/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/safe037_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:43,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:43,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:43,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:43,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:43,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:43,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:43,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:43,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:43,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:43,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:43,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:43,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:43,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:43,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:43,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:43,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:43,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:43,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:43,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:43,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:43,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:43,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:43,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:43,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:43,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:43,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:43,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:43,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:43,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:43,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:43,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:43,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:43,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:43,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:43,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:43,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:43,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:43,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:43,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:43,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:43,606 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 11:27:43,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:43,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:43,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:43,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:43,622 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:43,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:43,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:43,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:43,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:43,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:43,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:43,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:43,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:43,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:43,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:43,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:43,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:43,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:43,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:43,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:43,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:43,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:43,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:43,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:43,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:43,626 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:43,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:43,628 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:43,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:43,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:43,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:43,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:43,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:43,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:43,900 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:43,901 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2020-04-18 11:27:43,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3ebe20e/e485e5ec4250424b8746915fb8ca75f6/FLAGf3ebe9aa2 [2020-04-18 11:27:44,536 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:44,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2020-04-18 11:27:44,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3ebe20e/e485e5ec4250424b8746915fb8ca75f6/FLAGf3ebe9aa2 [2020-04-18 11:27:44,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3ebe20e/e485e5ec4250424b8746915fb8ca75f6 [2020-04-18 11:27:44,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:44,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:44,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:44,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:44,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:44,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:44" (1/1) ... [2020-04-18 11:27:44,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30593eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:44, skipping insertion in model container [2020-04-18 11:27:44,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:44" (1/1) ... [2020-04-18 11:27:44,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:44,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:45,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:45,404 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:45,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:45,546 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:45,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45 WrapperNode [2020-04-18 11:27:45,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:45,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:45,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:45,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:45,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:45,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:45,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:45,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:45,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (1/1) ... [2020-04-18 11:27:45,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:45,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:45,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:45,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:45,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (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 11:27:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:45,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:45,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:27:45,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:27:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:45,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:45,705 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 11:27:46,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:46,092 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:46,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:46 BoogieIcfgContainer [2020-04-18 11:27:46,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:46,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:46,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:46,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:44" (1/3) ... [2020-04-18 11:27:46,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1741431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:46, skipping insertion in model container [2020-04-18 11:27:46,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:45" (2/3) ... [2020-04-18 11:27:46,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1741431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:46, skipping insertion in model container [2020-04-18 11:27:46,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:46" (3/3) ... [2020-04-18 11:27:46,105 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_pso.opt.i [2020-04-18 11:27:46,112 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:46,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:46,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:46,119 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:46,143 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,144 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,144 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,144 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,145 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,145 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,146 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,146 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,146 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,146 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,147 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,147 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,148 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,148 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,148 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,148 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,149 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,149 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,154 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,154 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,162 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,162 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,162 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,163 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,181 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,182 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:46,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 11:27:46,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:46,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:46,214 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:46,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:46,215 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:46,215 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:46,215 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:46,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:46,234 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:46,237 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:46,283 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:46,284 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:46,291 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:46,294 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 11:27:46,322 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 11:27:46,324 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:46,325 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 11:27:46,327 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 11:27:46,330 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:47,735 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 11:27:47,843 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2315 [2020-04-18 11:27:47,843 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 11:27:47,847 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 11:27:47,876 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 11:27:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 11:27:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:47,886 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:47,887 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:47,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 1 times [2020-04-18 11:27:47,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:47,901 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1372434992] [2020-04-18 11:27:47,912 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:47,921 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:27:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:27:47,923 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash 385809968, now seen corresponding path program 2 times [2020-04-18 11:27:47,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:47,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239955407] [2020-04-18 11:27:47,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:48,163 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 11:27:48,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239955407] [2020-04-18 11:27:48,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:48,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:48,167 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:48,167 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,174 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:27:48,175 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:48,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:48,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:48,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:48,185 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 11:27:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,189 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:27:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:27:48,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:48,190 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1372434992] [2020-04-18 11:27:48,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:48,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:48,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1372434992] [2020-04-18 11:27:48,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:27:48,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:48,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:27:48,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:48,198 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 11:27:48,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,232 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 11:27:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:27:48,236 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 11:27:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:48,270 INFO L225 Difference]: With dead ends: 362 [2020-04-18 11:27:48,276 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 11:27:48,277 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:27:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 11:27:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 11:27:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 11:27:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 11:27:48,366 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 11:27:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:48,367 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 11:27:48,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:27:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 11:27:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:48,369 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:48,369 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:48,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 1 times [2020-04-18 11:27:48,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:48,370 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1184945662] [2020-04-18 11:27:48,371 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,371 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:27:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:48,372 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -924796273, now seen corresponding path program 2 times [2020-04-18 11:27:48,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:48,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963834520] [2020-04-18 11:27:48,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:48,468 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 11:27:48,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963834520] [2020-04-18 11:27:48,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:48,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:48,470 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:48,470 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,473 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:48,473 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:48,478 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:48,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:48,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:48,479 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-04-18 11:27:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,481 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 11:27:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 11:27:48,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:48,482 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1184945662] [2020-04-18 11:27:48,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:48,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:48,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1184945662] [2020-04-18 11:27:48,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:27:48,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:48,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:27:48,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:27:48,484 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-18 11:27:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,500 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-18 11:27:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:27:48,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 11:27:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:48,502 INFO L225 Difference]: With dead ends: 217 [2020-04-18 11:27:48,502 INFO L226 Difference]: Without dead ends: 217 [2020-04-18 11:27:48,504 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 11:27:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-18 11:27:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-18 11:27:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-18 11:27:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-18 11:27:48,530 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-18 11:27:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:48,531 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-18 11:27:48,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:27:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-18 11:27:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:48,532 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:48,533 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:48,533 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 1 times [2020-04-18 11:27:48,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:48,536 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1230188016] [2020-04-18 11:27:48,537 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,538 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 54 transitions. [2020-04-18 11:27:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:27:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:48,540 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1123394358, now seen corresponding path program 2 times [2020-04-18 11:27:48,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:48,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001016325] [2020-04-18 11:27:48,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:48,650 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 11:27:48,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001016325] [2020-04-18 11:27:48,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:48,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:48,653 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:48,654 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,657 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-04-18 11:27:48,657 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:48,665 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:48,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:48,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:48,666 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 11:27:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,673 INFO L93 Difference]: Finished difference Result 34 states and 54 transitions. [2020-04-18 11:27:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2020-04-18 11:27:48,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:48,674 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1230188016] [2020-04-18 11:27:48,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:48,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:48,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1230188016] [2020-04-18 11:27:48,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:48,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:48,676 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-18 11:27:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,695 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-18 11:27:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:27:48,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 11:27:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:48,697 INFO L225 Difference]: With dead ends: 136 [2020-04-18 11:27:48,697 INFO L226 Difference]: Without dead ends: 136 [2020-04-18 11:27:48,697 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-18 11:27:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-18 11:27:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-18 11:27:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-18 11:27:48,704 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-18 11:27:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:48,704 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-18 11:27:48,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-18 11:27:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:48,706 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:48,706 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:48,706 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,707 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 1 times [2020-04-18 11:27:48,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:48,707 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [525391268] [2020-04-18 11:27:48,708 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,710 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 174 transitions. [2020-04-18 11:27:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-04-18 11:27:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:27:48,712 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash -104701845, now seen corresponding path program 2 times [2020-04-18 11:27:48,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:48,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460667442] [2020-04-18 11:27:48,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:48,771 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 11:27:48,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460667442] [2020-04-18 11:27:48,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:48,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:48,773 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:48,774 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,778 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 11:27:48,778 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:48,789 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:48,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:48,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:48,789 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 5 states. [2020-04-18 11:27:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,802 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-18 11:27:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-18 11:27:48,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:48,803 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [525391268] [2020-04-18 11:27:48,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:48,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:48,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [525391268] [2020-04-18 11:27:48,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:27:48,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:48,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:48,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:48,805 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-18 11:27:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:48,828 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-18 11:27:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:27:48,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 11:27:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:48,830 INFO L225 Difference]: With dead ends: 109 [2020-04-18 11:27:48,830 INFO L226 Difference]: Without dead ends: 109 [2020-04-18 11:27:48,830 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-18 11:27:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-18 11:27:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-18 11:27:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-18 11:27:48,835 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-18 11:27:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:48,835 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-18 11:27:48,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:27:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-18 11:27:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:48,837 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:48,837 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:48,837 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:48,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 1 times [2020-04-18 11:27:48,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:48,838 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1712032573] [2020-04-18 11:27:48,839 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,847 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 11:27:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 11:27:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:48,852 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:48,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:48,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1786856379, now seen corresponding path program 2 times [2020-04-18 11:27:48,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:48,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993301819] [2020-04-18 11:27:48,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:48,927 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 11:27:48,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993301819] [2020-04-18 11:27:48,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:48,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:48,928 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:48,930 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:48,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 11:27:48,937 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:48,956 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:27:48,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:48,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:48,957 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 11:27:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,017 INFO L93 Difference]: Finished difference Result 442 states and 1236 transitions. [2020-04-18 11:27:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1236 transitions. [2020-04-18 11:27:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:49,019 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1847699439, now seen corresponding path program 3 times [2020-04-18 11:27:49,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41483318] [2020-04-18 11:27:49,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:49,059 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 11:27:49,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41483318] [2020-04-18 11:27:49,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:49,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:49,060 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:49,062 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 86 transitions. [2020-04-18 11:27:49,068 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:49,093 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:49,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:49,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:27:49,094 INFO L87 Difference]: Start difference. First operand 442 states and 1236 transitions. Second operand 5 states. [2020-04-18 11:27:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,127 INFO L93 Difference]: Finished difference Result 448 states and 1240 transitions. [2020-04-18 11:27:49,128 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1240 transitions. [2020-04-18 11:27:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:49,129 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:49,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash -739037833, now seen corresponding path program 4 times [2020-04-18 11:27:49,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086085108] [2020-04-18 11:27:49,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:49,179 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 11:27:49,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086085108] [2020-04-18 11:27:49,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:49,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:49,180 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:49,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 78 transitions. [2020-04-18 11:27:49,188 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:49,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:49,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:27:49,211 INFO L87 Difference]: Start difference. First operand 448 states and 1240 transitions. Second operand 5 states. [2020-04-18 11:27:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,250 INFO L93 Difference]: Finished difference Result 718 states and 1888 transitions. [2020-04-18 11:27:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1888 transitions. [2020-04-18 11:27:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:27:49,253 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:49,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:49,253 INFO L82 PathProgramCache]: Analyzing trace with hash -845563335, now seen corresponding path program 5 times [2020-04-18 11:27:49,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:49,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311534219] [2020-04-18 11:27:49,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:49,296 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 11:27:49,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311534219] [2020-04-18 11:27:49,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:49,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:49,297 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:49,298 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:49,301 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 38 transitions. [2020-04-18 11:27:49,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:49,378 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:27:49,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:27:49,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:27:49,379 INFO L87 Difference]: Start difference. First operand 718 states and 1888 transitions. Second operand 6 states. [2020-04-18 11:27:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:49,436 INFO L93 Difference]: Finished difference Result 1235 states and 3060 transitions. [2020-04-18 11:27:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 3060 transitions. [2020-04-18 11:27:49,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:49,441 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1712032573] [2020-04-18 11:27:49,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:49,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:27:49,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1712032573] [2020-04-18 11:27:49,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:27:49,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:49,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:27:49,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:27:49,444 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 13 states. [2020-04-18 11:27:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:51,005 INFO L93 Difference]: Finished difference Result 240 states and 478 transitions. [2020-04-18 11:27:51,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 11:27:51,005 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 11:27:51,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:51,006 INFO L225 Difference]: With dead ends: 240 [2020-04-18 11:27:51,006 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:51,008 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1248, Invalid=5232, Unknown=0, NotChecked=0, Total=6480 [2020-04-18 11:27:51,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:51,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 11:27:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:51,009 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:51,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:27:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:51,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:51,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:51 BasicIcfg [2020-04-18 11:27:51,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:51,015 INFO L168 Benchmark]: Toolchain (without parser) took 6141.28 ms. Allocated memory was 138.9 MB in the beginning and 284.2 MB in the end (delta: 145.2 MB). Free memory was 101.6 MB in the beginning and 242.7 MB in the end (delta: -141.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:51,016 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:51,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.11 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 157.9 MB in the end (delta: -58.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:51,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.52 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:51,018 INFO L168 Benchmark]: Boogie Preprocessor took 31.43 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:51,019 INFO L168 Benchmark]: RCFGBuilder took 449.70 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:51,020 INFO L168 Benchmark]: TraceAbstraction took 4915.56 ms. Allocated memory was 202.9 MB in the beginning and 284.2 MB in the end (delta: 81.3 MB). Free memory was 131.2 MB in the beginning and 242.7 MB in the end (delta: -111.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:27:51,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.11 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 157.9 MB in the end (delta: -58.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.52 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.43 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.70 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4915.56 ms. Allocated memory was 202.9 MB in the beginning and 284.2 MB in the end (delta: 81.3 MB). Free memory was 131.2 MB in the beginning and 242.7 MB in the end (delta: -111.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 663 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2315 CheckedPairsTotal, 57 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 106 SDtfs, 192 SDslu, 293 SDs, 0 SdLazy, 349 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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...