/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:23:23,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:23:23,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:23:23,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:23:23,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:23:23,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:23:23,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:23:23,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:23:23,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:23:23,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:23:23,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:23:23,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:23:23,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:23:23,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:23:23,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:23:23,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:23:23,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:23:23,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:23:23,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:23:23,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:23:23,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:23:23,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:23:23,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:23:23,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:23:23,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:23:23,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:23:23,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:23:23,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:23:23,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:23:23,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:23:23,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:23:23,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:23:23,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:23:23,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:23:23,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:23:23,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:23:23,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:23:23,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:23:23,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:23:23,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:23:23,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:23:23,639 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-NoLbe-McrStrategy.epf [2020-04-18 19:23:23,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:23:23,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:23:23,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:23:23,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:23:23,661 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:23:23,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:23:23,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:23:23,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:23:23,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:23:23,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:23:23,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:23:23,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:23:23,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:23:23,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:23:23,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:23:23,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:23:23,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:23:23,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:23:23,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:23:23,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:23:23,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:23:23,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:23:23,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:23:23,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:23:23,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:23:23,666 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:23:23,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:23:23,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:23:23,667 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:23:23,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:23:23,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:23:23,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:23:23,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:23:23,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:23:23,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:23:23,983 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:23:23,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-18 19:23:24,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf73d67c/78baad17cf2b42fcb1f7878065aea9e1/FLAG5d598b607 [2020-04-18 19:23:24,593 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:23:24,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-04-18 19:23:24,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf73d67c/78baad17cf2b42fcb1f7878065aea9e1/FLAG5d598b607 [2020-04-18 19:23:24,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf73d67c/78baad17cf2b42fcb1f7878065aea9e1 [2020-04-18 19:23:24,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:23:24,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:23:24,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:23:24,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:23:24,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:23:24,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:23:24" (1/1) ... [2020-04-18 19:23:24,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cdb82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:24, skipping insertion in model container [2020-04-18 19:23:24,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:23:24" (1/1) ... [2020-04-18 19:23:24,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:23:24,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:23:25,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:23:25,431 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:23:25,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:23:25,574 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:23:25,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25 WrapperNode [2020-04-18 19:23:25,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:23:25,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:23:25,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:23:25,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:23:25,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:23:25,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:23:25,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:23:25,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:23:25,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (1/1) ... [2020-04-18 19:23:25,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:23:25,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:23:25,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:23:25,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:23:25,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (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 19:23:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:23:25,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:23:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:23:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:23:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:23:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:23:25,719 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:23:25,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:23:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:23:25,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:23:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:23:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:23:25,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:23:25,723 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 19:23:26,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:23:26,089 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:23:26,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:23:26 BoogieIcfgContainer [2020-04-18 19:23:26,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:23:26,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:23:26,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:23:26,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:23:26,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:23:24" (1/3) ... [2020-04-18 19:23:26,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a59e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:23:26, skipping insertion in model container [2020-04-18 19:23:26,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:23:25" (2/3) ... [2020-04-18 19:23:26,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a59e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:23:26, skipping insertion in model container [2020-04-18 19:23:26,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:23:26" (3/3) ... [2020-04-18 19:23:26,101 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-04-18 19:23:26,111 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:23:26,111 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:23:26,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:23:26,118 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:23:26,151 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,151 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,152 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,152 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,154 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,154 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,155 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,155 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,156 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,156 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,157 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,157 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,157 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,157 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,158 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,159 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,165 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,166 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,166 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,166 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,175 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,175 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,177 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,177 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,181 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,181 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:23:26,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:23:26,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:23:26,229 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:23:26,229 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:23:26,229 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:23:26,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:23:26,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:23:26,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:23:26,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:23:26,250 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:23:26,763 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:23:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:23:26,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:23:26,800 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:26,801 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:26,801 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:26,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 1 times [2020-04-18 19:23:26,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:26,815 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [913970300] [2020-04-18 19:23:26,831 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:26,847 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:23:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:23:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:23:26,851 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:26,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 2 times [2020-04-18 19:23:26,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:26,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721432754] [2020-04-18 19:23:26,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:27,314 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 19:23:27,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721432754] [2020-04-18 19:23:27,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:27,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:27,318 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:27,321 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:27,334 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:23:27,334 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:27,400 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:23:27,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:23:27,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:23:27,406 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-04-18 19:23:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:27,487 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:23:27,487 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:23:27,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:27,488 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [913970300] [2020-04-18 19:23:27,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:27,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:27,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [913970300] [2020-04-18 19:23:27,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:23:27,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:27,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:23:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:23:27,497 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 7 states. [2020-04-18 19:23:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:28,082 INFO L93 Difference]: Finished difference Result 17026 states and 58584 transitions. [2020-04-18 19:23:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:23:28,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-04-18 19:23:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:28,161 INFO L225 Difference]: With dead ends: 17026 [2020-04-18 19:23:28,161 INFO L226 Difference]: Without dead ends: 5231 [2020-04-18 19:23:28,165 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:23:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2020-04-18 19:23:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 4391. [2020-04-18 19:23:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2020-04-18 19:23:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14777 transitions. [2020-04-18 19:23:28,548 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14777 transitions. Word has length 36 [2020-04-18 19:23:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:28,554 INFO L479 AbstractCegarLoop]: Abstraction has 4391 states and 14777 transitions. [2020-04-18 19:23:28,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:23:28,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14777 transitions. [2020-04-18 19:23:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:23:28,572 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:28,578 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:28,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash -431346913, now seen corresponding path program 1 times [2020-04-18 19:23:28,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:28,580 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1515781408] [2020-04-18 19:23:28,582 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:28,584 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 102 transitions. [2020-04-18 19:23:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-04-18 19:23:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:23:28,588 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:28,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:28,589 INFO L82 PathProgramCache]: Analyzing trace with hash -431346913, now seen corresponding path program 2 times [2020-04-18 19:23:28,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:28,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622332778] [2020-04-18 19:23:28,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:28,846 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 19:23:28,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622332778] [2020-04-18 19:23:28,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:28,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:28,847 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:28,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:28,857 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 78 transitions. [2020-04-18 19:23:28,858 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:29,010 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:23:29,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:29,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:29,011 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 8 states. [2020-04-18 19:23:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:29,144 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-04-18 19:23:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-04-18 19:23:29,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:29,145 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1515781408] [2020-04-18 19:23:29,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:29,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:29,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1515781408] [2020-04-18 19:23:29,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:23:29,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:29,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:29,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:23:29,147 INFO L87 Difference]: Start difference. First operand 4391 states and 14777 transitions. Second operand 8 states. [2020-04-18 19:23:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:29,639 INFO L93 Difference]: Finished difference Result 8266 states and 27377 transitions. [2020-04-18 19:23:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:23:29,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-04-18 19:23:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:29,780 INFO L225 Difference]: With dead ends: 8266 [2020-04-18 19:23:29,780 INFO L226 Difference]: Without dead ends: 5671 [2020-04-18 19:23:29,782 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:23:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2020-04-18 19:23:29,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 4511. [2020-04-18 19:23:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4511 states. [2020-04-18 19:23:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 15018 transitions. [2020-04-18 19:23:29,978 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 15018 transitions. Word has length 38 [2020-04-18 19:23:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:29,979 INFO L479 AbstractCegarLoop]: Abstraction has 4511 states and 15018 transitions. [2020-04-18 19:23:29,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:23:29,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 15018 transitions. [2020-04-18 19:23:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:23:29,990 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:29,990 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:29,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:29,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1206889500, now seen corresponding path program 1 times [2020-04-18 19:23:29,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:29,991 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [796790239] [2020-04-18 19:23:29,992 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:30,003 INFO L259 McrAutomatonBuilder]: Finished intersection with 181 states and 384 transitions. [2020-04-18 19:23:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-04-18 19:23:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:23:30,006 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1619935648, now seen corresponding path program 2 times [2020-04-18 19:23:30,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:30,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8063501] [2020-04-18 19:23:30,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:30,131 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 19:23:30,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8063501] [2020-04-18 19:23:30,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:30,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:30,132 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:30,136 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:30,172 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 264 transitions. [2020-04-18 19:23:30,173 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:30,248 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:23:30,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:30,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:30,248 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 8 states. [2020-04-18 19:23:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:30,347 INFO L93 Difference]: Finished difference Result 181 states and 384 transitions. [2020-04-18 19:23:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 384 transitions. [2020-04-18 19:23:30,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:30,350 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [796790239] [2020-04-18 19:23:30,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:30,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:30,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [796790239] [2020-04-18 19:23:30,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:23:30,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:30,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:23:30,352 INFO L87 Difference]: Start difference. First operand 4511 states and 15018 transitions. Second operand 8 states. [2020-04-18 19:23:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:30,496 INFO L93 Difference]: Finished difference Result 5961 states and 19573 transitions. [2020-04-18 19:23:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:23:30,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 19:23:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:30,517 INFO L225 Difference]: With dead ends: 5961 [2020-04-18 19:23:30,517 INFO L226 Difference]: Without dead ends: 2686 [2020-04-18 19:23:30,517 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:23:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2020-04-18 19:23:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2020-04-18 19:23:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2686 states. [2020-04-18 19:23:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 8644 transitions. [2020-04-18 19:23:30,620 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 8644 transitions. Word has length 40 [2020-04-18 19:23:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:30,621 INFO L479 AbstractCegarLoop]: Abstraction has 2686 states and 8644 transitions. [2020-04-18 19:23:30,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:23:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 8644 transitions. [2020-04-18 19:23:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:23:30,629 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:30,630 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:30,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:30,635 INFO L82 PathProgramCache]: Analyzing trace with hash -898847958, now seen corresponding path program 1 times [2020-04-18 19:23:30,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:30,636 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1962769960] [2020-04-18 19:23:30,639 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:31,027 INFO L259 McrAutomatonBuilder]: Finished intersection with 236 states and 525 transitions. [2020-04-18 19:23:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-04-18 19:23:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:23:31,031 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:31,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:31,031 INFO L82 PathProgramCache]: Analyzing trace with hash -898847958, now seen corresponding path program 2 times [2020-04-18 19:23:31,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:31,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986532502] [2020-04-18 19:23:31,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:31,221 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 19:23:31,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986532502] [2020-04-18 19:23:31,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:31,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:31,222 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:31,226 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:31,241 INFO L259 McrAutomatonBuilder]: Finished intersection with 137 states and 261 transitions. [2020-04-18 19:23:31,241 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:31,324 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:23:31,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:31,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:31,326 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 8 states. [2020-04-18 19:23:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:31,389 INFO L93 Difference]: Finished difference Result 236 states and 525 transitions. [2020-04-18 19:23:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 525 transitions. [2020-04-18 19:23:31,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:31,390 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1962769960] [2020-04-18 19:23:31,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:31,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:31,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1962769960] [2020-04-18 19:23:31,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:23:31,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:23:31,392 INFO L87 Difference]: Start difference. First operand 2686 states and 8644 transitions. Second operand 8 states. [2020-04-18 19:23:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:31,590 INFO L93 Difference]: Finished difference Result 3766 states and 12030 transitions. [2020-04-18 19:23:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:23:31,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-04-18 19:23:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:31,626 INFO L225 Difference]: With dead ends: 3766 [2020-04-18 19:23:31,627 INFO L226 Difference]: Without dead ends: 3206 [2020-04-18 19:23:31,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:23:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2020-04-18 19:23:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2446. [2020-04-18 19:23:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2020-04-18 19:23:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 7792 transitions. [2020-04-18 19:23:31,721 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 7792 transitions. Word has length 41 [2020-04-18 19:23:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:31,723 INFO L479 AbstractCegarLoop]: Abstraction has 2446 states and 7792 transitions. [2020-04-18 19:23:31,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:23:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 7792 transitions. [2020-04-18 19:23:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:23:31,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:31,729 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:31,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:31,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1987269953, now seen corresponding path program 1 times [2020-04-18 19:23:31,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:31,731 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [255202135] [2020-04-18 19:23:31,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:31,744 INFO L259 McrAutomatonBuilder]: Finished intersection with 548 states and 1567 transitions. [2020-04-18 19:23:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states. [2020-04-18 19:23:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:23:31,750 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:31,750 INFO L82 PathProgramCache]: Analyzing trace with hash -331896127, now seen corresponding path program 2 times [2020-04-18 19:23:31,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:31,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134165323] [2020-04-18 19:23:31,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:31,919 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 19:23:31,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134165323] [2020-04-18 19:23:31,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:31,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:31,920 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:31,924 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:31,952 INFO L259 McrAutomatonBuilder]: Finished intersection with 212 states and 478 transitions. [2020-04-18 19:23:31,952 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:32,061 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:23:32,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:32,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:32,062 INFO L87 Difference]: Start difference. First operand 548 states. Second operand 8 states. [2020-04-18 19:23:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:32,198 INFO L93 Difference]: Finished difference Result 620 states and 1729 transitions. [2020-04-18 19:23:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1729 transitions. [2020-04-18 19:23:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:23:32,200 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:23:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:32,201 INFO L82 PathProgramCache]: Analyzing trace with hash -354310007, now seen corresponding path program 3 times [2020-04-18 19:23:32,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:32,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164049601] [2020-04-18 19:23:32,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:32,350 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 19:23:32,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164049601] [2020-04-18 19:23:32,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:32,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:32,351 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:32,356 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:32,388 INFO L259 McrAutomatonBuilder]: Finished intersection with 263 states and 649 transitions. [2020-04-18 19:23:32,388 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:32,923 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 41 times. [2020-04-18 19:23:32,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 19:23:32,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:23:32,925 INFO L87 Difference]: Start difference. First operand 620 states and 1729 transitions. Second operand 26 states. [2020-04-18 19:23:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:33,048 INFO L93 Difference]: Finished difference Result 620 states and 1729 transitions. [2020-04-18 19:23:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1729 transitions. [2020-04-18 19:23:33,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:33,050 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [255202135] [2020-04-18 19:23:33,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:33,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:33,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [255202135] [2020-04-18 19:23:33,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 19:23:33,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:33,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 19:23:33,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1043, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:23:33,055 INFO L87 Difference]: Start difference. First operand 2446 states and 7792 transitions. Second operand 28 states. [2020-04-18 19:23:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:33,247 INFO L93 Difference]: Finished difference Result 2838 states and 8906 transitions. [2020-04-18 19:23:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:23:33,247 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 43 [2020-04-18 19:23:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:33,252 INFO L225 Difference]: With dead ends: 2838 [2020-04-18 19:23:33,252 INFO L226 Difference]: Without dead ends: 1248 [2020-04-18 19:23:33,254 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=498, Invalid=1224, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:23:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-04-18 19:23:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2020-04-18 19:23:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-04-18 19:23:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 3718 transitions. [2020-04-18 19:23:33,284 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 3718 transitions. Word has length 43 [2020-04-18 19:23:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:33,285 INFO L479 AbstractCegarLoop]: Abstraction has 1248 states and 3718 transitions. [2020-04-18 19:23:33,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 19:23:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 3718 transitions. [2020-04-18 19:23:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:23:33,288 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:33,288 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:33,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1198779817, now seen corresponding path program 1 times [2020-04-18 19:23:33,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:33,289 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1934023882] [2020-04-18 19:23:33,291 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:33,308 INFO L259 McrAutomatonBuilder]: Finished intersection with 720 states and 2132 transitions. [2020-04-18 19:23:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states. [2020-04-18 19:23:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:23:33,317 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:33,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2014062521, now seen corresponding path program 2 times [2020-04-18 19:23:33,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:33,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345230085] [2020-04-18 19:23:33,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:33,466 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 19:23:33,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345230085] [2020-04-18 19:23:33,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:33,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:33,467 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:33,491 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:33,526 INFO L259 McrAutomatonBuilder]: Finished intersection with 242 states and 549 transitions. [2020-04-18 19:23:33,527 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:33,597 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:23:33,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:33,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:33,598 INFO L87 Difference]: Start difference. First operand 720 states. Second operand 8 states. [2020-04-18 19:23:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:33,730 INFO L93 Difference]: Finished difference Result 816 states and 2356 transitions. [2020-04-18 19:23:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2356 transitions. [2020-04-18 19:23:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:23:33,732 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:23:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:33,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1198779817, now seen corresponding path program 3 times [2020-04-18 19:23:33,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:33,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147661441] [2020-04-18 19:23:33,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:33,845 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 19:23:33,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147661441] [2020-04-18 19:23:33,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:33,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:23:33,846 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:33,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:33,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 225 states and 509 transitions. [2020-04-18 19:23:33,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:33,956 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:23:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:23:33,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:23:33,957 INFO L87 Difference]: Start difference. First operand 816 states and 2356 transitions. Second operand 6 states. [2020-04-18 19:23:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:34,013 INFO L93 Difference]: Finished difference Result 816 states and 2356 transitions. [2020-04-18 19:23:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2356 transitions. [2020-04-18 19:23:34,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:34,018 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1934023882] [2020-04-18 19:23:34,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:34,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:23:34,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1934023882] [2020-04-18 19:23:34,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:23:34,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:23:34,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:23:34,020 INFO L87 Difference]: Start difference. First operand 1248 states and 3718 transitions. Second operand 12 states. [2020-04-18 19:23:34,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:34,324 INFO L93 Difference]: Finished difference Result 1449 states and 4269 transitions. [2020-04-18 19:23:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:23:34,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-04-18 19:23:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:34,327 INFO L225 Difference]: With dead ends: 1449 [2020-04-18 19:23:34,327 INFO L226 Difference]: Without dead ends: 1113 [2020-04-18 19:23:34,328 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:23:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-04-18 19:23:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2020-04-18 19:23:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2020-04-18 19:23:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 3268 transitions. [2020-04-18 19:23:34,354 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 3268 transitions. Word has length 44 [2020-04-18 19:23:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:34,355 INFO L479 AbstractCegarLoop]: Abstraction has 1113 states and 3268 transitions. [2020-04-18 19:23:34,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:23:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 3268 transitions. [2020-04-18 19:23:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:23:34,357 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:34,358 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:34,358 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1667749202, now seen corresponding path program 1 times [2020-04-18 19:23:34,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:34,359 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1862859730] [2020-04-18 19:23:34,360 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:34,378 INFO L259 McrAutomatonBuilder]: Finished intersection with 896 states and 2705 transitions. [2020-04-18 19:23:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states. [2020-04-18 19:23:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:23:34,388 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1431351284, now seen corresponding path program 2 times [2020-04-18 19:23:34,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:34,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992963390] [2020-04-18 19:23:34,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:34,482 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 19:23:34,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992963390] [2020-04-18 19:23:34,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:34,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:34,484 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:34,488 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:34,537 INFO L259 McrAutomatonBuilder]: Finished intersection with 218 states and 465 transitions. [2020-04-18 19:23:34,537 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:34,606 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:23:34,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:23:34,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:23:34,607 INFO L87 Difference]: Start difference. First operand 896 states. Second operand 8 states. [2020-04-18 19:23:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:34,728 INFO L93 Difference]: Finished difference Result 1016 states and 2991 transitions. [2020-04-18 19:23:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2991 transitions. [2020-04-18 19:23:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:23:34,732 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:23:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:34,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1408937404, now seen corresponding path program 3 times [2020-04-18 19:23:34,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:34,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110028472] [2020-04-18 19:23:34,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:34,811 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 19:23:34,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110028472] [2020-04-18 19:23:34,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:34,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:23:34,812 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:34,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:34,841 INFO L259 McrAutomatonBuilder]: Finished intersection with 203 states and 430 transitions. [2020-04-18 19:23:34,841 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:34,916 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:23:34,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:23:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:23:34,917 INFO L87 Difference]: Start difference. First operand 1016 states and 2991 transitions. Second operand 7 states. [2020-04-18 19:23:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:35,056 INFO L93 Difference]: Finished difference Result 1016 states and 2991 transitions. [2020-04-18 19:23:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2991 transitions. [2020-04-18 19:23:35,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:35,059 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1862859730] [2020-04-18 19:23:35,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:35,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:23:35,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1862859730] [2020-04-18 19:23:35,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:23:35,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:35,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:23:35,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:23:35,060 INFO L87 Difference]: Start difference. First operand 1113 states and 3268 transitions. Second operand 13 states. [2020-04-18 19:23:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:35,410 INFO L93 Difference]: Finished difference Result 1005 states and 2848 transitions. [2020-04-18 19:23:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 19:23:35,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-04-18 19:23:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:35,413 INFO L225 Difference]: With dead ends: 1005 [2020-04-18 19:23:35,413 INFO L226 Difference]: Without dead ends: 753 [2020-04-18 19:23:35,414 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:23:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-04-18 19:23:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2020-04-18 19:23:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-04-18 19:23:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 2083 transitions. [2020-04-18 19:23:35,431 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 2083 transitions. Word has length 45 [2020-04-18 19:23:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:35,432 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 2083 transitions. [2020-04-18 19:23:35,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:23:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 2083 transitions. [2020-04-18 19:23:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:23:35,434 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:23:35,434 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:23:35,434 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:23:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:35,434 INFO L82 PathProgramCache]: Analyzing trace with hash -621987497, now seen corresponding path program 1 times [2020-04-18 19:23:35,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:23:35,435 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1141525202] [2020-04-18 19:23:35,436 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:35,459 INFO L259 McrAutomatonBuilder]: Finished intersection with 1111 states and 3422 transitions. [2020-04-18 19:23:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states. [2020-04-18 19:23:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:23:35,471 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:23:35,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:35,471 INFO L82 PathProgramCache]: Analyzing trace with hash -858385415, now seen corresponding path program 2 times [2020-04-18 19:23:35,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:35,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941005018] [2020-04-18 19:23:35,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:35,537 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 19:23:35,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941005018] [2020-04-18 19:23:35,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:35,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:23:35,538 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:35,542 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:35,565 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 376 transitions. [2020-04-18 19:23:35,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:35,596 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:23:35,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:23:35,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:23:35,597 INFO L87 Difference]: Start difference. First operand 1111 states. Second operand 6 states. [2020-04-18 19:23:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:35,713 INFO L93 Difference]: Finished difference Result 1261 states and 3787 transitions. [2020-04-18 19:23:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 3787 transitions. [2020-04-18 19:23:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:23:35,716 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:23:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:23:35,716 INFO L82 PathProgramCache]: Analyzing trace with hash -880799295, now seen corresponding path program 3 times [2020-04-18 19:23:35,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:23:35,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640465835] [2020-04-18 19:23:35,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:23:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:23:35,805 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 19:23:35,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640465835] [2020-04-18 19:23:35,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:23:35,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:23:35,807 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:23:35,813 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:23:35,843 INFO L259 McrAutomatonBuilder]: Finished intersection with 183 states and 376 transitions. [2020-04-18 19:23:35,844 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:23:35,963 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:23:35,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:23:35,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:23:35,963 INFO L87 Difference]: Start difference. First operand 1261 states and 3787 transitions. Second operand 9 states. [2020-04-18 19:23:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:36,214 INFO L93 Difference]: Finished difference Result 1261 states and 3787 transitions. [2020-04-18 19:23:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 3787 transitions. [2020-04-18 19:23:36,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:36,217 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1141525202] [2020-04-18 19:23:36,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:23:36,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:23:36,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1141525202] [2020-04-18 19:23:36,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:23:36,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:23:36,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:23:36,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:23:36,219 INFO L87 Difference]: Start difference. First operand 753 states and 2083 transitions. Second operand 13 states. [2020-04-18 19:23:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:23:36,355 INFO L93 Difference]: Finished difference Result 456 states and 1192 transitions. [2020-04-18 19:23:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 19:23:36,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-04-18 19:23:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:23:36,356 INFO L225 Difference]: With dead ends: 456 [2020-04-18 19:23:36,356 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:23:36,356 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=845, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:23:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:23:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:23:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:23:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:23:36,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 19:23:36,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:23:36,357 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:23:36,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:23:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:23:36,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:23:36,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:23:36 BasicIcfg [2020-04-18 19:23:36,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:23:36,364 INFO L168 Benchmark]: Toolchain (without parser) took 11478.36 ms. Allocated memory was 137.9 MB in the beginning and 538.4 MB in the end (delta: 400.6 MB). Free memory was 101.3 MB in the beginning and 380.9 MB in the end (delta: -279.6 MB). Peak memory consumption was 121.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:23:36,365 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 19:23:36,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.60 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 155.9 MB in the end (delta: -56.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:23:36,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.55 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:23:36,367 INFO L168 Benchmark]: Boogie Preprocessor took 23.57 ms. Allocated memory is still 201.3 MB. Free memory was 153.8 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:23:36,367 INFO L168 Benchmark]: RCFGBuilder took 446.16 ms. Allocated memory is still 201.3 MB. Free memory was 152.5 MB in the beginning and 130.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:23:36,368 INFO L168 Benchmark]: TraceAbstraction took 10267.82 ms. Allocated memory was 201.3 MB in the beginning and 538.4 MB in the end (delta: 337.1 MB). Free memory was 129.5 MB in the beginning and 380.9 MB in the end (delta: -251.4 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:23:36,371 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.60 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 155.9 MB in the end (delta: -56.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.55 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.57 ms. Allocated memory is still 201.3 MB. Free memory was 153.8 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.16 ms. Allocated memory is still 201.3 MB. Free memory was 152.5 MB in the beginning and 130.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10267.82 ms. Allocated memory was 201.3 MB in the beginning and 538.4 MB in the end (delta: 337.1 MB). Free memory was 129.5 MB in the beginning and 380.9 MB in the end (delta: -251.4 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 716 SDtfs, 1887 SDslu, 3488 SDs, 0 SdLazy, 530 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 767 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2760 StatesRemovedByMinimization, 3 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...