/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:13:57,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:13:57,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:13:57,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:13:57,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:13:57,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:13:57,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:13:57,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:13:57,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:13:57,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:13:57,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:13:57,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:13:57,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:13:57,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:13:57,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:13:57,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:13:57,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:13:57,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:13:57,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:13:57,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:13:57,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:13:57,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:13:57,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:13:57,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:13:57,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 18:13:57,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:13:57,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:13:57,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:13:57,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:13:57,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:13:57,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:13:57,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:13:57,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:13:57,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:13:57,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:13:57,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:13:57,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:13:57,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:13:57,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:13:57,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:13:57,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:13:57,610 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:13:57,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:13:57,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:13:57,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:13:57,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:13:57,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:13:57,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:13:57,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:13:57,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:13:57,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:13:57,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:13:57,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:13:57,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:13:57,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:13:57,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:13:57,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:13:57,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:13:57,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:13:57,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:13:57,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:13:57,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:13:57,614 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:13:57,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:13:57,615 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:13:57,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:13:57,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:13:57,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:13:57,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:13:57,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:13:57,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:13:57,910 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:13:57,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i [2020-10-09 18:13:57,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cf370e2/3f240b11593143a282b706fecf5a2621/FLAGb5beef913 [2020-10-09 18:13:58,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:13:58,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i [2020-10-09 18:13:58,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cf370e2/3f240b11593143a282b706fecf5a2621/FLAGb5beef913 [2020-10-09 18:13:58,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cf370e2/3f240b11593143a282b706fecf5a2621 [2020-10-09 18:13:58,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:13:58,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:13:58,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:13:58,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:13:58,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:13:58,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:13:58" (1/1) ... [2020-10-09 18:13:58,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416d0f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:58, skipping insertion in model container [2020-10-09 18:13:58,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:13:58" (1/1) ... [2020-10-09 18:13:58,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:13:58,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:13:59,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:13:59,471 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:13:59,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:13:59,618 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:13:59,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59 WrapperNode [2020-10-09 18:13:59,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:13:59,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:13:59,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:13:59,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:13:59,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:13:59,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:13:59,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:13:59,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:13:59,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... [2020-10-09 18:13:59,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:13:59,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:13:59,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:13:59,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:13:59,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:13:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:13:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 18:13:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:13:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:13:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 18:13:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 18:13:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 18:13:59,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 18:13:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 18:13:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:13:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:13:59,759 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:14:00,161 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:14:00,162 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 18:14:00,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:00 BoogieIcfgContainer [2020-10-09 18:14:00,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:14:00,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:14:00,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:14:00,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:14:00,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:13:58" (1/3) ... [2020-10-09 18:14:00,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7da50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:00, skipping insertion in model container [2020-10-09 18:14:00,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:13:59" (2/3) ... [2020-10-09 18:14:00,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7da50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:14:00, skipping insertion in model container [2020-10-09 18:14:00,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:14:00" (3/3) ... [2020-10-09 18:14:00,172 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_tso.opt.i [2020-10-09 18:14:00,184 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:14:00,190 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 18:14:00,191 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:14:00,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,222 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,223 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,231 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,231 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,231 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,232 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:14:00,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 18:14:00,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:14:00,266 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:14:00,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:14:00,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:14:00,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:14:00,266 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:14:00,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:14:00,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:14:00,277 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-09 18:14:00,314 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-09 18:14:00,314 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:00,318 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-09 18:14:00,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-09 18:14:00,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-09 18:14:00,339 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-09 18:14:00,340 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:00,340 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:00,341 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:00,341 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:00,347 INFO L82 PathProgramCache]: Analyzing trace with hash 441942769, now seen corresponding path program 1 times [2020-10-09 18:14:00,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:00,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258126685] [2020-10-09 18:14:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:00,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:00,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:00,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:00,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:00,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258126685] [2020-10-09 18:14:00,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:00,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:00,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926493135] [2020-10-09 18:14:00,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:00,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:00,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:00,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:00,976 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 56 [2020-10-09 18:14:00,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 96 flow. Second operand 8 states. [2020-10-09 18:14:00,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:00,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 56 [2020-10-09 18:14:00,980 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:01,100 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2020-10-09 18:14:01,101 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:14:01,102 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 63. Up to 7 conditions per place. [2020-10-09 18:14:01,103 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 6 selfloop transitions, 2 changer transitions 11/54 dead transitions. [2020-10-09 18:14:01,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 150 flow [2020-10-09 18:14:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 436 transitions. [2020-10-09 18:14:01,122 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8650793650793651 [2020-10-09 18:14:01,123 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 436 transitions. [2020-10-09 18:14:01,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 436 transitions. [2020-10-09 18:14:01,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:01,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 436 transitions. [2020-10-09 18:14:01,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:01,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:01,142 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:01,144 INFO L185 Difference]: Start difference. First operand has 51 places, 45 transitions, 96 flow. Second operand 9 states and 436 transitions. [2020-10-09 18:14:01,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 150 flow [2020-10-09 18:14:01,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 18:14:01,153 INFO L241 Difference]: Finished difference. Result has 64 places, 43 transitions, 110 flow [2020-10-09 18:14:01,156 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=110, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2020-10-09 18:14:01,157 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2020-10-09 18:14:01,157 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 110 flow [2020-10-09 18:14:01,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:01,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:01,158 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:01,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:14:01,371 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:01,371 INFO L82 PathProgramCache]: Analyzing trace with hash 256262898, now seen corresponding path program 1 times [2020-10-09 18:14:01,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:01,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097775381] [2020-10-09 18:14:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:01,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:14:01,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:01,453 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:01,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:01,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097775381] [2020-10-09 18:14:01,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:01,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 18:14:01,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168698215] [2020-10-09 18:14:01,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 18:14:01,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:01,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 18:14:01,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 18:14:01,637 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 56 [2020-10-09 18:14:01,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 110 flow. Second operand 8 states. [2020-10-09 18:14:01,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:01,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 56 [2020-10-09 18:14:01,639 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:01,725 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2020-10-09 18:14:01,725 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-09 18:14:01,726 INFO L80 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 58 events. 3/58 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2020-10-09 18:14:01,726 INFO L132 encePairwiseOnDemand]: 50/56 looper letters, 6 selfloop transitions, 2 changer transitions 10/53 dead transitions. [2020-10-09 18:14:01,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 184 flow [2020-10-09 18:14:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:14:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:14:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 434 transitions. [2020-10-09 18:14:01,729 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2020-10-09 18:14:01,730 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 434 transitions. [2020-10-09 18:14:01,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 434 transitions. [2020-10-09 18:14:01,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:01,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 434 transitions. [2020-10-09 18:14:01,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:14:01,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:14:01,734 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:14:01,734 INFO L185 Difference]: Start difference. First operand has 64 places, 43 transitions, 110 flow. Second operand 9 states and 434 transitions. [2020-10-09 18:14:01,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 184 flow [2020-10-09 18:14:01,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 152 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:01,739 INFO L241 Difference]: Finished difference. Result has 64 places, 43 transitions, 114 flow [2020-10-09 18:14:01,740 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=114, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2020-10-09 18:14:01,740 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2020-10-09 18:14:01,741 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 114 flow [2020-10-09 18:14:01,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 18:14:01,741 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:01,741 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:01,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:14:01,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:01,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1419898419, now seen corresponding path program 1 times [2020-10-09 18:14:01,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:01,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763512426] [2020-10-09 18:14:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:02,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:02,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:02,050 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:02,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:02,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763512426] [2020-10-09 18:14:02,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:02,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:02,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210155179] [2020-10-09 18:14:02,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:02,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:02,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:02,310 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 56 [2020-10-09 18:14:02,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 114 flow. Second operand 9 states. [2020-10-09 18:14:02,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:02,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 56 [2020-10-09 18:14:02,311 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:02,431 INFO L129 PetriNetUnfolder]: 4/64 cut-off events. [2020-10-09 18:14:02,432 INFO L130 PetriNetUnfolder]: For 20/27 co-relation queries the response was YES. [2020-10-09 18:14:02,432 INFO L80 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 64 events. 4/64 cut-off events. For 20/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 2/65 useless extension candidates. Maximal degree in co-relation 112. Up to 7 conditions per place. [2020-10-09 18:14:02,433 INFO L132 encePairwiseOnDemand]: 48/56 looper letters, 6 selfloop transitions, 4 changer transitions 12/55 dead transitions. [2020-10-09 18:14:02,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 207 flow [2020-10-09 18:14:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 464 transitions. [2020-10-09 18:14:02,437 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2020-10-09 18:14:02,437 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 464 transitions. [2020-10-09 18:14:02,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 464 transitions. [2020-10-09 18:14:02,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:02,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 464 transitions. [2020-10-09 18:14:02,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:02,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:02,442 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:02,442 INFO L185 Difference]: Start difference. First operand has 64 places, 43 transitions, 114 flow. Second operand 10 states and 464 transitions. [2020-10-09 18:14:02,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 207 flow [2020-10-09 18:14:02,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 175 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 18:14:02,446 INFO L241 Difference]: Finished difference. Result has 67 places, 43 transitions, 128 flow [2020-10-09 18:14:02,446 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=128, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2020-10-09 18:14:02,446 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2020-10-09 18:14:02,447 INFO L481 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 128 flow [2020-10-09 18:14:02,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:02,447 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:14:02,447 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:14:02,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:14:02,659 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:14:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:14:02,660 INFO L82 PathProgramCache]: Analyzing trace with hash 444884423, now seen corresponding path program 1 times [2020-10-09 18:14:02,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:14:02,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833280205] [2020-10-09 18:14:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:14:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:14:02,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:14:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:14:02,740 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 18:14:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:02,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:14:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:14:02,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833280205] [2020-10-09 18:14:02,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:14:02,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 18:14:02,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095583344] [2020-10-09 18:14:02,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 18:14:02,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:14:02,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 18:14:02,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 18:14:02,990 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 56 [2020-10-09 18:14:02,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 128 flow. Second operand 9 states. [2020-10-09 18:14:02,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:14:02,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 56 [2020-10-09 18:14:02,991 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:14:03,084 INFO L129 PetriNetUnfolder]: 4/49 cut-off events. [2020-10-09 18:14:03,084 INFO L130 PetriNetUnfolder]: For 33/36 co-relation queries the response was YES. [2020-10-09 18:14:03,085 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 49 events. 4/49 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 2/51 useless extension candidates. Maximal degree in co-relation 95. Up to 5 conditions per place. [2020-10-09 18:14:03,085 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2020-10-09 18:14:03,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 182 flow [2020-10-09 18:14:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 18:14:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 18:14:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 458 transitions. [2020-10-09 18:14:03,088 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2020-10-09 18:14:03,089 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 458 transitions. [2020-10-09 18:14:03,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 458 transitions. [2020-10-09 18:14:03,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:14:03,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 458 transitions. [2020-10-09 18:14:03,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 18:14:03,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 18:14:03,092 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 18:14:03,092 INFO L185 Difference]: Start difference. First operand has 67 places, 43 transitions, 128 flow. Second operand 10 states and 458 transitions. [2020-10-09 18:14:03,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 182 flow [2020-10-09 18:14:03,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 142 flow, removed 14 selfloop flow, removed 9 redundant places. [2020-10-09 18:14:03,095 INFO L241 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2020-10-09 18:14:03,095 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2020-10-09 18:14:03,095 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2020-10-09 18:14:03,095 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2020-10-09 18:14:03,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 18:14:03,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:14:03,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:14:03 BasicIcfg [2020-10-09 18:14:03,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:14:03,308 INFO L168 Benchmark]: Toolchain (without parser) took 4520.14 ms. Allocated memory was 248.0 MB in the beginning and 368.1 MB in the end (delta: 120.1 MB). Free memory was 203.9 MB in the beginning and 293.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:03,308 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:14:03,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 829.19 ms. Allocated memory was 248.0 MB in the beginning and 303.6 MB in the end (delta: 55.6 MB). Free memory was 203.9 MB in the beginning and 257.0 MB in the end (delta: -53.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:03,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.20 ms. Allocated memory is still 303.6 MB. Free memory was 257.0 MB in the beginning and 254.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:03,311 INFO L168 Benchmark]: Boogie Preprocessor took 25.95 ms. Allocated memory is still 303.6 MB. Free memory is still 254.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 18:14:03,312 INFO L168 Benchmark]: RCFGBuilder took 468.96 ms. Allocated memory is still 303.6 MB. Free memory was 254.5 MB in the beginning and 232.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:03,313 INFO L168 Benchmark]: TraceAbstraction took 3139.76 ms. Allocated memory was 303.6 MB in the beginning and 368.1 MB in the end (delta: 64.5 MB). Free memory was 232.7 MB in the beginning and 293.6 MB in the end (delta: -60.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.2 GB. [2020-10-09 18:14:03,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 829.19 ms. Allocated memory was 248.0 MB in the beginning and 303.6 MB in the end (delta: 55.6 MB). Free memory was 203.9 MB in the beginning and 257.0 MB in the end (delta: -53.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.20 ms. Allocated memory is still 303.6 MB. Free memory was 257.0 MB in the beginning and 254.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.95 ms. Allocated memory is still 303.6 MB. Free memory is still 254.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 468.96 ms. Allocated memory is still 303.6 MB. Free memory was 254.5 MB in the beginning and 232.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3139.76 ms. Allocated memory was 303.6 MB in the beginning and 368.1 MB in the end (delta: 64.5 MB). Free memory was 232.7 MB in the beginning and 293.6 MB in the end (delta: -60.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 3 procedures, 55 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: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 176 SDslu, 261 SDs, 0 SdLazy, 223 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 226 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred 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, 0.5s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 23985 SizeOfPredicates, 26 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...