/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:52:06,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:52:06,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:52:06,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:52:06,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:52:06,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:52:06,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:52:06,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:52:06,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:52:06,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:52:06,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:52:06,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:52:06,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:52:06,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:52:06,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:52:06,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:52:06,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:52:06,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:52:06,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:52:06,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:52:06,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:52:06,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:52:06,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:52:06,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:52:06,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 13:52:06,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:52:06,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:52:06,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:52:06,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:52:06,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:52:06,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:52:06,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:52:06,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:52:06,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:52:06,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:52:06,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:52:06,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:52:06,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:52:06,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:52:06,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:52:06,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:52:06,579 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:52:06,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:52:06,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:52:06,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:52:06,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:52:06,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:52:06,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:52:06,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:52:06,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:52:06,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:52:06,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:52:06,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:52:06,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:52:06,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:52:06,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:52:06,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:52:06,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:52:06,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:52:06,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:52:06,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:52:06,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:52:06,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:52:06,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:52:06,584 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:52:06,584 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:52:06,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:52:06,584 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:52:06,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:52:06,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:52:06,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:52:06,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:52:06,896 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:52:06,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-16 13:52:06,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64d502a44/71fbb8661e4c40c19f66d32695abd53c/FLAG97a73ede6 [2020-10-16 13:52:07,455 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:52:07,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-10-16 13:52:07,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64d502a44/71fbb8661e4c40c19f66d32695abd53c/FLAG97a73ede6 [2020-10-16 13:52:07,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64d502a44/71fbb8661e4c40c19f66d32695abd53c [2020-10-16 13:52:07,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:52:07,823 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:52:07,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:52:07,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:52:07,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:52:07,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:52:07" (1/1) ... [2020-10-16 13:52:07,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c3336e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:07, skipping insertion in model container [2020-10-16 13:52:07,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:52:07" (1/1) ... [2020-10-16 13:52:07,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:52:07,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:52:08,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:52:08,380 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:52:08,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:52:08,508 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:52:08,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08 WrapperNode [2020-10-16 13:52:08,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:52:08,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:52:08,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:52:08,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:52:08,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:52:08,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:52:08,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:52:08,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:52:08,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (1/1) ... [2020-10-16 13:52:08,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:52:08,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:52:08,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:52:08,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:52:08,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (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 13:52:08,656 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-10-16 13:52:08,656 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-10-16 13:52:08,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:52:08,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:52:08,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:52:08,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:52:08,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:52:08,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:52:08,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:52:08,665 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 13:52:09,094 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:52:09,095 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-16 13:52:09,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:52:09 BoogieIcfgContainer [2020-10-16 13:52:09,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:52:09,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:52:09,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:52:09,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:52:09,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:52:07" (1/3) ... [2020-10-16 13:52:09,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c936807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:52:09, skipping insertion in model container [2020-10-16 13:52:09,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:52:08" (2/3) ... [2020-10-16 13:52:09,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c936807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:52:09, skipping insertion in model container [2020-10-16 13:52:09,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:52:09" (3/3) ... [2020-10-16 13:52:09,105 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-10-16 13:52:09,116 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:52:09,117 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:52:09,125 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:52:09,126 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:52:09,151 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,151 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,151 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,152 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,152 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,152 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,153 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,153 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,153 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,153 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,154 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,154 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,154 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,154 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,155 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,155 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,155 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,156 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,156 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,156 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,156 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,157 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,157 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,157 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,158 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,158 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,158 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,158 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,159 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,159 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,162 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,163 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,163 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,163 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,164 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,164 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,164 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,164 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,164 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,165 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,165 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:52:09,168 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:52:09,180 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-16 13:52:09,197 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:52:09,197 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:52:09,197 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:52:09,197 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:52:09,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:52:09,198 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:52:09,198 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:52:09,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:52:09,210 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:52:09,211 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-16 13:52:09,213 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 87 transitions, 179 flow [2020-10-16 13:52:09,215 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 179 flow [2020-10-16 13:52:09,268 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-10-16 13:52:09,268 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:52:09,274 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-10-16 13:52:09,277 INFO L117 LiptonReduction]: Number of co-enabled transitions 2208 [2020-10-16 13:52:10,725 INFO L132 LiptonReduction]: Checked pairs total: 2932 [2020-10-16 13:52:10,726 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-16 13:52:10,732 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 17 transitions, 39 flow [2020-10-16 13:52:10,742 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 13:52:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 13:52:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 13:52:10,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:10,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 13:52:10,752 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:10,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash 11115006, now seen corresponding path program 1 times [2020-10-16 13:52:10,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:10,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996555624] [2020-10-16 13:52:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:10,947 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 13:52:10,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996555624] [2020-10-16 13:52:10,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:10,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:52:10,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1105401976] [2020-10-16 13:52:10,950 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:10,953 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:10,965 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 13:52:10,965 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:10,969 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:10,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:10,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:10,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:10,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:10,990 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 13:52:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,008 INFO L93 Difference]: Finished difference Result 74 states and 151 transitions. [2020-10-16 13:52:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:11,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-16 13:52:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,020 INFO L225 Difference]: With dead ends: 74 [2020-10-16 13:52:11,020 INFO L226 Difference]: Without dead ends: 41 [2020-10-16 13:52:11,022 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 13:52:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-16 13:52:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-10-16 13:52:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-16 13:52:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 49 transitions. [2020-10-16 13:52:11,059 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 49 transitions. Word has length 4 [2020-10-16 13:52:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,060 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 49 transitions. [2020-10-16 13:52:11,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 49 transitions. [2020-10-16 13:52:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 13:52:11,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 13:52:11,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:52:11,061 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:11,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,062 INFO L82 PathProgramCache]: Analyzing trace with hash 344559159, now seen corresponding path program 1 times [2020-10-16 13:52:11,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921571574] [2020-10-16 13:52:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,120 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 13:52:11,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921571574] [2020-10-16 13:52:11,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:52:11,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [668155363] [2020-10-16 13:52:11,122 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,122 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,123 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 13:52:11,123 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,123 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:11,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:11,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:11,126 INFO L87 Difference]: Start difference. First operand 26 states and 49 transitions. Second operand 3 states. [2020-10-16 13:52:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,132 INFO L93 Difference]: Finished difference Result 21 states and 38 transitions. [2020-10-16 13:52:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:11,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 13:52:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,133 INFO L225 Difference]: With dead ends: 21 [2020-10-16 13:52:11,133 INFO L226 Difference]: Without dead ends: 21 [2020-10-16 13:52:11,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:52:11,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-16 13:52:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-16 13:52:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-16 13:52:11,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 38 transitions. [2020-10-16 13:52:11,138 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 38 transitions. Word has length 5 [2020-10-16 13:52:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,142 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 38 transitions. [2020-10-16 13:52:11,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 38 transitions. [2020-10-16 13:52:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:52:11,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:11,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:52:11,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1030116261, now seen corresponding path program 1 times [2020-10-16 13:52:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138308282] [2020-10-16 13:52:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,197 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 13:52:11,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138308282] [2020-10-16 13:52:11,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:52:11,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1703149079] [2020-10-16 13:52:11,199 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,200 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,203 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 14 transitions. [2020-10-16 13:52:11,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,225 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:52:11,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:52:11,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:52:11,226 INFO L87 Difference]: Start difference. First operand 21 states and 38 transitions. Second operand 4 states. [2020-10-16 13:52:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,252 INFO L93 Difference]: Finished difference Result 24 states and 41 transitions. [2020-10-16 13:52:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:52:11,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 13:52:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,254 INFO L225 Difference]: With dead ends: 24 [2020-10-16 13:52:11,254 INFO L226 Difference]: Without dead ends: 21 [2020-10-16 13:52:11,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-16 13:52:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-16 13:52:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-16 13:52:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2020-10-16 13:52:11,259 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 8 [2020-10-16 13:52:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,259 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2020-10-16 13:52:11,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:52:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2020-10-16 13:52:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:52:11,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:11,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:52:11,260 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1870512364, now seen corresponding path program 1 times [2020-10-16 13:52:11,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171058725] [2020-10-16 13:52:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,298 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 13:52:11,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171058725] [2020-10-16 13:52:11,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:52:11,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [538032724] [2020-10-16 13:52:11,299 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,300 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,303 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-10-16 13:52:11,303 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,316 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:52:11,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:52:11,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:52:11,317 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 3 states. [2020-10-16 13:52:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,327 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2020-10-16 13:52:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:52:11,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:52:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,328 INFO L225 Difference]: With dead ends: 26 [2020-10-16 13:52:11,328 INFO L226 Difference]: Without dead ends: 21 [2020-10-16 13:52:11,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 13:52:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-16 13:52:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-16 13:52:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-16 13:52:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-10-16 13:52:11,332 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 9 [2020-10-16 13:52:11,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,332 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-10-16 13:52:11,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:52:11,333 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2020-10-16 13:52:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:52:11,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:11,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:52:11,334 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,334 INFO L82 PathProgramCache]: Analyzing trace with hash -434601411, now seen corresponding path program 1 times [2020-10-16 13:52:11,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222673922] [2020-10-16 13:52:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:52:11,382 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 13:52:11,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222673922] [2020-10-16 13:52:11,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:52:11,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:52:11,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [824310288] [2020-10-16 13:52:11,384 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:52:11,384 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:52:11,386 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-10-16 13:52:11,387 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:52:11,390 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:52:11,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:52:11,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:52:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:52:11,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:52:11,392 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 5 states. [2020-10-16 13:52:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:52:11,416 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-10-16 13:52:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:52:11,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 13:52:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:52:11,418 INFO L225 Difference]: With dead ends: 22 [2020-10-16 13:52:11,418 INFO L226 Difference]: Without dead ends: 19 [2020-10-16 13:52:11,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:52:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-16 13:52:11,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-16 13:52:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-16 13:52:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2020-10-16 13:52:11,421 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2020-10-16 13:52:11,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:52:11,422 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-10-16 13:52:11,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:52:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-10-16 13:52:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:52:11,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:52:11,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:52:11,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:52:11,423 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:52:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:52:11,423 INFO L82 PathProgramCache]: Analyzing trace with hash -987524719, now seen corresponding path program 2 times [2020-10-16 13:52:11,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:52:11,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76663951] [2020-10-16 13:52:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:52:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:11,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 13:52:11,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 13:52:11,493 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 13:52:11,493 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 13:52:11,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:52:11,495 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 13:52:11,503 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [321] [321] L674-->BCSP_PnpStopEXIT: Formula: (and (= |BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-907533103| 0) (not (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-907533103 0)) (= |BCSP_PnpStopThread1of1ForFork0_#res.base_Out-907533103| 0) (= ~stopped~0_Out-907533103 1) (= BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-907533103 |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-907533103|)) InVars {BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-907533103|} OutVars{BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond=BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond_Out-907533103, BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond=|BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond_In-907533103|, BCSP_PnpStopThread1of1ForFork0_#res.base=|BCSP_PnpStopThread1of1ForFork0_#res.base_Out-907533103|, ~stopped~0=~stopped~0_Out-907533103, BCSP_PnpStopThread1of1ForFork0_#res.offset=|BCSP_PnpStopThread1of1ForFork0_#res.offset_Out-907533103|} AuxVars[] AssignedVars[BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond, BCSP_PnpStopThread1of1ForFork0_#res.base, ~stopped~0, BCSP_PnpStopThread1of1ForFork0_#res.offset] because there is no mapped edge [2020-10-16 13:52:11,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:52:11 BasicIcfg [2020-10-16 13:52:11,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:52:11,540 INFO L168 Benchmark]: Toolchain (without parser) took 3715.10 ms. Allocated memory was 140.5 MB in the beginning and 247.5 MB in the end (delta: 107.0 MB). Free memory was 101.9 MB in the beginning and 211.5 MB in the end (delta: -109.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:52:11,541 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:52:11,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.28 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 160.1 MB in the end (delta: -58.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.09 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,551 INFO L168 Benchmark]: Boogie Preprocessor took 42.09 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,551 INFO L168 Benchmark]: RCFGBuilder took 494.87 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 130.8 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:52:11,553 INFO L168 Benchmark]: TraceAbstraction took 2439.00 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 130.1 MB in the beginning and 211.5 MB in the end (delta: -81.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:52:11,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.28 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 160.1 MB in the end (delta: -58.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.09 ms. Allocated memory is still 202.9 MB. Free memory was 160.1 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.09 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 156.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.87 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 130.8 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2439.00 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 130.1 MB in the beginning and 211.5 MB in the end (delta: -81.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1298 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 37 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 85 PlacesBefore, 18 PlacesAfterwards, 87 TransitionsBefore, 17 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 2932 MoverChecksTotal - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L686] 0 volatile int stoppingFlag; [L687] 0 volatile int pendingIo; [L688] 0 volatile int stoppingEvent; [L689] 0 volatile int stopped; [L729] 0 pthread_t t; [L730] 0 pendingIo = 1 [L731] 0 stoppingFlag = 0 [L732] 0 stoppingEvent = 0 [L733] 0 stopped = 0 [L734] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L713] 0 int status; [L691] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L722] 1 stoppingFlag = 1 [L706] 1 int pending; [L700] 1 pendingIo-- [L701] 1 int tmp = pendingIo; [L703] 1 return tmp; [L694] 0 pendingIo = pendingIo + 1 [L696] 0 return 0; [L707] 1 pending = dec() [L708] COND TRUE 1 pending == 0 [L709] 1 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L714] 0 status = BCSP_IoIncrement() [L715] COND TRUE 0 status == 0 [L678] COND TRUE 0 !(cond) [L679] 0 __VERIFIER_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 70 SDtfs, 23 SDslu, 47 SDs, 0 SdLazy, 27 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 482 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 incorrect! Received shutdown request...