/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-wmm/safe007_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:02:36,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:02:36,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:02:36,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:02:36,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:02:36,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:02:36,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:02:36,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:02:36,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:02:36,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:02:36,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:02:36,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:02:36,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:02:36,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:02:36,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:02:36,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:02:36,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:02:36,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:02:36,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:02:36,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:02:36,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:02:36,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:02:36,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:02:36,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:02:36,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:02:36,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:02:36,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:02:36,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:02:36,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:02:36,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:02:36,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:02:36,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:02:36,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:02:36,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:02:36,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:02:36,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:02:36,668 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 05:02:36,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:02:36,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:02:36,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:02:36,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:02:36,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:02:36,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:02:36,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:02:36,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:02:36,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:02:36,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:02:36,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:02:36,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:02:36,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:02:36,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:02:36,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:02:36,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:02:36,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:02:36,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:02:36,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:02:36,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:02:36,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:02:36,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:02:36,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:02:36,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:02:36,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:02:36,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:02:36,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:02:36,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:02:36,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:02:37,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:02:37,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:02:37,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:02:37,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:02:37,047 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:02:37,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2020-10-16 05:02:37,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d79a360/8842d9c6a01b43229bbbbdf3e4981213/FLAG6e8019d3f [2020-10-16 05:02:37,678 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:02:37,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2020-10-16 05:02:37,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d79a360/8842d9c6a01b43229bbbbdf3e4981213/FLAG6e8019d3f [2020-10-16 05:02:37,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d79a360/8842d9c6a01b43229bbbbdf3e4981213 [2020-10-16 05:02:37,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:02:37,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:02:37,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:37,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:02:37,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:02:37,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:37" (1/1) ... [2020-10-16 05:02:37,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fad9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:37, skipping insertion in model container [2020-10-16 05:02:37,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:37" (1/1) ... [2020-10-16 05:02:37,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:02:38,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:02:38,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:38,466 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:02:38,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:38,610 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:02:38,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38 WrapperNode [2020-10-16 05:02:38,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:38,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:38,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:02:38,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:02:38,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:38,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:02:38,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:02:38,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:02:38,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (1/1) ... [2020-10-16 05:02:38,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:02:38,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:02:38,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:02:38,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:02:38,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (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 05:02:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:02:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:02:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:02:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:02:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:02:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:02:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:02:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:02:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:02:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:02:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:02:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:02:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:02:38,780 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 05:02:39,293 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:02:39,294 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:02:39,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:39 BoogieIcfgContainer [2020-10-16 05:02:39,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:02:39,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:02:39,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:02:39,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:02:39,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:02:37" (1/3) ... [2020-10-16 05:02:39,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4113d684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:39, skipping insertion in model container [2020-10-16 05:02:39,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:38" (2/3) ... [2020-10-16 05:02:39,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4113d684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:39, skipping insertion in model container [2020-10-16 05:02:39,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:39" (3/3) ... [2020-10-16 05:02:39,305 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_pso.opt.i [2020-10-16 05:02:39,316 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:02:39,324 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:02:39,324 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:02:39,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,350 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,353 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,353 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,353 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,358 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,358 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,367 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:39,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:02:39,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:02:39,407 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:02:39,408 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:02:39,408 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:02:39,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:02:39,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:02:39,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:02:39,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:02:39,423 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:02:39,466 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 05:02:39,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:39,471 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:02:39,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:02:39,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:39,480 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:02:39,483 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:39,486 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:39,487 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2020-10-16 05:02:39,506 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2020-10-16 05:02:39,506 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:39,507 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:02:39,509 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:02:41,058 INFO L132 LiptonReduction]: Checked pairs total: 1796 [2020-10-16 05:02:41,059 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 05:02:41,061 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1583 [2020-10-16 05:02:41,070 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:02:41,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:41,071 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:41,072 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:41,072 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1282912004, now seen corresponding path program 1 times [2020-10-16 05:02:41,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:41,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556143124] [2020-10-16 05:02:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:41,306 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 05:02:41,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556143124] [2020-10-16 05:02:41,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:41,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:02:41,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117879571] [2020-10-16 05:02:41,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:41,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:41,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:41,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:41,338 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 115 [2020-10-16 05:02:41,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:02:41,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:41,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 115 [2020-10-16 05:02:41,342 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:41,361 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:02:41,362 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:41,362 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:02:41,363 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:02:41,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:02:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 05:02:41,380 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-16 05:02:41,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 05:02:41,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 05:02:41,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:41,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 05:02:41,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:41,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:41,397 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:41,399 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 297 transitions. [2020-10-16 05:02:41,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:02:41,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:41,406 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:02:41,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:02:41,409 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:02:41,410 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:02:41,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:41,410 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:41,410 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:41,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:02:41,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1130280492, now seen corresponding path program 1 times [2020-10-16 05:02:41,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:41,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192158115] [2020-10-16 05:02:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:41,494 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 05:02:41,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192158115] [2020-10-16 05:02:41,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:41,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:41,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405402211] [2020-10-16 05:02:41,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:41,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:41,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:41,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:41,500 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:02:41,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:02:41,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:41,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:02:41,501 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:41,539 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 05:02:41,539 INFO L130 PetriNetUnfolder]: For 5/12 co-relation queries the response was YES. [2020-10-16 05:02:41,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 0/22 cut-off events. For 5/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:02:41,540 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:02:41,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 63 flow [2020-10-16 05:02:41,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:02:41,544 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:02:41,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:02:41,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:02:41,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:41,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:02:41,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:41,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:41,549 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:41,549 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:02:41,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 63 flow [2020-10-16 05:02:41,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:02:41,551 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 05:02:41,552 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 05:02:41,552 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:02:41,553 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 05:02:41,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:41,553 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:41,553 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:41,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:02:41,554 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:41,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1681712399, now seen corresponding path program 1 times [2020-10-16 05:02:41,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:41,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941236969] [2020-10-16 05:02:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:41,649 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 05:02:41,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941236969] [2020-10-16 05:02:41,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:41,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:41,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240114641] [2020-10-16 05:02:41,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:41,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:41,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:41,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:41,654 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:02:41,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:02:41,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:41,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:02:41,655 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:41,683 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-10-16 05:02:41,683 INFO L130 PetriNetUnfolder]: For 18/21 co-relation queries the response was YES. [2020-10-16 05:02:41,683 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 25 events. 0/25 cut-off events. For 18/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:02:41,684 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 05:02:41,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 18 transitions, 70 flow [2020-10-16 05:02:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 05:02:41,687 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8065217391304348 [2020-10-16 05:02:41,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 05:02:41,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 05:02:41,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:41,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 05:02:41,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:41,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:41,691 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:41,692 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 371 transitions. [2020-10-16 05:02:41,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 18 transitions, 70 flow [2020-10-16 05:02:41,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 58 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:41,694 INFO L241 Difference]: Finished difference. Result has 31 places, 17 transitions, 60 flow [2020-10-16 05:02:41,694 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2020-10-16 05:02:41,694 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:02:41,695 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 17 transitions, 60 flow [2020-10-16 05:02:41,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:41,695 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:41,695 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:41,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:02:41,696 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash 131235208, now seen corresponding path program 1 times [2020-10-16 05:02:41,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:41,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334360051] [2020-10-16 05:02:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:41,793 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 05:02:41,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334360051] [2020-10-16 05:02:41,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:41,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:41,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656560776] [2020-10-16 05:02:41,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:41,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:41,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:41,797 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2020-10-16 05:02:41,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 17 transitions, 60 flow. Second operand 4 states. [2020-10-16 05:02:41,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:41,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2020-10-16 05:02:41,798 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:41,814 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 05:02:41,814 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 05:02:41,814 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 16 events. 0/16 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 05:02:41,815 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2020-10-16 05:02:41,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 58 flow [2020-10-16 05:02:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2020-10-16 05:02:41,817 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8021739130434783 [2020-10-16 05:02:41,817 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2020-10-16 05:02:41,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2020-10-16 05:02:41,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:41,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2020-10-16 05:02:41,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:41,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:41,821 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:41,821 INFO L185 Difference]: Start difference. First operand has 31 places, 17 transitions, 60 flow. Second operand 4 states and 369 transitions. [2020-10-16 05:02:41,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 58 flow [2020-10-16 05:02:41,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 44 flow, removed 0 selfloop flow, removed 7 redundant places. [2020-10-16 05:02:41,822 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2020-10-16 05:02:41,822 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2020-10-16 05:02:41,822 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2020-10-16 05:02:41,823 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2020-10-16 05:02:41,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:41,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:02:41,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:02:41 BasicIcfg [2020-10-16 05:02:41,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:02:41,830 INFO L168 Benchmark]: Toolchain (without parser) took 3878.14 ms. Allocated memory was 251.7 MB in the beginning and 369.1 MB in the end (delta: 117.4 MB). Free memory was 206.0 MB in the beginning and 329.5 MB in the end (delta: -123.6 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:41,831 INFO L168 Benchmark]: CDTParser took 0.20 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 05:02:41,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.96 ms. Allocated memory was 251.7 MB in the beginning and 314.6 MB in the end (delta: 62.9 MB). Free memory was 206.0 MB in the beginning and 264.9 MB in the end (delta: -58.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:41,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.14 ms. Allocated memory is still 314.6 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:41,833 INFO L168 Benchmark]: Boogie Preprocessor took 27.94 ms. Allocated memory is still 314.6 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:41,834 INFO L168 Benchmark]: RCFGBuilder took 602.65 ms. Allocated memory is still 314.6 MB. Free memory was 262.4 MB in the beginning and 240.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:41,835 INFO L168 Benchmark]: TraceAbstraction took 2529.84 ms. Allocated memory was 314.6 MB in the beginning and 369.1 MB in the end (delta: 54.5 MB). Free memory was 238.0 MB in the beginning and 329.5 MB in the end (delta: -91.5 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:41,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 658.96 ms. Allocated memory was 251.7 MB in the beginning and 314.6 MB in the end (delta: 62.9 MB). Free memory was 206.0 MB in the beginning and 264.9 MB in the end (delta: -58.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.14 ms. Allocated memory is still 314.6 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.94 ms. Allocated memory is still 314.6 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 602.65 ms. Allocated memory is still 314.6 MB. Free memory was 262.4 MB in the beginning and 240.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2529.84 ms. Allocated memory was 314.6 MB in the beginning and 369.1 MB in the end (delta: 54.5 MB). Free memory was 238.0 MB in the beginning and 329.5 MB in the end (delta: -91.5 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 648 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 100 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 66 PlacesBefore, 27 PlacesAfterwards, 57 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 1796 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 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: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 12 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 14 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=3, 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1071 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...