/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 20:23:16,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:23:16,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:23:16,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:23:16,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:23:16,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:23:16,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:23:16,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:23:16,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:23:16,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:23:16,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:23:16,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:23:16,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:23:16,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:23:16,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:23:16,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:23:16,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:23:16,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:23:16,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:23:16,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:23:16,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:23:16,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:23:16,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:23:16,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:23:16,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 20:23:16,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:23:16,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:23:16,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:23:16,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:23:16,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:23:16,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:23:16,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:23:16,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:23:16,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:23:16,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:23:16,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:23:16,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 20:23:17,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:23:17,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:23:17,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:23:17,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:23:17,039 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:23:17,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:23:17,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:23:17,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:23:17,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:23:17,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:23:17,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:23:17,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:23:17,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:23:17,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:23:17,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:23:17,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:23:17,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:23:17,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:23:17,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:23:17,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:23:17,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:23:17,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:23:17,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:23:17,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:23:17,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:23:17,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:23:17,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:23:17,045 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 20:23:17,045 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:23:17,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:23:17,046 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 20:23:17,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:23:17,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:23:17,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:23:17,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:23:17,499 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:23:17,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-09-11 20:23:17,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/979023dc7/dddf3a0d55f44b76a81a36a8a8020477/FLAG37f31cbb5 [2020-09-11 20:23:18,318 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:23:18,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/stack-1.i [2020-09-11 20:23:18,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/979023dc7/dddf3a0d55f44b76a81a36a8a8020477/FLAG37f31cbb5 [2020-09-11 20:23:18,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/979023dc7/dddf3a0d55f44b76a81a36a8a8020477 [2020-09-11 20:23:18,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:23:18,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:23:18,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:23:18,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:23:18,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:23:18,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:23:18" (1/1) ... [2020-09-11 20:23:18,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14df979a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:18, skipping insertion in model container [2020-09-11 20:23:18,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:23:18" (1/1) ... [2020-09-11 20:23:18,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:23:18,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:23:19,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:23:19,394 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:23:19,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:23:19,619 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:23:19,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19 WrapperNode [2020-09-11 20:23:19,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:23:19,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:23:19,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:23:19,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:23:19,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:23:19,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:23:19,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:23:19,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:23:19,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... [2020-09-11 20:23:19,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:23:19,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:23:19,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:23:19,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:23:19,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:23:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-09-11 20:23:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-09-11 20:23:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-09-11 20:23:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-09-11 20:23:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:23:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:23:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-11 20:23:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:23:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-09-11 20:23:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-11 20:23:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:23:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:23:19,860 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:23:20,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:23:20,422 INFO L295 CfgBuilder]: Removed 24 assume(true) statements. [2020-09-11 20:23:20,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:23:20 BoogieIcfgContainer [2020-09-11 20:23:20,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:23:20,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:23:20,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:23:20,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:23:20,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:23:18" (1/3) ... [2020-09-11 20:23:20,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c12912a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:23:20, skipping insertion in model container [2020-09-11 20:23:20,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:23:19" (2/3) ... [2020-09-11 20:23:20,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c12912a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:23:20, skipping insertion in model container [2020-09-11 20:23:20,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:23:20" (3/3) ... [2020-09-11 20:23:20,437 INFO L109 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-09-11 20:23:20,450 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:23:20,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:23:20,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-11 20:23:20,464 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:23:20,504 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,505 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,505 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,521 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,522 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,522 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,522 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,522 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,523 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,523 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,523 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,523 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,524 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,524 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,524 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,524 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,524 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,525 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,525 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,525 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,525 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,525 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,526 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,526 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,526 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,526 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,526 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,527 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,527 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,527 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,527 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,528 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,528 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,528 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,528 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,528 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,529 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,529 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,529 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,529 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,530 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,530 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,530 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,530 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,531 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,531 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,531 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,531 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,532 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,532 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,532 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,532 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,532 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,533 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,533 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,533 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,533 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,533 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,534 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,534 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,534 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,534 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,535 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,535 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,535 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,535 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,535 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,536 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,537 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,537 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,537 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,537 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,538 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,538 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,538 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,538 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,539 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,539 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,539 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,539 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,540 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,540 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,540 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,541 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,541 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,541 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,541 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,541 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,542 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,542 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,542 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,542 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,542 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,543 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,543 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,543 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,543 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,544 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,544 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,544 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,548 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,549 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,549 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,549 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,549 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,554 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,555 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,556 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,556 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,556 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,556 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,556 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,557 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,557 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,557 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,557 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,558 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,558 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,573 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,573 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,574 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,575 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,576 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,576 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:23:20,611 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-11 20:23:20,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:23:20,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:23:20,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:23:20,637 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:23:20,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:23:20,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:23:20,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:23:20,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:23:20,661 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 142 transitions, 306 flow [2020-09-11 20:23:20,664 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-09-11 20:23:20,740 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-09-11 20:23:20,741 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-11 20:23:20,749 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-09-11 20:23:20,757 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-09-11 20:23:20,795 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-09-11 20:23:20,795 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-11 20:23:20,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-09-11 20:23:20,803 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 5744 [2020-09-11 20:23:20,805 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:23:23,507 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-11 20:23:23,629 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-09-11 20:23:24,331 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-09-11 20:23:24,601 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-09-11 20:23:24,628 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7654 [2020-09-11 20:23:24,628 INFO L214 etLargeBlockEncoding]: Total number of compositions: 124 [2020-09-11 20:23:24,633 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-09-11 20:23:24,661 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-09-11 20:23:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-09-11 20:23:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 20:23:24,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:24,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-11 20:23:24,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:24,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:24,684 INFO L82 PathProgramCache]: Analyzing trace with hash 89961792, now seen corresponding path program 1 times [2020-09-11 20:23:24,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:24,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058473742] [2020-09-11 20:23:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:25,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058473742] [2020-09-11 20:23:25,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:23:25,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:23:25,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [936858549] [2020-09-11 20:23:25,061 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:25,068 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:25,088 INFO L274 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-09-11 20:23:25,088 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:25,091 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:25,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:23:25,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:25,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:23:25,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:23:25,114 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-09-11 20:23:25,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:25,239 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-09-11 20:23:25,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:23:25,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-11 20:23:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:25,279 INFO L225 Difference]: With dead ends: 504 [2020-09-11 20:23:25,279 INFO L226 Difference]: Without dead ends: 460 [2020-09-11 20:23:25,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:23:25,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-09-11 20:23:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-09-11 20:23:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-09-11 20:23:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-09-11 20:23:25,378 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-09-11 20:23:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:25,378 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-09-11 20:23:25,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:23:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-09-11 20:23:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 20:23:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:25,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:23:25,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:23:25,382 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:25,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1286121651, now seen corresponding path program 1 times [2020-09-11 20:23:25,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:25,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123437059] [2020-09-11 20:23:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:25,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123437059] [2020-09-11 20:23:25,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:23:25,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:23:25,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1049276704] [2020-09-11 20:23:25,522 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:25,523 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:25,525 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-11 20:23:25,525 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:25,525 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:25,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:23:25,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:25,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:23:25,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:23:25,528 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-09-11 20:23:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:25,547 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-09-11 20:23:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:23:25,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 20:23:25,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:25,553 INFO L225 Difference]: With dead ends: 464 [2020-09-11 20:23:25,553 INFO L226 Difference]: Without dead ends: 464 [2020-09-11 20:23:25,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:23:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-11 20:23:25,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-09-11 20:23:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-09-11 20:23:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-09-11 20:23:25,589 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-09-11 20:23:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:25,589 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-09-11 20:23:25,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:23:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-09-11 20:23:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:23:25,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:25,592 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:23:25,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:23:25,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:25,593 INFO L82 PathProgramCache]: Analyzing trace with hash 554739665, now seen corresponding path program 1 times [2020-09-11 20:23:25,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:25,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437753146] [2020-09-11 20:23:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:25,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437753146] [2020-09-11 20:23:25,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347951973] [2020-09-11 20:23:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:23:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:25,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-11 20:23:25,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:23:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:25,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:23:25,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-09-11 20:23:25,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [484397585] [2020-09-11 20:23:25,934 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:25,937 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:25,939 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-09-11 20:23:25,940 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:25,940 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:25,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 20:23:25,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 20:23:25,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 20:23:25,941 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-09-11 20:23:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:26,055 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-09-11 20:23:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 20:23:26,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-11 20:23:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:26,063 INFO L225 Difference]: With dead ends: 866 [2020-09-11 20:23:26,063 INFO L226 Difference]: Without dead ends: 851 [2020-09-11 20:23:26,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:23:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-09-11 20:23:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-09-11 20:23:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-09-11 20:23:26,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-09-11 20:23:26,101 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-09-11 20:23:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:26,102 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-09-11 20:23:26,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 20:23:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-09-11 20:23:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 20:23:26,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:26,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:23:26,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-11 20:23:26,311 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1825595924, now seen corresponding path program 1 times [2020-09-11 20:23:26,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:26,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260743954] [2020-09-11 20:23:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:26,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260743954] [2020-09-11 20:23:26,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:23:26,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:23:26,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [883307554] [2020-09-11 20:23:26,393 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:26,396 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:26,400 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-09-11 20:23:26,401 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:26,420 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:26,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:23:26,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:26,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:23:26,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:23:26,422 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-09-11 20:23:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:26,448 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-09-11 20:23:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:23:26,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-11 20:23:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:26,456 INFO L225 Difference]: With dead ends: 304 [2020-09-11 20:23:26,457 INFO L226 Difference]: Without dead ends: 304 [2020-09-11 20:23:26,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:23:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-11 20:23:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-09-11 20:23:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-09-11 20:23:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-09-11 20:23:26,475 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-09-11 20:23:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:26,477 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-09-11 20:23:26,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:23:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-09-11 20:23:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 20:23:26,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:26,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:23:26,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 20:23:26,487 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1573705314, now seen corresponding path program 1 times [2020-09-11 20:23:26,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:26,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226476174] [2020-09-11 20:23:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:26,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226476174] [2020-09-11 20:23:26,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:23:26,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 20:23:26,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [228348179] [2020-09-11 20:23:26,674 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:26,678 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:26,686 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-09-11 20:23:26,687 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:26,932 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:26,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 20:23:26,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:26,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 20:23:26,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 20:23:26,934 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 5 states. [2020-09-11 20:23:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:27,006 INFO L93 Difference]: Finished difference Result 439 states and 949 transitions. [2020-09-11 20:23:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 20:23:27,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-11 20:23:27,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:27,011 INFO L225 Difference]: With dead ends: 439 [2020-09-11 20:23:27,012 INFO L226 Difference]: Without dead ends: 439 [2020-09-11 20:23:27,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-11 20:23:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-11 20:23:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 315. [2020-09-11 20:23:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-09-11 20:23:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 699 transitions. [2020-09-11 20:23:27,026 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 699 transitions. Word has length 17 [2020-09-11 20:23:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:27,027 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 699 transitions. [2020-09-11 20:23:27,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 20:23:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 699 transitions. [2020-09-11 20:23:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-11 20:23:27,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:27,030 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-09-11 20:23:27,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 20:23:27,030 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:27,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1192042464, now seen corresponding path program 2 times [2020-09-11 20:23:27,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:27,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018109009] [2020-09-11 20:23:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:27,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018109009] [2020-09-11 20:23:27,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396896159] [2020-09-11 20:23:27,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:23:27,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-11 20:23:27,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:23:27,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-11 20:23:27,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:23:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:27,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:23:27,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-09-11 20:23:27,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [516087989] [2020-09-11 20:23:27,356 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:27,362 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:27,367 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-09-11 20:23:27,367 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:27,368 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:27,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 20:23:27,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:27,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 20:23:27,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-11 20:23:27,371 INFO L87 Difference]: Start difference. First operand 315 states and 699 transitions. Second operand 9 states. [2020-09-11 20:23:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:27,490 INFO L93 Difference]: Finished difference Result 548 states and 1175 transitions. [2020-09-11 20:23:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-11 20:23:27,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-11 20:23:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:27,494 INFO L225 Difference]: With dead ends: 548 [2020-09-11 20:23:27,495 INFO L226 Difference]: Without dead ends: 548 [2020-09-11 20:23:27,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-11 20:23:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-09-11 20:23:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 392. [2020-09-11 20:23:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-09-11 20:23:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 868 transitions. [2020-09-11 20:23:27,512 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 868 transitions. Word has length 20 [2020-09-11 20:23:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:27,512 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 868 transitions. [2020-09-11 20:23:27,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 20:23:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 868 transitions. [2020-09-11 20:23:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-11 20:23:27,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:27,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:23:27,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:23:27,728 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:27,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1105063959, now seen corresponding path program 1 times [2020-09-11 20:23:27,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:27,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878453976] [2020-09-11 20:23:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:28,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878453976] [2020-09-11 20:23:28,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:23:28,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-11 20:23:28,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1954284211] [2020-09-11 20:23:28,252 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:28,255 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:28,265 INFO L274 McrAutomatonBuilder]: Finished intersection with 42 states and 61 transitions. [2020-09-11 20:23:28,265 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:28,367 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-09-11 20:23:28,434 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-09-11 20:23:28,465 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-09-11 20:23:28,562 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:28,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-11 20:23:28,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:28,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-11 20:23:28,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-11 20:23:28,566 INFO L87 Difference]: Start difference. First operand 392 states and 868 transitions. Second operand 14 states. [2020-09-11 20:23:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:29,977 INFO L93 Difference]: Finished difference Result 703 states and 1483 transitions. [2020-09-11 20:23:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-11 20:23:29,978 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-09-11 20:23:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:29,983 INFO L225 Difference]: With dead ends: 703 [2020-09-11 20:23:29,983 INFO L226 Difference]: Without dead ends: 631 [2020-09-11 20:23:29,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-09-11 20:23:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-11 20:23:29,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 422. [2020-09-11 20:23:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-09-11 20:23:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 927 transitions. [2020-09-11 20:23:29,999 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 927 transitions. Word has length 21 [2020-09-11 20:23:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:29,999 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 927 transitions. [2020-09-11 20:23:29,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-11 20:23:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 927 transitions. [2020-09-11 20:23:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-11 20:23:30,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:30,001 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-09-11 20:23:30,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 20:23:30,001 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:30,002 INFO L82 PathProgramCache]: Analyzing trace with hash 790528241, now seen corresponding path program 3 times [2020-09-11 20:23:30,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:30,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837663490] [2020-09-11 20:23:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:30,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837663490] [2020-09-11 20:23:30,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363762632] [2020-09-11 20:23:30,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:23:30,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-11 20:23:30,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:23:30,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 20:23:30,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:23:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:30,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 20:23:30,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-09-11 20:23:30,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1119291504] [2020-09-11 20:23:30,343 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:23:30,348 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:23:30,357 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2020-09-11 20:23:30,358 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:23:30,358 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:23:30,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-11 20:23:30,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:23:30,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-11 20:23:30,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-11 20:23:30,360 INFO L87 Difference]: Start difference. First operand 422 states and 927 transitions. Second operand 11 states. [2020-09-11 20:23:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:23:30,474 INFO L93 Difference]: Finished difference Result 759 states and 1604 transitions. [2020-09-11 20:23:30,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-11 20:23:30,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-11 20:23:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:23:30,479 INFO L225 Difference]: With dead ends: 759 [2020-09-11 20:23:30,479 INFO L226 Difference]: Without dead ends: 759 [2020-09-11 20:23:30,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-11 20:23:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-09-11 20:23:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 499. [2020-09-11 20:23:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-09-11 20:23:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1096 transitions. [2020-09-11 20:23:30,497 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1096 transitions. Word has length 27 [2020-09-11 20:23:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:23:30,498 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 1096 transitions. [2020-09-11 20:23:30,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-11 20:23:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1096 transitions. [2020-09-11 20:23:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-11 20:23:30,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:23:30,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:23:30,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:23:30,714 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:23:30,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:23:30,715 INFO L82 PathProgramCache]: Analyzing trace with hash -859233366, now seen corresponding path program 2 times [2020-09-11 20:23:30,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:23:30,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27011348] [2020-09-11 20:23:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:23:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:23:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:23:31,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27011348] [2020-09-11 20:23:31,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502958370] [2020-09-11 20:23:31,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:23:31,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-09-11 20:23:31,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-11 20:23:31,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-09-11 20:23:31,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 20:23:31,533 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-09-11 20:23:31,533 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-11 20:23:31,556 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-09-11 20:23:31,560 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-11 20:23:31,561 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-09-11 20:23:31,924 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-09-11 20:23:31,969 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-09-11 20:23:32,098 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-09-11 20:23:32,241 INFO L545 ElimStorePlain]: Start of recursive call 2: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-09-11 20:23:32,253 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-09-11 20:23:32,285 WARN L341 FreeRefinementEngine]: Global settings require throwing the following exception [2020-09-11 20:23:32,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 20:23:32,501 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Possible infinite loop detected aux_div_57 already exists at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:392) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:789) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:777) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:181) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:398) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:422) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:317) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:331) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.access$1(DualJunctionDer.java:328) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:226) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:193) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:177) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:144) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminate(DualJunctionDer.java:122) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:740) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:703) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:620) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:336) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:199) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:711) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:296) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:602) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:515) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:239) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:309) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:105) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-11 20:23:32,514 INFO L168 Benchmark]: Toolchain (without parser) took 13983.39 ms. Allocated memory was 141.0 MB in the beginning and 342.9 MB in the end (delta: 201.9 MB). Free memory was 102.2 MB in the beginning and 133.5 MB in the end (delta: -31.2 MB). Peak memory consumption was 170.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:23:32,515 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 20:23:32,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1088.65 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 137.7 MB in the end (delta: -36.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:23:32,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.13 ms. Allocated memory is still 205.5 MB. Free memory was 137.7 MB in the beginning and 135.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:23:32,520 INFO L168 Benchmark]: Boogie Preprocessor took 55.88 ms. Allocated memory is still 205.5 MB. Free memory was 135.1 MB in the beginning and 133.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 20:23:32,520 INFO L168 Benchmark]: RCFGBuilder took 654.82 ms. Allocated memory is still 205.5 MB. Free memory was 133.1 MB in the beginning and 100.3 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-09-11 20:23:32,524 INFO L168 Benchmark]: TraceAbstraction took 12076.90 ms. Allocated memory was 205.5 MB in the beginning and 342.9 MB in the end (delta: 137.4 MB). Free memory was 99.7 MB in the beginning and 133.5 MB in the end (delta: -33.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:23:32,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1088.65 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 137.7 MB in the end (delta: -36.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 95.13 ms. Allocated memory is still 205.5 MB. Free memory was 137.7 MB in the beginning and 135.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.88 ms. Allocated memory is still 205.5 MB. Free memory was 135.1 MB in the beginning and 133.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 654.82 ms. Allocated memory is still 205.5 MB. Free memory was 133.1 MB in the beginning and 100.3 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12076.90 ms. Allocated memory was 205.5 MB in the beginning and 342.9 MB in the end (delta: 137.4 MB). Free memory was 99.7 MB in the beginning and 133.5 MB in the end (delta: -33.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 3.9s, 137 ProgramPointsBefore, 40 ProgramPointsAfterwards, 142 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 3268 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 7654 CheckedPairsTotal, 124 TotalNumberOfCompositions - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected aux_div_57 already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected aux_div_57 already exists: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:392) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...