/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:38:33,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:38:33,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:38:33,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:38:33,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:38:33,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:38:33,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:38:33,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:38:33,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:38:33,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:38:33,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:38:33,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:38:33,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:38:33,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:38:33,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:38:33,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:38:33,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:38:33,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:38:33,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:38:33,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:38:33,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:38:33,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:38:33,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:38:33,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:38:33,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:38:33,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:38:33,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:38:33,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:38:33,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:38:33,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:38:33,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:38:33,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:38:33,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:38:33,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:38:33,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:38:33,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:38:33,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 18:38:33,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:38:33,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:38:33,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:38:33,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:38:33,673 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:38:33,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:38:33,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:38:33,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:38:33,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:38:33,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:38:33,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:38:33,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:38:33,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:38:33,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:38:33,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:38:33,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:38:33,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:38:33,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:38:33,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:38:33,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:38:33,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:38:33,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:38:33,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:38:33,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:38:33,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:38:33,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:38:33,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:38:33,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:38:33,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:38:33,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:38:33,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:38:33,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:38:33,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:38:33,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:38:33,992 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:38:33,993 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-15 18:38:34,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc0bf0f1/0e7e649c65a64a1f839a89410187f195/FLAG7b8bf4ae9 [2020-10-15 18:38:34,618 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:38:34,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-15 18:38:34,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc0bf0f1/0e7e649c65a64a1f839a89410187f195/FLAG7b8bf4ae9 [2020-10-15 18:38:34,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc0bf0f1/0e7e649c65a64a1f839a89410187f195 [2020-10-15 18:38:34,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:38:34,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:38:34,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:38:34,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:38:34,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:38:34,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:38:34" (1/1) ... [2020-10-15 18:38:34,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e01ad76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:34, skipping insertion in model container [2020-10-15 18:38:34,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:38:34" (1/1) ... [2020-10-15 18:38:34,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:38:34,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:38:35,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:38:35,507 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:38:35,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:38:35,677 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:38:35,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35 WrapperNode [2020-10-15 18:38:35,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:38:35,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:38:35,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:38:35,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:38:35,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:38:35,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:38:35,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:38:35,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:38:35,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (1/1) ... [2020-10-15 18:38:35,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:38:35,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:38:35,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:38:35,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:38:35,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (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 [2020-10-15 18:38:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:38:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:38:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:38:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:38:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:38:35,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:38:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:38:35,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:38:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:38:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:38:35,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:38:35,809 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 18:38:36,144 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:38:36,145 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:38:36,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:38:36 BoogieIcfgContainer [2020-10-15 18:38:36,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:38:36,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:38:36,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:38:36,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:38:36,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:38:34" (1/3) ... [2020-10-15 18:38:36,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfee2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:38:36, skipping insertion in model container [2020-10-15 18:38:36,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:38:35" (2/3) ... [2020-10-15 18:38:36,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfee2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:38:36, skipping insertion in model container [2020-10-15 18:38:36,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:38:36" (3/3) ... [2020-10-15 18:38:36,156 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-10-15 18:38:36,166 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:38:36,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:38:36,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:38:36,174 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:38:36,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,199 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,199 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,199 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,200 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,201 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,201 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,206 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,206 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,214 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,214 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,214 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:38:36,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 18:38:36,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:38:36,250 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:38:36,250 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:38:36,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:38:36,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:38:36,251 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:38:36,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:38:36,251 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:38:36,263 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:38:36,265 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-10-15 18:38:36,267 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 54 transitions, 118 flow [2020-10-15 18:38:36,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-10-15 18:38:36,304 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-10-15 18:38:36,304 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:38:36,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-15 18:38:36,312 INFO L117 LiptonReduction]: Number of co-enabled transitions 672 [2020-10-15 18:38:37,588 INFO L132 LiptonReduction]: Checked pairs total: 1338 [2020-10-15 18:38:37,588 INFO L134 LiptonReduction]: Total number of compositions: 48 [2020-10-15 18:38:37,595 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-15 18:38:37,608 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-15 18:38:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-15 18:38:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 18:38:37,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:38:37,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 18:38:37,618 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:38:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:38:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-10-15 18:38:37,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:38:37,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426248013] [2020-10-15 18:38:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:38:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:38:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:38:37,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426248013] [2020-10-15 18:38:37,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:38:37,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:38:37,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141751945] [2020-10-15 18:38:37,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:38:37,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:38:37,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:38:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:37,852 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-15 18:38:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:38:37,884 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-10-15 18:38:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:38:37,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-15 18:38:37,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:38:37,897 INFO L225 Difference]: With dead ends: 72 [2020-10-15 18:38:37,898 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 18:38:37,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 18:38:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-15 18:38:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-15 18:38:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-10-15 18:38:37,941 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-10-15 18:38:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:38:37,942 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-10-15 18:38:37,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:38:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-10-15 18:38:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-15 18:38:37,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:38:37,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:38:37,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:38:37,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:38:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:38:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash 343673099, now seen corresponding path program 1 times [2020-10-15 18:38:37,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:38:37,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369363808] [2020-10-15 18:38:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:38:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:38:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:38:38,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369363808] [2020-10-15 18:38:38,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:38:38,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:38:38,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186442092] [2020-10-15 18:38:38,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:38:38,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:38:38,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:38:38,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:38,038 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-10-15 18:38:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:38:38,046 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-10-15 18:38:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:38:38,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-15 18:38:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:38:38,048 INFO L225 Difference]: With dead ends: 55 [2020-10-15 18:38:38,048 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 18:38:38,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 18:38:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-15 18:38:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 18:38:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-10-15 18:38:38,058 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-10-15 18:38:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:38:38,058 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-10-15 18:38:38,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:38:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-10-15 18:38:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:38:38,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:38:38,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:38:38,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:38:38,060 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:38:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:38:38,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-10-15 18:38:38,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:38:38,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668073606] [2020-10-15 18:38:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:38:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:38:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:38:38,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668073606] [2020-10-15 18:38:38,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:38:38,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:38:38,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659727095] [2020-10-15 18:38:38,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:38:38,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:38:38,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:38:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:38:38,156 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-10-15 18:38:38,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:38:38,188 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-10-15 18:38:38,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:38:38,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-15 18:38:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:38:38,190 INFO L225 Difference]: With dead ends: 56 [2020-10-15 18:38:38,190 INFO L226 Difference]: Without dead ends: 40 [2020-10-15 18:38:38,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:38:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-15 18:38:38,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-15 18:38:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 18:38:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-15 18:38:38,197 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-10-15 18:38:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:38:38,197 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-15 18:38:38,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:38:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-15 18:38:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:38:38,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:38:38,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:38:38,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:38:38,199 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:38:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:38:38,200 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-10-15 18:38:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:38:38,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979105845] [2020-10-15 18:38:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:38:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:38:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:38:38,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979105845] [2020-10-15 18:38:38,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:38:38,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:38:38,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136005313] [2020-10-15 18:38:38,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:38:38,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:38:38,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:38:38,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:38,246 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-10-15 18:38:38,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:38:38,255 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-10-15 18:38:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:38:38,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:38:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:38:38,256 INFO L225 Difference]: With dead ends: 51 [2020-10-15 18:38:38,256 INFO L226 Difference]: Without dead ends: 41 [2020-10-15 18:38:38,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-15 18:38:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-15 18:38:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 18:38:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-10-15 18:38:38,263 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-10-15 18:38:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:38:38,263 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-10-15 18:38:38,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:38:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-10-15 18:38:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:38:38,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:38:38,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:38:38,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:38:38,265 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:38:38,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:38:38,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-10-15 18:38:38,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:38:38,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267219278] [2020-10-15 18:38:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:38:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:38:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:38:38,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267219278] [2020-10-15 18:38:38,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:38:38,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:38:38,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532473655] [2020-10-15 18:38:38,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:38:38,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:38:38,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:38:38,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:38,322 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-10-15 18:38:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:38:38,330 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-10-15 18:38:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:38:38,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 18:38:38,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:38:38,332 INFO L225 Difference]: With dead ends: 42 [2020-10-15 18:38:38,332 INFO L226 Difference]: Without dead ends: 31 [2020-10-15 18:38:38,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:38:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-15 18:38:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-15 18:38:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 18:38:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-10-15 18:38:38,337 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-10-15 18:38:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:38:38,337 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-10-15 18:38:38,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:38:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-10-15 18:38:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:38:38,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:38:38,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:38:38,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:38:38,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:38:38,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:38:38,340 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-10-15 18:38:38,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:38:38,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102762293] [2020-10-15 18:38:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:38:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:38:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:38:38,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102762293] [2020-10-15 18:38:38,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:38:38,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:38:38,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052350270] [2020-10-15 18:38:38,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:38:38,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:38:38,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:38:38,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:38:38,406 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-10-15 18:38:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:38:38,447 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-10-15 18:38:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:38:38,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 18:38:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:38:38,448 INFO L225 Difference]: With dead ends: 25 [2020-10-15 18:38:38,448 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:38:38,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:38:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:38:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:38:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:38:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:38:38,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-15 18:38:38,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:38:38,450 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:38:38,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:38:38,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:38:38,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:38:38,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:38:38,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:38:38 BasicIcfg [2020-10-15 18:38:38,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:38:38,457 INFO L168 Benchmark]: Toolchain (without parser) took 3561.75 ms. Allocated memory was 252.2 MB in the beginning and 371.7 MB in the end (delta: 119.5 MB). Free memory was 207.3 MB in the beginning and 340.9 MB in the end (delta: -133.5 MB). Peak memory consumption was 152.1 MB. Max. memory is 14.2 GB. [2020-10-15 18:38:38,458 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 252.2 MB. Free memory was 230.2 MB in the beginning and 229.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-15 18:38:38,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.35 ms. Allocated memory was 252.2 MB in the beginning and 317.2 MB in the end (delta: 65.0 MB). Free memory was 207.3 MB in the beginning and 271.4 MB in the end (delta: -64.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 14.2 GB. [2020-10-15 18:38:38,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 317.2 MB. Free memory was 271.4 MB in the beginning and 269.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 18:38:38,460 INFO L168 Benchmark]: Boogie Preprocessor took 23.25 ms. Allocated memory is still 317.2 MB. Free memory was 269.7 MB in the beginning and 268.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 18:38:38,461 INFO L168 Benchmark]: RCFGBuilder took 402.94 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 248.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 14.2 GB. [2020-10-15 18:38:38,462 INFO L168 Benchmark]: TraceAbstraction took 2305.64 ms. Allocated memory was 317.2 MB in the beginning and 371.7 MB in the end (delta: 54.5 MB). Free memory was 247.5 MB in the beginning and 340.9 MB in the end (delta: -93.4 MB). Peak memory consumption was 127.2 MB. Max. memory is 14.2 GB. [2020-10-15 18:38:38,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 252.2 MB. Free memory was 230.2 MB in the beginning and 229.4 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 783.35 ms. Allocated memory was 252.2 MB in the beginning and 317.2 MB in the end (delta: 65.0 MB). Free memory was 207.3 MB in the beginning and 271.4 MB in the end (delta: -64.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 317.2 MB. Free memory was 271.4 MB in the beginning and 269.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 23.25 ms. Allocated memory is still 317.2 MB. Free memory was 269.7 MB in the beginning and 268.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 402.94 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 248.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2305.64 ms. Allocated memory was 317.2 MB in the beginning and 371.7 MB in the end (delta: 54.5 MB). Free memory was 247.5 MB in the beginning and 340.9 MB in the end (delta: -93.4 MB). Peak memory consumption was 127.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 486 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 38 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 59 PlacesBefore, 22 PlacesAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 48 TotalNumberOfCompositions, 1338 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 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 79 SDtfs, 33 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...