/usr/bin/java -Xmx16000000000 -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/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:51:01,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:51:01,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:51:01,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:51:01,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:51:01,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:51:01,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:51:01,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:51:01,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:51:01,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:51:01,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:51:01,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:51:01,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:51:01,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:51:01,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:51:01,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:51:01,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:51:01,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:51:01,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:51:01,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:51:01,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:51:01,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:51:01,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:51:01,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:51:01,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 14:51:01,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:51:01,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:51:01,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:51:01,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:51:01,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:51:01,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:51:01,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:51:01,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:51:01,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:51:01,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:51:01,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:51:01,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 14:51:01,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:51:01,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:51:01,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:51:01,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:51:01,629 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:51:01,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:51:01,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:51:01,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:51:01,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:51:01,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:51:01,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:51:01,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:51:01,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:51:01,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:51:01,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:51:01,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:51:01,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:51:01,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:51:01,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:51:01,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:51:01,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:51:01,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:51:01,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:51:01,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:51:01,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:51:01,634 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 14:51:01,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:51:01,634 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 14:51:01,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 14:51:01,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:51:01,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:51:01,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:51:01,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:51:01,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:51:01,962 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:51:01,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-09 14:51:02,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d432285/a72db4b07461416885308d78a3672d36/FLAG5a5e6fb49 [2020-10-09 14:51:02,513 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:51:02,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-09 14:51:02,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d432285/a72db4b07461416885308d78a3672d36/FLAG5a5e6fb49 [2020-10-09 14:51:02,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d432285/a72db4b07461416885308d78a3672d36 [2020-10-09 14:51:02,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:51:02,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:51:02,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:51:02,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:51:02,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:51:02,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:51:02" (1/1) ... [2020-10-09 14:51:02,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e993d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:02, skipping insertion in model container [2020-10-09 14:51:02,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:51:02" (1/1) ... [2020-10-09 14:51:02,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:51:02,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:51:03,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:51:03,400 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:51:03,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:51:03,506 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:51:03,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03 WrapperNode [2020-10-09 14:51:03,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:51:03,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:51:03,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:51:03,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:51:03,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:51:03,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:51:03,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:51:03,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:51:03,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... [2020-10-09 14:51:03,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:51:03,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:51:03,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:51:03,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:51:03,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:51:03,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 14:51:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-09 14:51:03,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-09 14:51:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-09 14:51:03,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-09 14:51:03,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:51:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:51:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:51:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:51:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:51:03,640 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:51:03,969 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:51:03,970 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 14:51:03,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:51:03 BoogieIcfgContainer [2020-10-09 14:51:03,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:51:03,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:51:03,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:51:03,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:51:03,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:51:02" (1/3) ... [2020-10-09 14:51:03,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d61fa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:51:03, skipping insertion in model container [2020-10-09 14:51:03,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:51:03" (2/3) ... [2020-10-09 14:51:03,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d61fa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:51:03, skipping insertion in model container [2020-10-09 14:51:03,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:51:03" (3/3) ... [2020-10-09 14:51:03,979 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-09 14:51:03,988 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:51:03,995 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-09 14:51:03,996 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:51:04,018 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,019 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,019 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,019 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,020 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,020 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,035 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:51:04,059 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-09 14:51:04,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:51:04,076 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 14:51:04,076 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:51:04,076 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:51:04,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:51:04,077 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:51:04,077 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:51:04,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:51:04,088 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-09 14:51:04,128 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-09 14:51:04,128 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:51:04,136 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-10-09 14:51:04,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 62 transitions, 146 flow [2020-10-09 14:51:04,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 50 transitions, 112 flow [2020-10-09 14:51:04,153 INFO L129 PetriNetUnfolder]: 5/33 cut-off events. [2020-10-09 14:51:04,153 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:51:04,153 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:51:04,154 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:51:04,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:51:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:51:04,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1574270369, now seen corresponding path program 1 times [2020-10-09 14:51:04,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:51:04,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356680067] [2020-10-09 14:51:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 14:51:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:51:04,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-09 14:51:04,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:51:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:04,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:51:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:04,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356680067] [2020-10-09 14:51:04,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:51:04,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-09 14:51:04,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973395093] [2020-10-09 14:51:04,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 14:51:04,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:51:04,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 14:51:04,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 14:51:04,313 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 62 [2020-10-09 14:51:04,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 112 flow. Second operand 2 states. [2020-10-09 14:51:04,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:51:04,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 62 [2020-10-09 14:51:04,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:51:04,336 INFO L129 PetriNetUnfolder]: 2/48 cut-off events. [2020-10-09 14:51:04,336 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-09 14:51:04,337 INFO L80 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 48 events. 2/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 4/48 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-09 14:51:04,339 INFO L132 encePairwiseOnDemand]: 58/62 looper letters, 0 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2020-10-09 14:51:04,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 104 flow [2020-10-09 14:51:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 14:51:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-09 14:51:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 120 transitions. [2020-10-09 14:51:04,353 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.967741935483871 [2020-10-09 14:51:04,354 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 120 transitions. [2020-10-09 14:51:04,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 120 transitions. [2020-10-09 14:51:04,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:51:04,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 120 transitions. [2020-10-09 14:51:04,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-09 14:51:04,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-09 14:51:04,367 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-09 14:51:04,369 INFO L185 Difference]: Start difference. First operand has 50 places, 50 transitions, 112 flow. Second operand 2 states and 120 transitions. [2020-10-09 14:51:04,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 104 flow [2020-10-09 14:51:04,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 96 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 14:51:04,377 INFO L241 Difference]: Finished difference. Result has 47 places, 46 transitions, 96 flow [2020-10-09 14:51:04,380 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2020-10-09 14:51:04,381 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2020-10-09 14:51:04,381 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 96 flow [2020-10-09 14:51:04,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 14:51:04,382 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:51:04,382 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:51:04,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 14:51:04,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:51:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:51:04,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1574240578, now seen corresponding path program 1 times [2020-10-09 14:51:04,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:51:04,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437028871] [2020-10-09 14:51:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 14:51:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:51:04,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 14:51:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:51:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:04,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:51:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:04,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437028871] [2020-10-09 14:51:04,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:51:04,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 14:51:04,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479041464] [2020-10-09 14:51:04,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:51:04,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:51:04,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:51:04,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:51:04,768 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 62 [2020-10-09 14:51:04,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 96 flow. Second operand 3 states. [2020-10-09 14:51:04,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:51:04,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 62 [2020-10-09 14:51:04,772 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:51:04,834 INFO L129 PetriNetUnfolder]: 9/99 cut-off events. [2020-10-09 14:51:04,835 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:51:04,838 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 99 events. 9/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 324 event pairs, 3 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 127. Up to 17 conditions per place. [2020-10-09 14:51:04,839 INFO L132 encePairwiseOnDemand]: 55/62 looper letters, 5 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2020-10-09 14:51:04,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 122 flow [2020-10-09 14:51:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:51:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 14:51:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2020-10-09 14:51:04,848 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2020-10-09 14:51:04,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2020-10-09 14:51:04,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2020-10-09 14:51:04,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:51:04,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2020-10-09 14:51:04,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 14:51:04,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 14:51:04,855 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 14:51:04,855 INFO L185 Difference]: Start difference. First operand has 47 places, 46 transitions, 96 flow. Second operand 3 states and 165 transitions. [2020-10-09 14:51:04,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 122 flow [2020-10-09 14:51:04,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-09 14:51:04,866 INFO L241 Difference]: Finished difference. Result has 51 places, 49 transitions, 132 flow [2020-10-09 14:51:04,866 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2020-10-09 14:51:04,867 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2020-10-09 14:51:04,867 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 132 flow [2020-10-09 14:51:04,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:51:04,868 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:51:04,868 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:51:05,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 14:51:05,080 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:51:05,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:51:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash -145909775, now seen corresponding path program 1 times [2020-10-09 14:51:05,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:51:05,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345631822] [2020-10-09 14:51:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 14:51:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:51:05,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 14:51:05,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:51:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:05,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:51:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:05,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345631822] [2020-10-09 14:51:05,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:51:05,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 14:51:05,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309660293] [2020-10-09 14:51:05,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:51:05,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:51:05,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:51:05,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:51:05,193 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 62 [2020-10-09 14:51:05,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 132 flow. Second operand 3 states. [2020-10-09 14:51:05,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:51:05,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 62 [2020-10-09 14:51:05,206 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:51:05,235 INFO L129 PetriNetUnfolder]: 4/86 cut-off events. [2020-10-09 14:51:05,236 INFO L130 PetriNetUnfolder]: For 16/22 co-relation queries the response was YES. [2020-10-09 14:51:05,236 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 86 events. 4/86 cut-off events. For 16/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 254 event pairs, 2 based on Foata normal form. 6/88 useless extension candidates. Maximal degree in co-relation 132. Up to 11 conditions per place. [2020-10-09 14:51:05,237 INFO L132 encePairwiseOnDemand]: 58/62 looper letters, 6 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2020-10-09 14:51:05,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 136 flow [2020-10-09 14:51:05,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:51:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 14:51:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2020-10-09 14:51:05,239 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8763440860215054 [2020-10-09 14:51:05,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 163 transitions. [2020-10-09 14:51:05,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 163 transitions. [2020-10-09 14:51:05,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:51:05,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 163 transitions. [2020-10-09 14:51:05,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 14:51:05,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 14:51:05,242 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 14:51:05,242 INFO L185 Difference]: Start difference. First operand has 51 places, 49 transitions, 132 flow. Second operand 3 states and 163 transitions. [2020-10-09 14:51:05,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 136 flow [2020-10-09 14:51:05,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 14:51:05,245 INFO L241 Difference]: Finished difference. Result has 51 places, 47 transitions, 118 flow [2020-10-09 14:51:05,245 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2020-10-09 14:51:05,245 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2020-10-09 14:51:05,245 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 118 flow [2020-10-09 14:51:05,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:51:05,246 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:51:05,246 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:51:05,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 14:51:05,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:51:05,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:51:05,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1952726074, now seen corresponding path program 1 times [2020-10-09 14:51:05,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:51:05,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951775925] [2020-10-09 14:51:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 14:51:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:51:05,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 14:51:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:51:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:05,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:51:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:05,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951775925] [2020-10-09 14:51:05,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:51:05,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-09 14:51:05,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110955703] [2020-10-09 14:51:05,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 14:51:05,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:51:05,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 14:51:05,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 14:51:05,602 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 62 [2020-10-09 14:51:05,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 118 flow. Second operand 4 states. [2020-10-09 14:51:05,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:51:05,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 62 [2020-10-09 14:51:05,603 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:51:05,642 INFO L129 PetriNetUnfolder]: 18/129 cut-off events. [2020-10-09 14:51:05,642 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-09 14:51:05,643 INFO L80 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 129 events. 18/129 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 456 event pairs, 2 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 197. Up to 14 conditions per place. [2020-10-09 14:51:05,644 INFO L132 encePairwiseOnDemand]: 55/62 looper letters, 9 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2020-10-09 14:51:05,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 164 flow [2020-10-09 14:51:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 14:51:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-09 14:51:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2020-10-09 14:51:05,646 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8629032258064516 [2020-10-09 14:51:05,647 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 214 transitions. [2020-10-09 14:51:05,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 214 transitions. [2020-10-09 14:51:05,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:51:05,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 214 transitions. [2020-10-09 14:51:05,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-09 14:51:05,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-09 14:51:05,649 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-09 14:51:05,649 INFO L185 Difference]: Start difference. First operand has 51 places, 47 transitions, 118 flow. Second operand 4 states and 214 transitions. [2020-10-09 14:51:05,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 164 flow [2020-10-09 14:51:05,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 14:51:05,653 INFO L241 Difference]: Finished difference. Result has 56 places, 52 transitions, 162 flow [2020-10-09 14:51:05,653 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2020-10-09 14:51:05,653 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2020-10-09 14:51:05,653 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 162 flow [2020-10-09 14:51:05,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 14:51:05,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:51:05,654 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:51:05,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 14:51:05,865 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:51:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:51:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash -749029440, now seen corresponding path program 2 times [2020-10-09 14:51:05,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:51:05,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440675080] [2020-10-09 14:51:05,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 14:51:05,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 14:51:05,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:51:05,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-09 14:51:05,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:51:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:05,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:51:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:51:05,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440675080] [2020-10-09 14:51:05,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:51:05,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-09 14:51:05,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373953947] [2020-10-09 14:51:05,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 14:51:05,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:51:05,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 14:51:05,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 14:51:05,993 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 62 [2020-10-09 14:51:05,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 162 flow. Second operand 4 states. [2020-10-09 14:51:05,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:51:05,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 62 [2020-10-09 14:51:05,994 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:51:06,016 INFO L129 PetriNetUnfolder]: 20/97 cut-off events. [2020-10-09 14:51:06,016 INFO L130 PetriNetUnfolder]: For 24/25 co-relation queries the response was YES. [2020-10-09 14:51:06,017 INFO L80 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 97 events. 20/97 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 227 event pairs, 1 based on Foata normal form. 5/99 useless extension candidates. Maximal degree in co-relation 202. Up to 19 conditions per place. [2020-10-09 14:51:06,017 INFO L132 encePairwiseOnDemand]: 55/62 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2020-10-09 14:51:06,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 214 flow [2020-10-09 14:51:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 14:51:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-09 14:51:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2020-10-09 14:51:06,019 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8629032258064516 [2020-10-09 14:51:06,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 214 transitions. [2020-10-09 14:51:06,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 214 transitions. [2020-10-09 14:51:06,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:51:06,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 214 transitions. [2020-10-09 14:51:06,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-09 14:51:06,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-09 14:51:06,022 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-09 14:51:06,022 INFO L185 Difference]: Start difference. First operand has 56 places, 52 transitions, 162 flow. Second operand 4 states and 214 transitions. [2020-10-09 14:51:06,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 214 flow [2020-10-09 14:51:06,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 208 flow, removed 3 selfloop flow, removed 0 redundant places. [2020-10-09 14:51:06,025 INFO L241 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2020-10-09 14:51:06,025 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2020-10-09 14:51:06,025 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2020-10-09 14:51:06,026 INFO L481 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2020-10-09 14:51:06,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 14:51:06,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 14:51:06,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:51:06 BasicIcfg [2020-10-09 14:51:06,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:51:06,248 INFO L168 Benchmark]: Toolchain (without parser) took 3461.20 ms. Allocated memory was 248.5 MB in the beginning and 354.4 MB in the end (delta: 105.9 MB). Free memory was 203.0 MB in the beginning and 248.6 MB in the end (delta: -45.7 MB). Peak memory consumption was 60.2 MB. Max. memory is 14.2 GB. [2020-10-09 14:51:06,249 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 248.5 MB. Free memory was 226.6 MB in the beginning and 225.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-09 14:51:06,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.20 ms. Allocated memory was 248.5 MB in the beginning and 305.1 MB in the end (delta: 56.6 MB). Free memory was 203.0 MB in the beginning and 263.1 MB in the end (delta: -60.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:51:06,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 305.1 MB. Free memory was 263.1 MB in the beginning and 260.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-09 14:51:06,252 INFO L168 Benchmark]: Boogie Preprocessor took 26.13 ms. Allocated memory is still 305.1 MB. Free memory was 260.5 MB in the beginning and 259.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-09 14:51:06,253 INFO L168 Benchmark]: RCFGBuilder took 393.83 ms. Allocated memory is still 305.1 MB. Free memory was 259.7 MB in the beginning and 238.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 14.2 GB. [2020-10-09 14:51:06,254 INFO L168 Benchmark]: TraceAbstraction took 2273.35 ms. Allocated memory was 305.1 MB in the beginning and 354.4 MB in the end (delta: 49.3 MB). Free memory was 238.6 MB in the beginning and 248.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 39.3 MB. Max. memory is 14.2 GB. [2020-10-09 14:51:06,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 248.5 MB. Free memory was 226.6 MB in the beginning and 225.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 719.20 ms. Allocated memory was 248.5 MB in the beginning and 305.1 MB in the end (delta: 56.6 MB). Free memory was 203.0 MB in the beginning and 263.1 MB in the end (delta: -60.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 305.1 MB. Free memory was 263.1 MB in the beginning and 260.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.13 ms. Allocated memory is still 305.1 MB. Free memory was 260.5 MB in the beginning and 259.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * RCFGBuilder took 393.83 ms. Allocated memory is still 305.1 MB. Free memory was 259.7 MB in the beginning and 238.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2273.35 ms. Allocated memory was 305.1 MB in the beginning and 354.4 MB in the end (delta: 49.3 MB). Free memory was 238.6 MB in the beginning and 248.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 39.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 24 SDslu, 6 SDs, 0 SdLazy, 47 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 7652 SizeOfPredicates, 4 NumberOfNonLiveVariables, 316 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...