/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:34:21,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:34:21,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:34:21,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 21:34:21,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 21:34:21,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 21:34:21,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 21:34:21,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 21:34:21,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 21:34:21,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 21:34:21,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 21:34:21,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 21:34:21,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:34:21,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:34:21,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:34:21,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:34:21,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:34:21,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:34:21,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:34:21,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:34:21,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:34:21,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:34:21,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:34:21,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:34:21,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 21:34:21,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 21:34:21,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 21:34:21,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 21:34:21,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 21:34:21,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 21:34:21,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 21:34:21,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 21:34:21,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 21:34:21,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 21:34:21,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 21:34:21,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 21:34:21,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 21:34:21,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 21:34:21,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:34:21,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:34:21,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:34:21,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:34:21,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:34:21,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:34:21,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:34:21,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:34:21,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:34:21,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:34:21,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:34:21,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:34:21,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:34:21,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:34:21,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:34:21,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:34:21,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:34:21,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:34:21,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:34:21,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:34:21,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:34:21,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:34:21,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:34:21,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:34:21,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:34:21,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:34:21,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:34:21,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:34:21,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:34:21,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:34:21,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:34:21,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:34:21,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:34:21,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:34:21,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:34:21,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:34:21,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:34:21,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:34:21,799 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:34:21,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-10-21 21:34:21,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31fd39c9/1a43fc26606e4650987e99b10798ae4e/FLAGe9f607f8e [2020-10-21 21:34:22,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:34:22,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-10-21 21:34:22,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31fd39c9/1a43fc26606e4650987e99b10798ae4e/FLAGe9f607f8e [2020-10-21 21:34:22,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31fd39c9/1a43fc26606e4650987e99b10798ae4e [2020-10-21 21:34:22,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:34:22,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:34:22,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:34:22,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:34:22,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:34:22,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:34:22" (1/1) ... [2020-10-21 21:34:22,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c45666e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:22, skipping insertion in model container [2020-10-21 21:34:22,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:34:22" (1/1) ... [2020-10-21 21:34:22,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:34:22,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:34:23,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:34:23,274 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:34:23,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:34:23,399 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:34:23,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23 WrapperNode [2020-10-21 21:34:23,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:34:23,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:34:23,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:34:23,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:34:23,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:34:23,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:34:23,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:34:23,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:34:23,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... [2020-10-21 21:34:23,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:34:23,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:34:23,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:34:23,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:34:23,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-21 21:34:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2020-10-21 21:34:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2020-10-21 21:34:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 21:34:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2020-10-21 21:34:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2020-10-21 21:34:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:34:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-21 21:34:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:34:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:34:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:34:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:34:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:34:23,549 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 21:34:23,969 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:34:23,969 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 21:34:23,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:34:23 BoogieIcfgContainer [2020-10-21 21:34:23,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:34:23,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:34:23,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:34:23,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:34:23,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:34:22" (1/3) ... [2020-10-21 21:34:23,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2330e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:34:23, skipping insertion in model container [2020-10-21 21:34:23,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:34:23" (2/3) ... [2020-10-21 21:34:23,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2330e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:34:23, skipping insertion in model container [2020-10-21 21:34:23,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:34:23" (3/3) ... [2020-10-21 21:34:23,984 INFO L111 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2020-10-21 21:34:23,998 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:34:23,998 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:34:24,008 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 21:34:24,009 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:34:24,041 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,041 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,041 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,042 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,042 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,043 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,043 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,043 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,044 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,044 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,044 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,045 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,045 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,045 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,046 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,047 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,047 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,047 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,048 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,048 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,048 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,049 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,049 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,049 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,050 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,050 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,054 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,054 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,055 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,055 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,055 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,055 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,056 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,056 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,062 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,062 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,062 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,063 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,063 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,063 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,063 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:34:24,071 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-21 21:34:24,085 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-21 21:34:24,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:34:24,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:34:24,107 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:34:24,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:34:24,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:34:24,108 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:34:24,108 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:34:24,108 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:34:24,122 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:34:24,125 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 98 transitions, 218 flow [2020-10-21 21:34:24,128 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 98 transitions, 218 flow [2020-10-21 21:34:24,130 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 96 places, 98 transitions, 218 flow [2020-10-21 21:34:24,183 INFO L129 PetriNetUnfolder]: 8/98 cut-off events. [2020-10-21 21:34:24,183 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-21 21:34:24,190 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 98 events. 8/98 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2020-10-21 21:34:24,193 INFO L116 LiptonReduction]: Number of co-enabled transitions 1376 [2020-10-21 21:34:26,357 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-21 21:34:26,476 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-21 21:34:27,287 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 137 [2020-10-21 21:34:27,591 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-21 21:34:27,620 INFO L131 LiptonReduction]: Checked pairs total: 4493 [2020-10-21 21:34:27,621 INFO L133 LiptonReduction]: Total number of compositions: 94 [2020-10-21 21:34:27,627 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 88 flow [2020-10-21 21:34:27,647 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2020-10-21 21:34:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-10-21 21:34:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-21 21:34:27,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:27,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-21 21:34:27,658 INFO L429 AbstractCegarLoop]: === Iteration 1 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:34:27,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:27,664 INFO L82 PathProgramCache]: Analyzing trace with hash 370145274, now seen corresponding path program 1 times [2020-10-21 21:34:27,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:27,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306085413] [2020-10-21 21:34:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:27,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306085413] [2020-10-21 21:34:27,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:27,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:34:27,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666776275] [2020-10-21 21:34:27,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:34:27,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:27,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:34:27,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:34:27,921 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-10-21 21:34:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:27,955 INFO L93 Difference]: Finished difference Result 197 states and 434 transitions. [2020-10-21 21:34:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:34:27,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-21 21:34:27,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:27,983 INFO L225 Difference]: With dead ends: 197 [2020-10-21 21:34:27,983 INFO L226 Difference]: Without dead ends: 167 [2020-10-21 21:34:27,985 INFO L677 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 [2020-10-21 21:34:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-21 21:34:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-10-21 21:34:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-21 21:34:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 363 transitions. [2020-10-21 21:34:28,088 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 363 transitions. Word has length 5 [2020-10-21 21:34:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:28,089 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 363 transitions. [2020-10-21 21:34:28,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:34:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 363 transitions. [2020-10-21 21:34:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 21:34:28,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:28,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:28,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:34:28,094 INFO L429 AbstractCegarLoop]: === Iteration 2 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:34:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:28,095 INFO L82 PathProgramCache]: Analyzing trace with hash -791989179, now seen corresponding path program 1 times [2020-10-21 21:34:28,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:28,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142676143] [2020-10-21 21:34:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:28,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142676143] [2020-10-21 21:34:28,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:28,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:34:28,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661034770] [2020-10-21 21:34:28,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:34:28,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:28,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:34:28,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:34:28,178 INFO L87 Difference]: Start difference. First operand 167 states and 363 transitions. Second operand 3 states. [2020-10-21 21:34:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:28,214 INFO L93 Difference]: Finished difference Result 182 states and 370 transitions. [2020-10-21 21:34:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:34:28,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-21 21:34:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:28,217 INFO L225 Difference]: With dead ends: 182 [2020-10-21 21:34:28,217 INFO L226 Difference]: Without dead ends: 157 [2020-10-21 21:34:28,218 INFO L677 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 [2020-10-21 21:34:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-21 21:34:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 143. [2020-10-21 21:34:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-21 21:34:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 302 transitions. [2020-10-21 21:34:28,231 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 302 transitions. Word has length 7 [2020-10-21 21:34:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:28,232 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 302 transitions. [2020-10-21 21:34:28,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:34:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 302 transitions. [2020-10-21 21:34:28,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 21:34:28,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:28,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:28,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:34:28,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:34:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:28,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1802702046, now seen corresponding path program 1 times [2020-10-21 21:34:28,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:28,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662744884] [2020-10-21 21:34:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:28,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662744884] [2020-10-21 21:34:28,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:28,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:34:28,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604556360] [2020-10-21 21:34:28,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:34:28,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:28,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:34:28,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:34:28,312 INFO L87 Difference]: Start difference. First operand 143 states and 302 transitions. Second operand 3 states. [2020-10-21 21:34:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:28,342 INFO L93 Difference]: Finished difference Result 138 states and 278 transitions. [2020-10-21 21:34:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:34:28,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 21:34:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:28,345 INFO L225 Difference]: With dead ends: 138 [2020-10-21 21:34:28,345 INFO L226 Difference]: Without dead ends: 84 [2020-10-21 21:34:28,345 INFO L677 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 [2020-10-21 21:34:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-21 21:34:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-21 21:34:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-21 21:34:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 151 transitions. [2020-10-21 21:34:28,352 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 151 transitions. Word has length 8 [2020-10-21 21:34:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:28,353 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 151 transitions. [2020-10-21 21:34:28,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:34:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 151 transitions. [2020-10-21 21:34:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:34:28,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:28,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:28,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:34:28,355 INFO L429 AbstractCegarLoop]: === Iteration 4 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:34:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:28,355 INFO L82 PathProgramCache]: Analyzing trace with hash 762481646, now seen corresponding path program 1 times [2020-10-21 21:34:28,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:28,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643505846] [2020-10-21 21:34:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:28,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643505846] [2020-10-21 21:34:28,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:28,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 21:34:28,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736890374] [2020-10-21 21:34:28,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:34:28,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:28,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:34:28,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:34:28,417 INFO L87 Difference]: Start difference. First operand 84 states and 151 transitions. Second operand 3 states. [2020-10-21 21:34:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:28,427 INFO L93 Difference]: Finished difference Result 84 states and 145 transitions. [2020-10-21 21:34:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:34:28,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-21 21:34:28,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:28,429 INFO L225 Difference]: With dead ends: 84 [2020-10-21 21:34:28,429 INFO L226 Difference]: Without dead ends: 72 [2020-10-21 21:34:28,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:34:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-21 21:34:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-21 21:34:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-21 21:34:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-10-21 21:34:28,434 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 12 [2020-10-21 21:34:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:28,434 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-10-21 21:34:28,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:34:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-10-21 21:34:28,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 21:34:28,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:34:28,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:34:28,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 21:34:28,436 INFO L429 AbstractCegarLoop]: === Iteration 5 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:34:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:34:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 630959256, now seen corresponding path program 1 times [2020-10-21 21:34:28,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:34:28,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211617526] [2020-10-21 21:34:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:34:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:34:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:34:28,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211617526] [2020-10-21 21:34:28,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:34:28,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:34:28,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122950062] [2020-10-21 21:34:28,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:34:28,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:34:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:34:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:34:28,535 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 4 states. [2020-10-21 21:34:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:34:28,558 INFO L93 Difference]: Finished difference Result 22 states and 35 transitions. [2020-10-21 21:34:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 21:34:28,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-21 21:34:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:34:28,559 INFO L225 Difference]: With dead ends: 22 [2020-10-21 21:34:28,559 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 21:34:28,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:34:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 21:34:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 21:34:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 21:34:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 21:34:28,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-21 21:34:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:34:28,561 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 21:34:28,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:34:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 21:34:28,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 21:34:28,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 21:34:28,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:34:28 BasicIcfg [2020-10-21 21:34:28,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:34:28,568 INFO L168 Benchmark]: Toolchain (without parser) took 5905.56 ms. Allocated memory was 147.3 MB in the beginning and 274.2 MB in the end (delta: 126.9 MB). Free memory was 102.6 MB in the beginning and 144.0 MB in the end (delta: -41.4 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:28,569 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 21:34:28,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.23 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.6 MB in the beginning and 158.7 MB in the end (delta: -57.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:28,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.01 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:28,572 INFO L168 Benchmark]: Boogie Preprocessor took 26.30 ms. Allocated memory is still 203.4 MB. Free memory was 156.7 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:28,573 INFO L168 Benchmark]: RCFGBuilder took 497.62 ms. Allocated memory is still 203.4 MB. Free memory was 154.6 MB in the beginning and 128.0 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:28,573 INFO L168 Benchmark]: TraceAbstraction took 4592.84 ms. Allocated memory was 203.4 MB in the beginning and 274.2 MB in the end (delta: 70.8 MB). Free memory was 127.4 MB in the beginning and 144.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-10-21 21:34:28,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.23 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.6 MB in the beginning and 158.7 MB in the end (delta: -57.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.01 ms. Allocated memory is still 203.4 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.30 ms. Allocated memory is still 203.4 MB. Free memory was 156.7 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.62 ms. Allocated memory is still 203.4 MB. Free memory was 154.6 MB in the beginning and 128.0 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4592.84 ms. Allocated memory was 203.4 MB in the beginning and 274.2 MB in the end (delta: 70.8 MB). Free memory was 127.4 MB in the beginning and 144.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1123 VarBasedMoverChecksPositive, 105 VarBasedMoverChecksNegative, 65 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 96 PlacesBefore, 34 PlacesAfterwards, 98 TransitionsBefore, 33 TransitionsAfterwards, 1376 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 94 TotalNumberOfCompositions, 4493 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 90 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 125 SDtfs, 68 SDslu, 60 SDs, 0 SdLazy, 20 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...