/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:33:23,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:33:23,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:33:23,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:33:23,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:33:23,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:33:23,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:33:23,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:33:23,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:33:23,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:33:23,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:33:23,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:33:23,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:33:23,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:33:23,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:33:23,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:33:23,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:33:23,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:33:23,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:33:23,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:33:23,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:33:23,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:33:23,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:33:23,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:33:23,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:33:23,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:33:23,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:33:23,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:33:23,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:33:23,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:33:23,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:33:23,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:33:23,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:33:23,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:33:23,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:33:23,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:33:23,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:33:23,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:33:23,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:33:23,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:33:23,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:33:23,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:33:23,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:33:23,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:33:23,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:33:23,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:33:23,643 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:33:23,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:33:23,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:33:23,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:33:23,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:33:23,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:33:23,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:33:23,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:33:23,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:33:23,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:33:23,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:33:23,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:33:23,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:33:23,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:33:23,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:33:23,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:33:23,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:33:23,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:33:23,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:33:23,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:33:23,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:33:23,647 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:33:23,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:33:23,647 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:33:23,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:33:23,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:33:23,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:33:23,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:33:23,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:33:23,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:33:23,940 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:33:23,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-04-18 10:33:24,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898ed5d27/cffa6a05491247b08be5f74d0e751f0f/FLAG40eb8812f [2020-04-18 10:33:24,578 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:33:24,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-04-18 10:33:24,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898ed5d27/cffa6a05491247b08be5f74d0e751f0f/FLAG40eb8812f [2020-04-18 10:33:24,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898ed5d27/cffa6a05491247b08be5f74d0e751f0f [2020-04-18 10:33:24,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:33:24,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:33:24,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:33:24,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:33:24,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:33:24,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:33:24" (1/1) ... [2020-04-18 10:33:24,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff0bbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:24, skipping insertion in model container [2020-04-18 10:33:24,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:33:24" (1/1) ... [2020-04-18 10:33:24,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:33:24,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:33:25,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:33:25,443 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:33:25,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:33:25,575 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:33:25,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25 WrapperNode [2020-04-18 10:33:25,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:33:25,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:33:25,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:33:25,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:33:25,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:33:25,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:33:25,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:33:25,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:33:25,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (1/1) ... [2020-04-18 10:33:25,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:33:25,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:33:25,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:33:25,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:33:25,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (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 [2020-04-18 10:33:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:33:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:33:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:33:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:33:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:33:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:33:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:33:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:33:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:33:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:33:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:33:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:33:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:33:25,733 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 10:33:26,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:33:26,100 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:33:26,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:33:26 BoogieIcfgContainer [2020-04-18 10:33:26,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:33:26,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:33:26,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:33:26,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:33:26,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:33:24" (1/3) ... [2020-04-18 10:33:26,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61985328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:33:26, skipping insertion in model container [2020-04-18 10:33:26,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:33:25" (2/3) ... [2020-04-18 10:33:26,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61985328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:33:26, skipping insertion in model container [2020-04-18 10:33:26,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:33:26" (3/3) ... [2020-04-18 10:33:26,113 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-04-18 10:33:26,121 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:33:26,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:33:26,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:33:26,128 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:33:26,154 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,154 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,154 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,155 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,156 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,156 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,157 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,157 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,157 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,157 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,158 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,158 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,158 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,159 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,159 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,159 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,160 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,160 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,165 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,165 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,171 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,171 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,172 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,172 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,175 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,175 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,175 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,175 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:33:26,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:33:26,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:33:26,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:33:26,213 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:33:26,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:33:26,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:33:26,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:33:26,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:33:26,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:33:26,230 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 10:33:26,233 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:33:26,291 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:33:26,291 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:33:26,296 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:33:26,299 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 10:33:26,319 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 10:33:26,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:33:26,320 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:33:26,323 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:33:26,324 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:33:28,052 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 10:33:28,251 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 10:33:28,251 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 10:33:28,255 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 10:33:28,297 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:33:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:33:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:33:28,309 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:33:28,310 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:33:28,311 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:33:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 10:33:28,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:33:28,325 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1285918725] [2020-04-18 10:33:28,342 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:28,359 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:33:28,361 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:33:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:33:28,363 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:33:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:28,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 2 times [2020-04-18 10:33:28,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:28,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984795587] [2020-04-18 10:33:28,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:28,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984795587] [2020-04-18 10:33:28,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:28,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:33:28,614 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:28,616 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:28,623 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:33:28,623 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:28,630 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:33:28,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:33:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:33:28,638 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:33:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:28,643 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:33:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:33:28,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:33:28,644 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1285918725] [2020-04-18 10:33:28,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:33:28,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:33:28,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1285918725] [2020-04-18 10:33:28,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:33:28,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:33:28,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:33:28,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:33:28,653 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:33:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:28,698 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 10:33:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:33:28,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:33:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:33:28,736 INFO L225 Difference]: With dead ends: 282 [2020-04-18 10:33:28,736 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 10:33:28,740 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:33:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 10:33:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 10:33:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 10:33:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 10:33:28,809 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 10:33:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:33:28,811 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 10:33:28,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:33:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 10:33:28,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:33:28,812 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:33:28,813 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:33:28,813 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:33:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:28,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-18 10:33:28,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:33:28,814 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1477988942] [2020-04-18 10:33:28,814 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:28,815 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:33:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:33:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:33:28,816 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:33:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:28,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 2 times [2020-04-18 10:33:28,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:28,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040529304] [2020-04-18 10:33:28,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:28,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040529304] [2020-04-18 10:33:28,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:28,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:28,889 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:28,889 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:28,891 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:33:28,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:28,900 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:33:28,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:28,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:33:28,901 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 10:33:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:28,917 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 10:33:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 10:33:28,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:33:28,918 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1477988942] [2020-04-18 10:33:28,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:33:28,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:33:28,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1477988942] [2020-04-18 10:33:28,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:33:28,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:33:28,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:28,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:33:28,920 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 10:33:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:28,968 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-18 10:33:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:33:28,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 10:33:28,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:33:28,971 INFO L225 Difference]: With dead ends: 242 [2020-04-18 10:33:28,972 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 10:33:28,976 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:33:28,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 10:33:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 10:33:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 10:33:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 10:33:29,006 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-18 10:33:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:33:29,007 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 10:33:29,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:33:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 10:33:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:33:29,008 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:33:29,008 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:33:29,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:33:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-18 10:33:29,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:33:29,014 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1192383780] [2020-04-18 10:33:29,015 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,016 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 10:33:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 10:33:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:33:29,018 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:33:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1380861297, now seen corresponding path program 2 times [2020-04-18 10:33:29,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:29,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862015557] [2020-04-18 10:33:29,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:29,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862015557] [2020-04-18 10:33:29,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:29,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:29,113 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:29,115 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,137 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 10:33:29,137 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:29,149 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:33:29,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:29,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:33:29,150 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-04-18 10:33:29,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,167 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:33:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:33:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:33:29,168 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:33:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 3 times [2020-04-18 10:33:29,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:29,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618322738] [2020-04-18 10:33:29,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:29,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618322738] [2020-04-18 10:33:29,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:29,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:29,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:29,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,257 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 10:33:29,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:29,274 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:33:29,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:29,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:33:29,277 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 10:33:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,293 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 10:33:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 10:33:29,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:33:29,294 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1192383780] [2020-04-18 10:33:29,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:33:29,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:33:29,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1192383780] [2020-04-18 10:33:29,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:33:29,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:33:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:33:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:33:29,302 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 6 states. [2020-04-18 10:33:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,398 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-04-18 10:33:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 10:33:29,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 10:33:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:33:29,401 INFO L225 Difference]: With dead ends: 182 [2020-04-18 10:33:29,401 INFO L226 Difference]: Without dead ends: 86 [2020-04-18 10:33:29,402 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:33:29,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-04-18 10:33:29,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-04-18 10:33:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-18 10:33:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-04-18 10:33:29,414 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 11 [2020-04-18 10:33:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:33:29,415 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-04-18 10:33:29,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:33:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-04-18 10:33:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:33:29,419 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:33:29,419 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:33:29,419 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:33:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,420 INFO L82 PathProgramCache]: Analyzing trace with hash -118658274, now seen corresponding path program 1 times [2020-04-18 10:33:29,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:33:29,421 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [881110891] [2020-04-18 10:33:29,422 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,424 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 189 transitions. [2020-04-18 10:33:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-04-18 10:33:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:33:29,428 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:33:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,429 INFO L82 PathProgramCache]: Analyzing trace with hash -117505074, now seen corresponding path program 2 times [2020-04-18 10:33:29,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:29,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109528490] [2020-04-18 10:33:29,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:29,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109528490] [2020-04-18 10:33:29,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:29,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:29,490 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:29,491 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,497 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 58 transitions. [2020-04-18 10:33:29,497 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:29,507 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:33:29,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:29,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:33:29,508 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-04-18 10:33:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,525 INFO L93 Difference]: Finished difference Result 89 states and 201 transitions. [2020-04-18 10:33:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 201 transitions. [2020-04-18 10:33:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:33:29,526 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:33:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,527 INFO L82 PathProgramCache]: Analyzing trace with hash -118658274, now seen corresponding path program 3 times [2020-04-18 10:33:29,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:29,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724253614] [2020-04-18 10:33:29,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:29,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724253614] [2020-04-18 10:33:29,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:29,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:29,573 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:29,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,579 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-04-18 10:33:29,579 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:29,648 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:33:29,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:33:29,649 INFO L87 Difference]: Start difference. First operand 89 states and 201 transitions. Second operand 4 states. [2020-04-18 10:33:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,672 INFO L93 Difference]: Finished difference Result 95 states and 208 transitions. [2020-04-18 10:33:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 208 transitions. [2020-04-18 10:33:29,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:33:29,673 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [881110891] [2020-04-18 10:33:29,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:33:29,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:33:29,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [881110891] [2020-04-18 10:33:29,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 10:33:29,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:33:29,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:33:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:33:29,675 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 6 states. [2020-04-18 10:33:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,722 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 10:33:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 10:33:29,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-04-18 10:33:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:33:29,724 INFO L225 Difference]: With dead ends: 82 [2020-04-18 10:33:29,724 INFO L226 Difference]: Without dead ends: 82 [2020-04-18 10:33:29,724 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:33:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-18 10:33:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-18 10:33:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-18 10:33:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-04-18 10:33:29,736 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 13 [2020-04-18 10:33:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:33:29,737 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-04-18 10:33:29,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 10:33:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 10:33:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:33:29,739 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:33:29,739 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:33:29,740 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:33:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,740 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 1 times [2020-04-18 10:33:29,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:33:29,741 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [137584445] [2020-04-18 10:33:29,742 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,745 INFO L259 McrAutomatonBuilder]: Finished intersection with 107 states and 270 transitions. [2020-04-18 10:33:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-04-18 10:33:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:33:29,753 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:33:29,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash 652437482, now seen corresponding path program 2 times [2020-04-18 10:33:29,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:29,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817628985] [2020-04-18 10:33:29,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:29,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817628985] [2020-04-18 10:33:29,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:29,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:29,804 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:29,805 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,811 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2020-04-18 10:33:29,812 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:29,824 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:33:29,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:29,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:33:29,825 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2020-04-18 10:33:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,850 INFO L93 Difference]: Finished difference Result 125 states and 303 transitions. [2020-04-18 10:33:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 303 transitions. [2020-04-18 10:33:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:33:29,853 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:33:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 3 times [2020-04-18 10:33:29,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:29,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219716373] [2020-04-18 10:33:29,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:29,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219716373] [2020-04-18 10:33:29,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:29,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:29,899 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:29,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 50 transitions. [2020-04-18 10:33:29,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:29,916 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:33:29,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:29,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:33:29,917 INFO L87 Difference]: Start difference. First operand 125 states and 303 transitions. Second operand 4 states. [2020-04-18 10:33:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:29,943 INFO L93 Difference]: Finished difference Result 171 states and 388 transitions. [2020-04-18 10:33:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 388 transitions. [2020-04-18 10:33:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:33:29,944 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:33:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:33:29,944 INFO L82 PathProgramCache]: Analyzing trace with hash -453593878, now seen corresponding path program 4 times [2020-04-18 10:33:29,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:33:29,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112688824] [2020-04-18 10:33:29,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:33:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:33:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:33:29,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112688824] [2020-04-18 10:33:29,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:33:29,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:33:29,977 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:33:29,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:33:29,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 10:33:29,983 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:33:30,000 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:33:30,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:33:30,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:33:30,001 INFO L87 Difference]: Start difference. First operand 171 states and 388 transitions. Second operand 4 states. [2020-04-18 10:33:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:30,016 INFO L93 Difference]: Finished difference Result 205 states and 441 transitions. [2020-04-18 10:33:30,016 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 441 transitions. [2020-04-18 10:33:30,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:33:30,018 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [137584445] [2020-04-18 10:33:30,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:33:30,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:33:30,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [137584445] [2020-04-18 10:33:30,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:33:30,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:33:30,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:33:30,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:33:30,019 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 7 states. [2020-04-18 10:33:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:33:30,092 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-04-18 10:33:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:33:30,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 10:33:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:33:30,093 INFO L225 Difference]: With dead ends: 74 [2020-04-18 10:33:30,093 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:33:30,094 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:33:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:33:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:33:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:33:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:33:30,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 10:33:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:33:30,095 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:33:30,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:33:30,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:33:30,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:33:30,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:33:30 BasicIcfg [2020-04-18 10:33:30,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:33:30,103 INFO L168 Benchmark]: Toolchain (without parser) took 5200.34 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.5 MB in the beginning and 96.1 MB in the end (delta: 6.4 MB). Peak memory consumption was 112.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:33:30,104 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 10:33:30,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.00 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 160.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-04-18 10:33:30,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:33:30,111 INFO L168 Benchmark]: Boogie Preprocessor took 28.00 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:33:30,113 INFO L168 Benchmark]: RCFGBuilder took 449.57 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 135.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:33:30,117 INFO L168 Benchmark]: TraceAbstraction took 3995.01 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 134.3 MB in the beginning and 96.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:33:30,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.00 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 160.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.00 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.57 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 135.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3995.01 ms. Allocated memory was 203.9 MB in the beginning and 246.4 MB in the end (delta: 42.5 MB). Free memory was 134.3 MB in the beginning and 96.1 MB in the end (delta: 38.2 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 81 SDtfs, 143 SDslu, 128 SDs, 0 SdLazy, 52 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...