/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-ext/19_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 10:56:01,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 10:56:01,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 10:56:01,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 10:56:01,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 10:56:01,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 10:56:01,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 10:56:01,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 10:56:01,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 10:56:01,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 10:56:01,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 10:56:01,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 10:56:01,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 10:56:01,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 10:56:01,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 10:56:01,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 10:56:01,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 10:56:01,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 10:56:01,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 10:56:01,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 10:56:01,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 10:56:01,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 10:56:01,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 10:56:01,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 10:56:01,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 10:56:01,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 10:56:01,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 10:56:01,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 10:56:01,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 10:56:01,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 10:56:01,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 10:56:01,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 10:56:01,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 10:56:01,419 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 10:56:01,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 10:56:01,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 10:56:01,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 10:56:01,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 10:56:01,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 10:56:01,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 10:56:01,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 10:56:01,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 10:56:01,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 10:56:01,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 10:56:01,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 10:56:01,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 10:56:01,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 10:56:01,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 10:56:01,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 10:56:01,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 10:56:01,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:56:01,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 10:56:01,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 10:56:01,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 10:56:01,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 10:56:01,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 10:56:01,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 10:56:01,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 10:56:01,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 10:56:01,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 10:56:01,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 10:56:01,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 10:56:01,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 10:56:01,730 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 10:56:01,731 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-16 10:56:01,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7d780f7d/f947752fcd0041858ef06dc77ebbe484/FLAGcc2c35ee0 [2020-10-16 10:56:02,380 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 10:56:02,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-16 10:56:02,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7d780f7d/f947752fcd0041858ef06dc77ebbe484/FLAGcc2c35ee0 [2020-10-16 10:56:02,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7d780f7d/f947752fcd0041858ef06dc77ebbe484 [2020-10-16 10:56:02,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 10:56:02,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 10:56:02,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 10:56:02,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 10:56:02,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 10:56:02,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:56:02" (1/1) ... [2020-10-16 10:56:02,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32dcae2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:02, skipping insertion in model container [2020-10-16 10:56:02,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:56:02" (1/1) ... [2020-10-16 10:56:02,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 10:56:02,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 10:56:03,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:56:03,205 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 10:56:03,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:56:03,319 INFO L208 MainTranslator]: Completed translation [2020-10-16 10:56:03,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03 WrapperNode [2020-10-16 10:56:03,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 10:56:03,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 10:56:03,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 10:56:03,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 10:56:03,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 10:56:03,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 10:56:03,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 10:56:03,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 10:56:03,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (1/1) ... [2020-10-16 10:56:03,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 10:56:03,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 10:56:03,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 10:56:03,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 10:56:03,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (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 [2020-10-16 10:56:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 10:56:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 10:56:03,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 10:56:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 10:56:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 10:56:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 10:56:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 10:56:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 10:56:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 10:56:03,467 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 10:56:04,320 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 10:56:04,321 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 10:56:04,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:56:04 BoogieIcfgContainer [2020-10-16 10:56:04,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 10:56:04,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 10:56:04,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 10:56:04,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 10:56:04,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:56:02" (1/3) ... [2020-10-16 10:56:04,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae9291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:56:04, skipping insertion in model container [2020-10-16 10:56:04,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:03" (2/3) ... [2020-10-16 10:56:04,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae9291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:56:04, skipping insertion in model container [2020-10-16 10:56:04,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:56:04" (3/3) ... [2020-10-16 10:56:04,331 INFO L111 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2020-10-16 10:56:04,342 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 10:56:04,343 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 10:56:04,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 10:56:04,350 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 10:56:04,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,374 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,374 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,374 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,375 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,377 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,385 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,385 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:04,390 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 10:56:04,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 10:56:04,425 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 10:56:04,426 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 10:56:04,426 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 10:56:04,426 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 10:56:04,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 10:56:04,426 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 10:56:04,427 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 10:56:04,427 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 10:56:04,438 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 10:56:04,441 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 54 transitions, 113 flow [2020-10-16 10:56:04,444 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 54 transitions, 113 flow [2020-10-16 10:56:04,446 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-10-16 10:56:04,478 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 10:56:04,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 10:56:04,483 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-16 10:56:04,485 INFO L117 LiptonReduction]: Number of co-enabled transitions 704 [2020-10-16 10:56:06,860 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-16 10:56:06,974 INFO L132 LiptonReduction]: Checked pairs total: 2268 [2020-10-16 10:56:06,974 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 10:56:06,981 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 20 transitions, 45 flow [2020-10-16 10:56:06,997 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 65 states. [2020-10-16 10:56:07,000 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-16 10:56:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 10:56:07,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:07,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 10:56:07,032 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:07,039 INFO L82 PathProgramCache]: Analyzing trace with hash 410803717, now seen corresponding path program 1 times [2020-10-16 10:56:07,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:07,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324746420] [2020-10-16 10:56:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:07,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324746420] [2020-10-16 10:56:07,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:07,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:07,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277497909] [2020-10-16 10:56:07,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:07,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:07,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:07,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:07,348 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-10-16 10:56:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:07,378 INFO L93 Difference]: Finished difference Result 65 states and 121 transitions. [2020-10-16 10:56:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:07,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 10:56:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:07,391 INFO L225 Difference]: With dead ends: 65 [2020-10-16 10:56:07,391 INFO L226 Difference]: Without dead ends: 59 [2020-10-16 10:56:07,393 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 [2020-10-16 10:56:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-16 10:56:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-16 10:56:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-16 10:56:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 107 transitions. [2020-10-16 10:56:07,435 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 107 transitions. Word has length 5 [2020-10-16 10:56:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:07,435 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 107 transitions. [2020-10-16 10:56:07,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 107 transitions. [2020-10-16 10:56:07,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 10:56:07,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:07,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 10:56:07,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 10:56:07,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:07,438 INFO L82 PathProgramCache]: Analyzing trace with hash 410821178, now seen corresponding path program 1 times [2020-10-16 10:56:07,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:07,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787558230] [2020-10-16 10:56:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:07,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787558230] [2020-10-16 10:56:07,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:07,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:07,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405674164] [2020-10-16 10:56:07,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:07,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:07,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:07,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:07,486 INFO L87 Difference]: Start difference. First operand 59 states and 107 transitions. Second operand 3 states. [2020-10-16 10:56:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:07,517 INFO L93 Difference]: Finished difference Result 62 states and 103 transitions. [2020-10-16 10:56:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:07,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 10:56:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:07,519 INFO L225 Difference]: With dead ends: 62 [2020-10-16 10:56:07,519 INFO L226 Difference]: Without dead ends: 56 [2020-10-16 10:56:07,521 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 [2020-10-16 10:56:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-16 10:56:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-16 10:56:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 10:56:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 90 transitions. [2020-10-16 10:56:07,537 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 90 transitions. Word has length 5 [2020-10-16 10:56:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:07,537 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 90 transitions. [2020-10-16 10:56:07,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 90 transitions. [2020-10-16 10:56:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 10:56:07,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:07,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:07,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 10:56:07,539 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:07,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1895073623, now seen corresponding path program 1 times [2020-10-16 10:56:07,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:07,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684492581] [2020-10-16 10:56:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:07,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684492581] [2020-10-16 10:56:07,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:07,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:07,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050932207] [2020-10-16 10:56:07,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:07,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:07,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:07,616 INFO L87 Difference]: Start difference. First operand 52 states and 90 transitions. Second operand 3 states. [2020-10-16 10:56:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:07,631 INFO L93 Difference]: Finished difference Result 49 states and 80 transitions. [2020-10-16 10:56:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:07,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 10:56:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:07,633 INFO L225 Difference]: With dead ends: 49 [2020-10-16 10:56:07,633 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 10:56:07,634 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 [2020-10-16 10:56:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 10:56:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 10:56:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 10:56:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-16 10:56:07,638 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 8 [2020-10-16 10:56:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:07,639 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-16 10:56:07,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-16 10:56:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:56:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:07,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:07,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 10:56:07,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash 99658834, now seen corresponding path program 1 times [2020-10-16 10:56:07,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:07,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625858547] [2020-10-16 10:56:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:07,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625858547] [2020-10-16 10:56:07,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:07,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:07,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938822213] [2020-10-16 10:56:07,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:07,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:07,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:07,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:07,688 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 3 states. [2020-10-16 10:56:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:07,696 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2020-10-16 10:56:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:07,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 10:56:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:07,698 INFO L225 Difference]: With dead ends: 31 [2020-10-16 10:56:07,698 INFO L226 Difference]: Without dead ends: 28 [2020-10-16 10:56:07,698 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 [2020-10-16 10:56:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-16 10:56:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-16 10:56:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-16 10:56:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-10-16 10:56:07,702 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 10 [2020-10-16 10:56:07,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:07,703 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-10-16 10:56:07,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-10-16 10:56:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:56:07,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:07,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:07,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 10:56:07,704 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:07,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:07,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1599422474, now seen corresponding path program 1 times [2020-10-16 10:56:07,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:07,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787787311] [2020-10-16 10:56:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:07,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787787311] [2020-10-16 10:56:07,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:07,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:07,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289729692] [2020-10-16 10:56:07,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:07,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:07,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:07,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:07,767 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 3 states. [2020-10-16 10:56:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:07,779 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-10-16 10:56:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:07,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 10:56:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:07,780 INFO L225 Difference]: With dead ends: 9 [2020-10-16 10:56:07,781 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 10:56:07,781 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 [2020-10-16 10:56:07,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 10:56:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 10:56:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 10:56:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 10:56:07,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-16 10:56:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:07,782 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 10:56:07,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 10:56:07,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 10:56:07,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 10:56:07,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:56:07 BasicIcfg [2020-10-16 10:56:07,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 10:56:07,789 INFO L168 Benchmark]: Toolchain (without parser) took 5123.89 ms. Allocated memory was 139.5 MB in the beginning and 293.1 MB in the end (delta: 153.6 MB). Free memory was 100.9 MB in the beginning and 189.1 MB in the end (delta: -88.3 MB). Peak memory consumption was 65.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:07,790 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 10:56:07,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.48 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:07,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.59 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 159.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:07,793 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:07,794 INFO L168 Benchmark]: RCFGBuilder took 923.68 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 157.4 MB in the beginning and 204.8 MB in the end (delta: -47.4 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:07,795 INFO L168 Benchmark]: TraceAbstraction took 3463.13 ms. Allocated memory was 235.9 MB in the beginning and 293.1 MB in the end (delta: 57.1 MB). Free memory was 204.8 MB in the beginning and 189.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:07,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.48 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.59 ms. Allocated memory is still 202.9 MB. Free memory was 161.5 MB in the beginning and 159.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 923.68 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 157.4 MB in the beginning and 204.8 MB in the end (delta: -47.4 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3463.13 ms. Allocated memory was 235.9 MB in the beginning and 293.1 MB in the end (delta: 57.1 MB). Free memory was 204.8 MB in the beginning and 189.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 506 VarBasedMoverChecksPositive, 93 VarBasedMoverChecksNegative, 41 SemBasedMoverChecksPositive, 52 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 93 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 54 PlacesBefore, 21 PlacesAfterwards, 54 TransitionsBefore, 20 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 1 ChoiceCompositions, 50 TotalNumberOfCompositions, 2268 MoverChecksTotal - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 711]: 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 2 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 77 SDtfs, 35 SDslu, 30 SDs, 0 SdLazy, 20 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 397 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...