 [2022-02-11 00:10:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:15,368 INFO L225 Difference]: With dead ends: 792 [2022-02-11 00:10:15,368 INFO L226 Difference]: Without dead ends: 778 [2022-02-11 00:10:15,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2233, Invalid=13517, Unknown=0, NotChecked=0, Total=15750 [2022-02-11 00:10:15,368 INFO L934 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 [2022-02-11 00:10:15,369 INFO L935 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] [2022-02-11 00:10:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-02-11 00:10:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 356. [2022-02-11 00:10:15,373 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) [2022-02-11 00:10:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 799 transitions. [2022-02-11 00:10:15,373 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 799 transitions. Word has length 21 [2022-02-11 00:10:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:15,373 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 799 transitions. [2022-02-11 00:10:15,373 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) [2022-02-11 00:10:15,373 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 799 transitions. [2022-02-11 00:10:15,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:15,374 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:15,374 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:15,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-02-11 00:10:15,574 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 [2022-02-11 00:10:15,574 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:15,575 INFO L85 PathProgramCache]: Analyzing trace with hash 882350150, now seen corresponding path program 126 times [2022-02-11 00:10:15,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:15,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256031519] [2022-02-11 00:10:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:15,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:15,753 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:15,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256031519] [2022-02-11 00:10:15,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256031519] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:15,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056040414] [2022-02-11 00:10:15,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:10:15,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:15,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:15,754 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) [2022-02-11 00:10:15,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-02-11 00:10:15,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:10:15,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:15,773 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:15,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:16,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:16,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056040414] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:16,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:16,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:10:16,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53216288] [2022-02-11 00:10:16,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:10:16,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:10:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=2001, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:10:16,747 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) [2022-02-11 00:10:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:20,269 INFO L93 Difference]: Finished difference Result 757 states and 1523 transitions. [2022-02-11 00:10:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-11 00:10:20,270 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 [2022-02-11 00:10:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:20,271 INFO L225 Difference]: With dead ends: 757 [2022-02-11 00:10:20,271 INFO L226 Difference]: Without dead ends: 754 [2022-02-11 00:10:20,272 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4319 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2142, Invalid=12864, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 00:10:20,272 INFO L934 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 [2022-02-11 00:10:20,272 INFO L935 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] [2022-02-11 00:10:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-02-11 00:10:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 357. [2022-02-11 00:10:20,281 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) [2022-02-11 00:10:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 801 transitions. [2022-02-11 00:10:20,282 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 801 transitions. Word has length 21 [2022-02-11 00:10:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:20,282 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 801 transitions. [2022-02-11 00:10:20,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 801 transitions. [2022-02-11 00:10:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:20,282 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:20,282 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:20,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-02-11 00:10:20,482 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 [2022-02-11 00:10:20,483 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash 875027330, now seen corresponding path program 127 times [2022-02-11 00:10:20,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:20,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900370559] [2022-02-11 00:10:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:20,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:20,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:20,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900370559] [2022-02-11 00:10:20,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900370559] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:20,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789507647] [2022-02-11 00:10:20,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:10:20,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:20,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:20,669 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) [2022-02-11 00:10:20,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-02-11 00:10:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:20,688 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:20,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:21,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:21,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789507647] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:21,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:21,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:21,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035029552] [2022-02-11 00:10:21,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:21,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:21,634 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:21,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1906, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:21,635 INFO L87 Difference]: Start difference. First operand 357 states and 801 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:24,367 INFO L93 Difference]: Finished difference Result 770 states and 1550 transitions. [2022-02-11 00:10:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-11 00:10:24,368 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 [2022-02-11 00:10:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:24,368 INFO L225 Difference]: With dead ends: 770 [2022-02-11 00:10:24,368 INFO L226 Difference]: Without dead ends: 763 [2022-02-11 00:10:24,369 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1968, Invalid=11372, Unknown=0, NotChecked=0, Total=13340 [2022-02-11 00:10:24,369 INFO L934 BasicCegarLoop]: 43 mSDtfsCounter, 385 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:24,369 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 521 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:10:24,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-02-11 00:10:24,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 362. [2022-02-11 00:10:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.263157894736842) internal successors, (817), 361 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 817 transitions. [2022-02-11 00:10:24,374 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 817 transitions. Word has length 21 [2022-02-11 00:10:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:24,374 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 817 transitions. [2022-02-11 00:10:24,374 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) [2022-02-11 00:10:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 817 transitions. [2022-02-11 00:10:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:24,375 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:24,375 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:24,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-02-11 00:10:24,575 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 [2022-02-11 00:10:24,575 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1308650622, now seen corresponding path program 128 times [2022-02-11 00:10:24,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:24,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512229877] [2022-02-11 00:10:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:24,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:24,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512229877] [2022-02-11 00:10:24,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512229877] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:24,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746473692] [2022-02-11 00:10:24,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:10:24,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:24,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:24,753 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:10:24,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-02-11 00:10:24,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:24,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:24,772 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:24,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:25,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:25,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746473692] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:25,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:25,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:25,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968075245] [2022-02-11 00:10:25,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:25,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:25,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1909, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:25,698 INFO L87 Difference]: Start difference. First operand 362 states and 817 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:29,120 INFO L93 Difference]: Finished difference Result 804 states and 1629 transitions. [2022-02-11 00:10:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-11 00:10:29,121 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 [2022-02-11 00:10:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:29,122 INFO L225 Difference]: With dead ends: 804 [2022-02-11 00:10:29,122 INFO L226 Difference]: Without dead ends: 797 [2022-02-11 00:10:29,122 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4990 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2486, Invalid=14026, Unknown=0, NotChecked=0, Total=16512 [2022-02-11 00:10:29,122 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 369 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:29,123 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 673 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:10:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-02-11 00:10:29,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 358. [2022-02-11 00:10:29,127 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) [2022-02-11 00:10:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 803 transitions. [2022-02-11 00:10:29,127 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 803 transitions. Word has length 21 [2022-02-11 00:10:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:29,127 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 803 transitions. [2022-02-11 00:10:29,127 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) [2022-02-11 00:10:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 803 transitions. [2022-02-11 00:10:29,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:29,128 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:29,128 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:29,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-02-11 00:10:29,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:29,331 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:29,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash -35600040, now seen corresponding path program 129 times [2022-02-11 00:10:29,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:29,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630199817] [2022-02-11 00:10:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:29,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:29,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:29,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630199817] [2022-02-11 00:10:29,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630199817] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:29,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305119005] [2022-02-11 00:10:29,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:10:29,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:29,515 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:10:29,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-02-11 00:10:29,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-11 00:10:29,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:29,534 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:29,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:29,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:30,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305119005] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:30,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:30,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:10:30,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965042388] [2022-02-11 00:10:30,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:30,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:10:30,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:10:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2002, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:10:30,503 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) [2022-02-11 00:10:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:34,563 INFO L93 Difference]: Finished difference Result 770 states and 1561 transitions. [2022-02-11 00:10:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-11 00:10:34,563 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 [2022-02-11 00:10:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:34,564 INFO L225 Difference]: With dead ends: 770 [2022-02-11 00:10:34,564 INFO L226 Difference]: Without dead ends: 767 [2022-02-11 00:10:34,565 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5748 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2590, Invalid=16316, Unknown=0, NotChecked=0, Total=18906 [2022-02-11 00:10:34,565 INFO L934 BasicCegarLoop]: 41 mSDtfsCounter, 469 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:34,565 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 548 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:10:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-02-11 00:10:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 361. [2022-02-11 00:10:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 2.25) internal successors, (810), 360 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 810 transitions. [2022-02-11 00:10:34,570 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 810 transitions. Word has length 21 [2022-02-11 00:10:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:34,570 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 810 transitions. [2022-02-11 00:10:34,570 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) [2022-02-11 00:10:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 810 transitions. [2022-02-11 00:10:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:34,571 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:34,571 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:34,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-02-11 00:10:34,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:34,771 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -42922860, now seen corresponding path program 130 times [2022-02-11 00:10:34,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:34,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292878276] [2022-02-11 00:10:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:34,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:34,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292878276] [2022-02-11 00:10:34,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292878276] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:34,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023910975] [2022-02-11 00:10:34,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:10:34,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:34,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:34,955 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:10:34,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-02-11 00:10:34,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:10:34,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:34,974 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:35,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:35,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023910975] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:35,914 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:35,914 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:35,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133211612] [2022-02-11 00:10:35,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:35,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:35,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:35,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:35,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:35,915 INFO L87 Difference]: Start difference. First operand 361 states and 810 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:39,145 INFO L93 Difference]: Finished difference Result 793 states and 1604 transitions. [2022-02-11 00:10:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-11 00:10:39,146 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 [2022-02-11 00:10:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:39,146 INFO L225 Difference]: With dead ends: 793 [2022-02-11 00:10:39,147 INFO L226 Difference]: Without dead ends: 786 [2022-02-11 00:10:39,147 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4918 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2365, Invalid=13891, Unknown=0, NotChecked=0, Total=16256 [2022-02-11 00:10:39,147 INFO L934 BasicCegarLoop]: 42 mSDtfsCounter, 505 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:39,147 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 481 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-11 00:10:39,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-02-11 00:10:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 362. [2022-02-11 00:10:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 2.263157894736842) internal successors, (817), 361 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 817 transitions. [2022-02-11 00:10:39,152 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 817 transitions. Word has length 21 [2022-02-11 00:10:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:39,153 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 817 transitions. [2022-02-11 00:10:39,153 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) [2022-02-11 00:10:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 817 transitions. [2022-02-11 00:10:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:39,153 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:39,153 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:39,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2022-02-11 00:10:39,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-02-11 00:10:39,354 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2068366484, now seen corresponding path program 131 times [2022-02-11 00:10:39,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:39,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210226488] [2022-02-11 00:10:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:39,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:39,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210226488] [2022-02-11 00:10:39,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210226488] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:39,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711980897] [2022-02-11 00:10:39,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-11 00:10:39,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:39,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:39,537 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:10:39,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-02-11 00:10:39,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:39,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:39,555 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:39,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:39,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:40,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711980897] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:40,512 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:40,512 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:40,512 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497952250] [2022-02-11 00:10:40,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:40,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:40,512 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1907, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:40,513 INFO L87 Difference]: Start difference. First operand 362 states and 817 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:43,834 INFO L93 Difference]: Finished difference Result 803 states and 1621 transitions. [2022-02-11 00:10:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-11 00:10:43,834 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 [2022-02-11 00:10:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:43,835 INFO L225 Difference]: With dead ends: 803 [2022-02-11 00:10:43,835 INFO L226 Difference]: Without dead ends: 796 [2022-02-11 00:10:43,836 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4395 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2344, Invalid=12662, Unknown=0, NotChecked=0, Total=15006 [2022-02-11 00:10:43,837 INFO L934 BasicCegarLoop]: 40 mSDtfsCounter, 391 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:43,837 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 572 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-11 00:10:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-02-11 00:10:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 356. [2022-02-11 00:10:43,841 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) [2022-02-11 00:10:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 799 transitions. [2022-02-11 00:10:43,842 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 799 transitions. Word has length 21 [2022-02-11 00:10:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:43,842 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 799 transitions. [2022-02-11 00:10:43,842 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) [2022-02-11 00:10:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 799 transitions. [2022-02-11 00:10:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:43,842 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:43,842 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:43,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2022-02-11 00:10:44,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-02-11 00:10:44,043 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2069560104, now seen corresponding path program 132 times [2022-02-11 00:10:44,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:44,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133392265] [2022-02-11 00:10:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:44,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:44,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133392265] [2022-02-11 00:10:44,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133392265] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:44,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410508152] [2022-02-11 00:10:44,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-11 00:10:44,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:44,239 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:10:44,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-02-11 00:10:44,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-11 00:10:44,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:44,260 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:44,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:44,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:45,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410508152] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:45,286 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:45,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-02-11 00:10:45,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355143012] [2022-02-11 00:10:45,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:45,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-02-11 00:10:45,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-02-11 00:10:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-02-11 00:10:45,287 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) [2022-02-11 00:10:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:51,108 INFO L93 Difference]: Finished difference Result 940 states and 1860 transitions. [2022-02-11 00:10:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-02-11 00:10:51,109 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 [2022-02-11 00:10:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:51,110 INFO L225 Difference]: With dead ends: 940 [2022-02-11 00:10:51,110 INFO L226 Difference]: Without dead ends: 934 [2022-02-11 00:10:51,111 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8850 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3774, Invalid=22632, Unknown=0, NotChecked=0, Total=26406 [2022-02-11 00:10:51,112 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 620 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:51,112 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 631 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:10:51,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-02-11 00:10:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 363. [2022-02-11 00:10:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.25414364640884) internal successors, (816), 362 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 816 transitions. [2022-02-11 00:10:51,124 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 816 transitions. Word has length 21 [2022-02-11 00:10:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:51,124 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 816 transitions. [2022-02-11 00:10:51,124 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) [2022-02-11 00:10:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 816 transitions. [2022-02-11 00:10:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:51,124 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:51,124 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:51,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-02-11 00:10:51,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-02-11 00:10:51,325 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2076882924, now seen corresponding path program 133 times [2022-02-11 00:10:51,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:51,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128820479] [2022-02-11 00:10:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:51,499 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:51,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128820479] [2022-02-11 00:10:51,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128820479] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:51,499 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333983107] [2022-02-11 00:10:51,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-11 00:10:51,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:51,501 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:10:51,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-02-11 00:10:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:51,519 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:51,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:51,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:52,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333983107] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:52,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:52,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:52,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549190194] [2022-02-11 00:10:52,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:52,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:52,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1934, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:52,460 INFO L87 Difference]: Start difference. First operand 363 states and 816 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:58,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:10:58,203 INFO L93 Difference]: Finished difference Result 1019 states and 2022 transitions. [2022-02-11 00:10:58,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-11 00:10:58,203 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 [2022-02-11 00:10:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:10:58,204 INFO L225 Difference]: With dead ends: 1019 [2022-02-11 00:10:58,204 INFO L226 Difference]: Without dead ends: 1005 [2022-02-11 00:10:58,205 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9753 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4148, Invalid=24244, Unknown=0, NotChecked=0, Total=28392 [2022-02-11 00:10:58,206 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 624 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-11 00:10:58,206 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 623 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-11 00:10:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-02-11 00:10:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 374. [2022-02-11 00:10:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.284182305630027) internal successors, (852), 373 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:10:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 852 transitions. [2022-02-11 00:10:58,211 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 852 transitions. Word has length 21 [2022-02-11 00:10:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:10:58,212 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 852 transitions. [2022-02-11 00:10:58,212 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) [2022-02-11 00:10:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 852 transitions. [2022-02-11 00:10:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:10:58,212 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:10:58,212 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:10:58,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-02-11 00:10:58,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-02-11 00:10:58,413 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:10:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:10:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 34406420, now seen corresponding path program 134 times [2022-02-11 00:10:58,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:10:58,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793346432] [2022-02-11 00:10:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:10:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:10:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:10:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:58,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:10:58,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793346432] [2022-02-11 00:10:58,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793346432] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:10:58,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156230383] [2022-02-11 00:10:58,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-11 00:10:58,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:10:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:10:58,592 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:10:58,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-02-11 00:10:58,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-11 00:10:58,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:10:58,611 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:10:58,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:10:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:59,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:10:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:10:59,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156230383] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:10:59,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:10:59,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:10:59,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780128265] [2022-02-11 00:10:59,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:10:59,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:10:59,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:10:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:10:59,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:10:59,545 INFO L87 Difference]: Start difference. First operand 374 states and 852 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:06,575 INFO L93 Difference]: Finished difference Result 1055 states and 2079 transitions. [2022-02-11 00:11:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-11 00:11:06,575 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 [2022-02-11 00:11:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:06,576 INFO L225 Difference]: With dead ends: 1055 [2022-02-11 00:11:06,576 INFO L226 Difference]: Without dead ends: 1041 [2022-02-11 00:11:06,577 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12589 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4862, Invalid=30670, Unknown=0, NotChecked=0, Total=35532 [2022-02-11 00:11:06,577 INFO L934 BasicCegarLoop]: 46 mSDtfsCounter, 594 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:06,577 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 816 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-11 00:11:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-02-11 00:11:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 372. [2022-02-11 00:11:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.274932614555256) internal successors, (844), 371 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 844 transitions. [2022-02-11 00:11:06,583 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 844 transitions. Word has length 21 [2022-02-11 00:11:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:06,583 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 844 transitions. [2022-02-11 00:11:06,583 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) [2022-02-11 00:11:06,583 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 844 transitions. [2022-02-11 00:11:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:11:06,584 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:06,584 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:06,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-02-11 00:11:06,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:06,784 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1555288044, now seen corresponding path program 135 times [2022-02-11 00:11:06,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:06,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39565042] [2022-02-11 00:11:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:06,973 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:06,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39565042] [2022-02-11 00:11:06,973 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39565042] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:06,973 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238770954] [2022-02-11 00:11:06,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-11 00:11:06,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:06,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:06,975 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:11:06,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-02-11 00:11:06,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-11 00:11:06,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:06,994 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:11:06,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:07,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:07,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238770954] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:07,927 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:07,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:11:07,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995155897] [2022-02-11 00:11:07,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:07,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:11:07,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:11:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:11:07,928 INFO L87 Difference]: Start difference. First operand 372 states and 844 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-11 00:11:13,089 INFO L93 Difference]: Finished difference Result 923 states and 1819 transitions. [2022-02-11 00:11:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-11 00:11:13,090 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 [2022-02-11 00:11:13,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-11 00:11:13,091 INFO L225 Difference]: With dead ends: 923 [2022-02-11 00:11:13,091 INFO L226 Difference]: Without dead ends: 909 [2022-02-11 00:11:13,092 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8408 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3603, Invalid=21837, Unknown=0, NotChecked=0, Total=25440 [2022-02-11 00:11:13,092 INFO L934 BasicCegarLoop]: 44 mSDtfsCounter, 531 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:13,093 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 792 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-11 00:11:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-02-11 00:11:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 369. [2022-02-11 00:11:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.2690217391304346) internal successors, (835), 368 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-11 00:11:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 835 transitions. [2022-02-11 00:11:13,103 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 835 transitions. Word has length 21 [2022-02-11 00:11:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-11 00:11:13,103 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 835 transitions. [2022-02-11 00:11:13,103 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) [2022-02-11 00:11:13,103 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 835 transitions. [2022-02-11 00:11:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-11 00:11:13,104 INFO L507 BasicCegarLoop]: Found error trace [2022-02-11 00:11:13,104 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-11 00:11:13,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2022-02-11 00:11:13,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:13,304 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-11 00:11:13,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-11 00:11:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1599395416, now seen corresponding path program 136 times [2022-02-11 00:11:13,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-11 00:11:13,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932385202] [2022-02-11 00:11:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-11 00:11:13,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-11 00:11:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-11 00:11:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:13,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-11 00:11:13,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932385202] [2022-02-11 00:11:13,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932385202] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-11 00:11:13,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286297746] [2022-02-11 00:11:13,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-11 00:11:13,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:13,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-11 00:11:13,485 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-11 00:11:13,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-02-11 00:11:13,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-11 00:11:13,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-11 00:11:13,504 WARN L261 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-11 00:11:13,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-11 00:11:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:13,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-11 00:11:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-11 00:11:14,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286297746] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-11 00:11:14,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-11 00:11:14,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-02-11 00:11:14,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169600290] [2022-02-11 00:11:14,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-11 00:11:14,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-11 00:11:14,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-11 00:11:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-11 00:11:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2022-02-11 00:11:14,414 INFO L87 Difference]: Start difference. First operand 369 states and 835 transitions. Second operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-11 00:11:15,662 WARN L244 SmtUtils]: Removed 8 from assertion stack [2022-02-11 00:11:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-11 00:11:15,663 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1067, Invalid=5905, Unknown=0, NotChecked=0, Total=6972 [2022-02-11 00:11:15,664 INFO L934 BasicCegarLoop]: 24 mSDtfsCounter, 158 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-11 00:11:15,664 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 232 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-11 00:11:15,664 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-11 00:11:15,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-02-11 00:11:15,688 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-11 00:11:15,711 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 [2022-02-11 00:11:15,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-11 00:11:15,865 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (369states) and FLOYD_HOARE automaton (currently 41 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 11ms.. [2022-02-11 00:11:15,866 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-11 00:11:15,867 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-11 00:11:15,869 INFO L733 BasicCegarLoop]: Path program histogram: [136, 17, 17, 3] [2022-02-11 00:11:15,870 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-11 00:11:15,870 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-11 00:11:15,871 INFO L202 PluginConnector]: Adding new model concurrent_mult.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 12:11:15 BasicIcfg [2022-02-11 00:11:15,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-11 00:11:15,871 INFO L158 Benchmark]: Toolchain (without parser) took 753802.57ms. Allocated memory was 192.9MB in the beginning and 310.4MB in the end (delta: 117.4MB). Free memory was 157.2MB in the beginning and 186.0MB in the end (delta: -28.8MB). Peak memory consumption was 90.4MB. Max. memory is 8.0GB. [2022-02-11 00:11:15,871 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 192.9MB. Free memory was 158.3MB in the beginning and 158.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-11 00:11:15,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.88ms. Allocated memory is still 192.9MB. Free memory was 157.2MB in the beginning and 155.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-11 00:11:15,871 INFO L158 Benchmark]: Boogie Preprocessor took 10.07ms. Allocated memory is still 192.9MB. Free memory was 155.6MB in the beginning and 154.7MB in the end (delta: 878.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-11 00:11:15,872 INFO L158 Benchmark]: RCFGBuilder took 137.08ms. Allocated memory is still 192.9MB. Free memory was 154.7MB in the beginning and 146.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-11 00:11:15,872 INFO L158 Benchmark]: TraceAbstraction took 753631.26ms. Allocated memory was 192.9MB in the beginning and 310.4MB in the end (delta: 117.4MB). Free memory was 145.9MB in the beginning and 186.0MB in the end (delta: -40.1MB). Peak memory consumption was 77.8MB. Max. memory is 8.0GB. [2022-02-11 00:11:15,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09ms. Allocated memory is still 192.9MB. Free memory was 158.3MB in the beginning and 158.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.88ms. Allocated memory is still 192.9MB. Free memory was 157.2MB in the beginning and 155.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.07ms. Allocated memory is still 192.9MB. Free memory was 155.6MB in the beginning and 154.7MB in the end (delta: 878.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 137.08ms. Allocated memory is still 192.9MB. Free memory was 154.7MB in the beginning and 146.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 753631.26ms. Allocated memory was 192.9MB in the beginning and 310.4MB in the end (delta: 117.4MB). Free memory was 145.9MB in the beginning and 186.0MB in the end (delta: -40.1MB). Peak memory consumption was 77.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (369states) and FLOYD_HOARE automaton (currently 41 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 11ms.. - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (369states) and FLOYD_HOARE automaton (currently 41 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 11ms.. - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (369states) and FLOYD_HOARE automaton (currently 41 states, 47 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 32 for 11ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 753.5s, OverallIterations: 173, TraceHistogramMax: 2, PathProgramHistogramMax: 136, EmptinessCheckTime: 0.1s, AutomataDifference: 536.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63743 SdHoareTripleChecker+Valid, 112.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63743 mSDsluCounter, 110706 SdHoareTripleChecker+Invalid, 95.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 103622 mSDsCounter, 15122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 276993 IncrementalHoareTripleChecker+Invalid, 292115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15122 mSolverCounterUnsat, 7926 mSDtfsCounter, 276993 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20612 GetRequests, 1945 SyntacticMatches, 342 SemanticMatches, 18324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674436 ImplicationChecksByTransitivity, 533.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=147, InterpolantAutomatonStates: 11987, 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, 172 MinimizatonAttempts, 55264 StatesRemovedByMinimization, 172 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 176.1s InterpolantComputationTime, 6993 NumberOfCodeBlocks, 6993 NumberOfCodeBlocksAsserted, 473 NumberOfCheckSat, 9954 ConstructedInterpolants, 0 QuantifiedInterpolants, 138745 SizeOfPredicates, 1836 NumberOfNonLiveVariables, 8510 ConjunctsInSsa, 4798 ConjunctsInUnsatCore, 513 InterpolantComputations, 3 PerfectInterpolantSequences, 0/942 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