/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:27:42,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:27:42,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:27:43,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:27:43,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:27:43,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:27:43,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:27:43,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:27:43,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:27:43,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:27:43,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:27:43,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:27:43,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:27:43,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:27:43,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:27:43,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:27:43,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:27:43,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:27:43,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:27:43,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:27:43,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:27:43,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:27:43,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:27:43,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:27:43,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 03:27:43,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:27:43,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:27:43,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:27:43,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:27:43,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:27:43,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:27:43,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:27:43,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:27:43,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:27:43,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:27:43,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:27:43,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 03:27:43,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:27:43,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:27:43,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:27:43,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:27:43,060 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:27:43,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:27:43,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:27:43,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:27:43,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:27:43,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:27:43,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:27:43,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:27:43,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:27:43,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:27:43,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:27:43,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:27:43,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:27:43,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:27:43,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:27:43,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:27:43,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:27:43,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:27:43,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:27:43,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:27:43,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:27:43,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:27:43,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:27:43,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:27:43,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:27:43,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:27:43,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:27:43,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:27:43,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:27:43,378 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:27:43,379 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 03:27:43,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3368d11/121c583cf7c74f48b1b0d427516d156f/FLAG20f374c22 [2020-10-16 03:27:43,998 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:27:43,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-16 03:27:44,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3368d11/121c583cf7c74f48b1b0d427516d156f/FLAG20f374c22 [2020-10-16 03:27:44,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab3368d11/121c583cf7c74f48b1b0d427516d156f [2020-10-16 03:27:44,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:27:44,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:27:44,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:27:44,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:27:44,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:27:44,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ce3e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44, skipping insertion in model container [2020-10-16 03:27:44,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:27:44,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:27:44,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:27:44,748 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:27:44,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:27:44,914 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:27:44,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44 WrapperNode [2020-10-16 03:27:44,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:27:44,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:27:44,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:27:44,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:27:44,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:27:44,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:27:44,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:27:44,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:27:44,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:44,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (1/1) ... [2020-10-16 03:27:45,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:27:45,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:27:45,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:27:45,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:27:45,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (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 [2020-10-16 03:27:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:27:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 03:27:45,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 03:27:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 03:27:45,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 03:27:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:27:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:27:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:27:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:27:45,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:27:45,065 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 03:27:45,397 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:27:45,397 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 03:27:45,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:27:45 BoogieIcfgContainer [2020-10-16 03:27:45,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:27:45,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:27:45,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:27:45,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:27:45,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:27:44" (1/3) ... [2020-10-16 03:27:45,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1d854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:27:45, skipping insertion in model container [2020-10-16 03:27:45,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:44" (2/3) ... [2020-10-16 03:27:45,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1d854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:27:45, skipping insertion in model container [2020-10-16 03:27:45,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:27:45" (3/3) ... [2020-10-16 03:27:45,407 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-16 03:27:45,418 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:27:45,425 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 03:27:45,426 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:27:45,452 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,452 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,453 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,453 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,454 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,454 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,456 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,460 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,461 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,461 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,461 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,467 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,467 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,467 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,468 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:45,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 03:27:45,514 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:27:45,514 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:27:45,515 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:27:45,515 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:27:45,515 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:27:45,515 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:27:45,515 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:27:45,515 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:27:45,527 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-10-16 03:27:45,562 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-10-16 03:27:45,563 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:27:45,568 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. [2020-10-16 03:27:45,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 62 transitions, 146 flow [2020-10-16 03:27:45,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 50 transitions, 112 flow [2020-10-16 03:27:45,577 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:27:45,580 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 50 transitions, 112 flow [2020-10-16 03:27:45,583 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 50 transitions, 112 flow [2020-10-16 03:27:45,584 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 50 places, 50 transitions, 112 flow [2020-10-16 03:27:45,598 INFO L129 PetriNetUnfolder]: 6/52 cut-off events. [2020-10-16 03:27:45,599 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:27:45,600 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 6/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2020-10-16 03:27:45,602 INFO L117 LiptonReduction]: Number of co-enabled transitions 756 [2020-10-16 03:27:46,418 INFO L132 LiptonReduction]: Checked pairs total: 1927 [2020-10-16 03:27:46,418 INFO L134 LiptonReduction]: Total number of compositions: 28 [2020-10-16 03:27:46,421 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 846 [2020-10-16 03:27:46,429 INFO L129 PetriNetUnfolder]: 2/13 cut-off events. [2020-10-16 03:27:46,429 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:27:46,429 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:46,430 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 03:27:46,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:46,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1551738424, now seen corresponding path program 1 times [2020-10-16 03:27:46,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:46,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821613955] [2020-10-16 03:27:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:46,619 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 03:27:46,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821613955] [2020-10-16 03:27:46,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:46,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:27:46,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401112082] [2020-10-16 03:27:46,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 03:27:46,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:46,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 03:27:46,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 03:27:46,647 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 90 [2020-10-16 03:27:46,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 68 flow. Second operand 2 states. [2020-10-16 03:27:46,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:46,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 90 [2020-10-16 03:27:46,650 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:46,661 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2020-10-16 03:27:46,662 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:27:46,663 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2020-10-16 03:27:46,664 INFO L132 encePairwiseOnDemand]: 87/90 looper letters, 0 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2020-10-16 03:27:46,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 62 flow [2020-10-16 03:27:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 03:27:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 03:27:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2020-10-16 03:27:46,679 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9055555555555556 [2020-10-16 03:27:46,680 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2020-10-16 03:27:46,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2020-10-16 03:27:46,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:46,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2020-10-16 03:27:46,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 03:27:46,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 03:27:46,694 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 03:27:46,696 INFO L185 Difference]: Start difference. First operand has 29 places, 28 transitions, 68 flow. Second operand 2 states and 163 transitions. [2020-10-16 03:27:46,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 62 flow [2020-10-16 03:27:46,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 03:27:46,703 INFO L241 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2020-10-16 03:27:46,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2020-10-16 03:27:46,707 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2020-10-16 03:27:46,707 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2020-10-16 03:27:46,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 03:27:46,707 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:46,707 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:46,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:27:46,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash -859277329, now seen corresponding path program 1 times [2020-10-16 03:27:46,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:46,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016723582] [2020-10-16 03:27:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:46,808 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 03:27:46,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016723582] [2020-10-16 03:27:46,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:46,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:27:46,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508751794] [2020-10-16 03:27:46,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:46,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:46,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:46,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:46,818 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 90 [2020-10-16 03:27:46,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states. [2020-10-16 03:27:46,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:46,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 90 [2020-10-16 03:27:46,819 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:46,885 INFO L129 PetriNetUnfolder]: 9/68 cut-off events. [2020-10-16 03:27:46,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:27:46,888 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 68 events. 9/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 227 event pairs, 2 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 98. Up to 18 conditions per place. [2020-10-16 03:27:46,890 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 7 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2020-10-16 03:27:46,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 80 flow [2020-10-16 03:27:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2020-10-16 03:27:46,900 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2020-10-16 03:27:46,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2020-10-16 03:27:46,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2020-10-16 03:27:46,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:46,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2020-10-16 03:27:46,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:46,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:46,909 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:46,909 INFO L185 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states and 207 transitions. [2020-10-16 03:27:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 80 flow [2020-10-16 03:27:46,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 03:27:46,914 INFO L241 Difference]: Finished difference. Result has 30 places, 26 transitions, 74 flow [2020-10-16 03:27:46,914 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2020-10-16 03:27:46,916 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2020-10-16 03:27:46,916 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 74 flow [2020-10-16 03:27:46,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:46,916 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:46,916 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:46,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:27:46,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:46,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1139685252, now seen corresponding path program 1 times [2020-10-16 03:27:46,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:46,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305613002] [2020-10-16 03:27:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:47,014 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 03:27:47,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305613002] [2020-10-16 03:27:47,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:47,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:27:47,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615952756] [2020-10-16 03:27:47,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:47,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:47,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:47,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:47,018 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 90 [2020-10-16 03:27:47,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 74 flow. Second operand 3 states. [2020-10-16 03:27:47,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:47,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 90 [2020-10-16 03:27:47,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:47,049 INFO L129 PetriNetUnfolder]: 4/55 cut-off events. [2020-10-16 03:27:47,049 INFO L130 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2020-10-16 03:27:47,050 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 55 events. 4/55 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 165 event pairs, 2 based on Foata normal form. 6/57 useless extension candidates. Maximal degree in co-relation 95. Up to 11 conditions per place. [2020-10-16 03:27:47,050 INFO L132 encePairwiseOnDemand]: 86/90 looper letters, 6 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2020-10-16 03:27:47,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 90 flow [2020-10-16 03:27:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2020-10-16 03:27:47,053 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2020-10-16 03:27:47,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2020-10-16 03:27:47,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2020-10-16 03:27:47,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:47,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2020-10-16 03:27:47,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:47,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:47,056 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:47,056 INFO L185 Difference]: Start difference. First operand has 30 places, 26 transitions, 74 flow. Second operand 3 states and 205 transitions. [2020-10-16 03:27:47,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 90 flow [2020-10-16 03:27:47,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:27:47,058 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 78 flow [2020-10-16 03:27:47,058 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2020-10-16 03:27:47,059 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 03:27:47,059 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 78 flow [2020-10-16 03:27:47,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:47,059 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:47,059 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:47,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 03:27:47,060 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:47,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:47,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1596788745, now seen corresponding path program 1 times [2020-10-16 03:27:47,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:47,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391566391] [2020-10-16 03:27:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:47,104 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 03:27:47,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391566391] [2020-10-16 03:27:47,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:47,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 03:27:47,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941259620] [2020-10-16 03:27:47,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 03:27:47,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:47,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 03:27:47,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 03:27:47,107 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2020-10-16 03:27:47,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 78 flow. Second operand 4 states. [2020-10-16 03:27:47,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:47,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2020-10-16 03:27:47,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:47,152 INFO L129 PetriNetUnfolder]: 22/99 cut-off events. [2020-10-16 03:27:47,152 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-16 03:27:47,153 INFO L80 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 99 events. 22/99 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 2 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2020-10-16 03:27:47,154 INFO L132 encePairwiseOnDemand]: 83/90 looper letters, 9 selfloop transitions, 6 changer transitions 2/34 dead transitions. [2020-10-16 03:27:47,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 128 flow [2020-10-16 03:27:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 03:27:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 03:27:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2020-10-16 03:27:47,156 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2020-10-16 03:27:47,156 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 267 transitions. [2020-10-16 03:27:47,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 267 transitions. [2020-10-16 03:27:47,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:47,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 267 transitions. [2020-10-16 03:27:47,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 03:27:47,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 03:27:47,160 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 03:27:47,160 INFO L185 Difference]: Start difference. First operand has 31 places, 26 transitions, 78 flow. Second operand 4 states and 267 transitions. [2020-10-16 03:27:47,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 128 flow [2020-10-16 03:27:47,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:27:47,162 INFO L241 Difference]: Finished difference. Result has 36 places, 31 transitions, 122 flow [2020-10-16 03:27:47,163 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2020-10-16 03:27:47,163 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2020-10-16 03:27:47,163 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 122 flow [2020-10-16 03:27:47,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 03:27:47,163 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:47,164 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:47,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:27:47,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2037726299, now seen corresponding path program 2 times [2020-10-16 03:27:47,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:47,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437182293] [2020-10-16 03:27:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:47,219 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 03:27:47,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437182293] [2020-10-16 03:27:47,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:47,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 03:27:47,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486442151] [2020-10-16 03:27:47,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 03:27:47,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:47,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 03:27:47,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 03:27:47,224 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 90 [2020-10-16 03:27:47,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 122 flow. Second operand 4 states. [2020-10-16 03:27:47,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:47,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 90 [2020-10-16 03:27:47,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:47,288 INFO L129 PetriNetUnfolder]: 20/72 cut-off events. [2020-10-16 03:27:47,288 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2020-10-16 03:27:47,293 INFO L80 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 72 events. 20/72 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 174 event pairs, 0 based on Foata normal form. 7/78 useless extension candidates. Maximal degree in co-relation 177. Up to 21 conditions per place. [2020-10-16 03:27:47,293 INFO L132 encePairwiseOnDemand]: 83/90 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2020-10-16 03:27:47,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 184 flow [2020-10-16 03:27:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 03:27:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 03:27:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2020-10-16 03:27:47,296 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2020-10-16 03:27:47,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 267 transitions. [2020-10-16 03:27:47,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 267 transitions. [2020-10-16 03:27:47,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:47,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 267 transitions. [2020-10-16 03:27:47,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 03:27:47,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 03:27:47,298 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 03:27:47,299 INFO L185 Difference]: Start difference. First operand has 36 places, 31 transitions, 122 flow. Second operand 4 states and 267 transitions. [2020-10-16 03:27:47,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 184 flow [2020-10-16 03:27:47,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 176 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 03:27:47,301 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 03:27:47,301 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 03:27:47,302 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2020-10-16 03:27:47,302 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 03:27:47,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 03:27:47,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:27:47,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:27:47 BasicIcfg [2020-10-16 03:27:47,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 03:27:47,309 INFO L168 Benchmark]: Toolchain (without parser) took 3020.19 ms. Allocated memory was 251.7 MB in the beginning and 357.6 MB in the end (delta: 105.9 MB). Free memory was 206.6 MB in the beginning and 227.2 MB in the end (delta: -20.6 MB). Peak memory consumption was 85.3 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:47,310 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:27:47,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.69 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 206.6 MB in the beginning and 270.9 MB in the end (delta: -64.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:47,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.66 ms. Allocated memory is still 315.1 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:47,312 INFO L168 Benchmark]: Boogie Preprocessor took 27.31 ms. Allocated memory is still 315.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:27:47,313 INFO L168 Benchmark]: RCFGBuilder took 397.87 ms. Allocated memory is still 315.1 MB. Free memory was 268.4 MB in the beginning and 246.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:47,313 INFO L168 Benchmark]: TraceAbstraction took 1906.28 ms. Allocated memory was 315.1 MB in the beginning and 357.6 MB in the end (delta: 42.5 MB). Free memory was 246.6 MB in the beginning and 227.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 61.8 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:47,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 627.69 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 206.6 MB in the beginning and 270.9 MB in the end (delta: -64.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 55.66 ms. Allocated memory is still 315.1 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.31 ms. Allocated memory is still 315.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 397.87 ms. Allocated memory is still 315.1 MB. Free memory was 268.4 MB in the beginning and 246.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1906.28 ms. Allocated memory was 315.1 MB in the beginning and 357.6 MB in the end (delta: 42.5 MB). Free memory was 246.6 MB in the beginning and 227.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 61.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 458 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 155 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 50 PlacesBefore, 29 PlacesAfterwards, 50 TransitionsBefore, 28 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 28 TotalNumberOfCompositions, 1927 MoverChecksTotal - 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: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 37 SDtfs, 12 SDslu, 2 SDs, 0 SdLazy, 40 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred 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, 0.2s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 849 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...