/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:39:50,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:39:50,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:39:50,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:39:50,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:39:50,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:39:50,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:39:50,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:39:50,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:39:50,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:39:50,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:39:50,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:39:50,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:39:50,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:39:50,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:39:50,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:39:50,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:39:50,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:39:50,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:39:50,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:39:50,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:39:50,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:39:50,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:39:50,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:39:50,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:39:50,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:39:50,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:39:50,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:39:50,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:39:50,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:39:50,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:39:50,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:39:50,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:39:50,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:39:50,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:39:50,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:39:50,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:39:50,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:39:50,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:39:50,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:39:50,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:39:50,519 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.epf [2020-04-18 06:39:50,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:39:50,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:39:50,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:39:50,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:39:50,541 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:39:50,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:39:50,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:39:50,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:39:50,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:39:50,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:39:50,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:39:50,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:39:50,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:39:50,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:39:50,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:39:50,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:39:50,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:39:50,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:39:50,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:39:50,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:39:50,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:39:50,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:39:50,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:39:50,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:39:50,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:39:50,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:39:50,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:39:50,545 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:39:50,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:39:50,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:39:50,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:39:50,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:39:50,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:39:50,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:39:50,816 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:39:50,816 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-04-18 06:39:50,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b37c4557a/53894ba3e37e42a6ba5e2b86caa9c1f2/FLAG56044466e [2020-04-18 06:39:51,477 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:39:51,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-04-18 06:39:51,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b37c4557a/53894ba3e37e42a6ba5e2b86caa9c1f2/FLAG56044466e [2020-04-18 06:39:51,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b37c4557a/53894ba3e37e42a6ba5e2b86caa9c1f2 [2020-04-18 06:39:51,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:39:51,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:39:51,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:39:51,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:39:51,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:39:51,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:39:51" (1/1) ... [2020-04-18 06:39:51,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d934201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:51, skipping insertion in model container [2020-04-18 06:39:51,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:39:51" (1/1) ... [2020-04-18 06:39:51,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:39:51,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:39:52,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:39:52,384 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:39:52,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:39:52,542 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:39:52,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52 WrapperNode [2020-04-18 06:39:52,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:39:52,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:39:52,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:39:52,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:39:52,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:39:52,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:39:52,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:39:52,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:39:52,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (1/1) ... [2020-04-18 06:39:52,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:39:52,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:39:52,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:39:52,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:39:52,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (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 06:39:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:39:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:39:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:39:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:39:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:39:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:39:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:39:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:39:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:39:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:39:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:39:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:39:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:39:52,721 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 06:39:53,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:39:53,110 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:39:53,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:39:53 BoogieIcfgContainer [2020-04-18 06:39:53,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:39:53,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:39:53,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:39:53,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:39:53,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:39:51" (1/3) ... [2020-04-18 06:39:53,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9e240e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:39:53, skipping insertion in model container [2020-04-18 06:39:53,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:39:52" (2/3) ... [2020-04-18 06:39:53,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9e240e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:39:53, skipping insertion in model container [2020-04-18 06:39:53,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:39:53" (3/3) ... [2020-04-18 06:39:53,122 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-04-18 06:39:53,132 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:39:53,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:39:53,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:39:53,141 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:39:53,167 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,167 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,168 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,168 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,169 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,169 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,170 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,170 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,170 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,171 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,171 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,171 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,172 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,172 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,172 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,172 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,173 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,177 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,177 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,178 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,178 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,184 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,188 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,188 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,188 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,188 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:39:53,209 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:39:53,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:39:53,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:39:53,228 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:39:53,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:39:53,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:39:53,229 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:39:53,229 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:39:53,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:39:53,242 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 06:39:53,739 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8471 states. [2020-04-18 06:39:53,742 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states. [2020-04-18 06:39:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 06:39:53,770 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:53,771 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] [2020-04-18 06:39:53,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1532593683, now seen corresponding path program 1 times [2020-04-18 06:39:53,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:53,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312510529] [2020-04-18 06:39:53,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:54,270 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 06:39:54,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312510529] [2020-04-18 06:39:54,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:54,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:39:54,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107775437] [2020-04-18 06:39:54,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:39:54,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:54,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:39:54,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:39:54,297 INFO L87 Difference]: Start difference. First operand 8471 states. Second operand 7 states. [2020-04-18 06:39:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:54,987 INFO L93 Difference]: Finished difference Result 18203 states and 62568 transitions. [2020-04-18 06:39:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:39:54,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-04-18 06:39:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:55,059 INFO L225 Difference]: With dead ends: 18203 [2020-04-18 06:39:55,059 INFO L226 Difference]: Without dead ends: 5701 [2020-04-18 06:39:55,063 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:39:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2020-04-18 06:39:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 4693. [2020-04-18 06:39:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2020-04-18 06:39:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 15602 transitions. [2020-04-18 06:39:55,489 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 15602 transitions. Word has length 35 [2020-04-18 06:39:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:55,491 INFO L479 AbstractCegarLoop]: Abstraction has 4693 states and 15602 transitions. [2020-04-18 06:39:55,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:39:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 15602 transitions. [2020-04-18 06:39:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:39:55,506 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:55,506 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 06:39:55,507 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:55,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1078623240, now seen corresponding path program 1 times [2020-04-18 06:39:55,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:55,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284056775] [2020-04-18 06:39:55,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:55,742 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 06:39:55,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284056775] [2020-04-18 06:39:55,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:55,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:39:55,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136889039] [2020-04-18 06:39:55,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:39:55,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:55,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:39:55,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:39:55,746 INFO L87 Difference]: Start difference. First operand 4693 states and 15602 transitions. Second operand 7 states. [2020-04-18 06:39:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:56,104 INFO L93 Difference]: Finished difference Result 6869 states and 22561 transitions. [2020-04-18 06:39:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:39:56,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 06:39:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:56,143 INFO L225 Difference]: With dead ends: 6869 [2020-04-18 06:39:56,144 INFO L226 Difference]: Without dead ends: 5417 [2020-04-18 06:39:56,145 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:39:56,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2020-04-18 06:39:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 4475. [2020-04-18 06:39:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2020-04-18 06:39:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 14788 transitions. [2020-04-18 06:39:56,419 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 14788 transitions. Word has length 38 [2020-04-18 06:39:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:56,422 INFO L479 AbstractCegarLoop]: Abstraction has 4475 states and 14788 transitions. [2020-04-18 06:39:56,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:39:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 14788 transitions. [2020-04-18 06:39:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 06:39:56,435 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:56,436 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] [2020-04-18 06:39:56,436 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:56,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:56,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1457479407, now seen corresponding path program 1 times [2020-04-18 06:39:56,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:56,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240299984] [2020-04-18 06:39:56,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:56,634 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 06:39:56,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240299984] [2020-04-18 06:39:56,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:56,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:39:56,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126542555] [2020-04-18 06:39:56,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:39:56,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:56,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:39:56,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:39:56,637 INFO L87 Difference]: Start difference. First operand 4475 states and 14788 transitions. Second operand 7 states. [2020-04-18 06:39:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:56,962 INFO L93 Difference]: Finished difference Result 6357 states and 20768 transitions. [2020-04-18 06:39:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:39:56,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 06:39:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:57,000 INFO L225 Difference]: With dead ends: 6357 [2020-04-18 06:39:57,001 INFO L226 Difference]: Without dead ends: 5145 [2020-04-18 06:39:57,001 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:39:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5145 states. [2020-04-18 06:39:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5145 to 4184. [2020-04-18 06:39:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2020-04-18 06:39:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 13749 transitions. [2020-04-18 06:39:57,158 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 13749 transitions. Word has length 39 [2020-04-18 06:39:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:57,158 INFO L479 AbstractCegarLoop]: Abstraction has 4184 states and 13749 transitions. [2020-04-18 06:39:57,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:39:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 13749 transitions. [2020-04-18 06:39:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:39:57,171 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:57,171 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 06:39:57,172 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:57,172 INFO L82 PathProgramCache]: Analyzing trace with hash -900130073, now seen corresponding path program 1 times [2020-04-18 06:39:57,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:57,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684460594] [2020-04-18 06:39:57,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:57,442 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-04-18 06:39:57,488 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 06:39:57,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684460594] [2020-04-18 06:39:57,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:57,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:39:57,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552919876] [2020-04-18 06:39:57,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:39:57,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:57,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:39:57,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:39:57,490 INFO L87 Difference]: Start difference. First operand 4184 states and 13749 transitions. Second operand 6 states. [2020-04-18 06:39:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:57,620 INFO L93 Difference]: Finished difference Result 4504 states and 14705 transitions. [2020-04-18 06:39:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:39:57,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-04-18 06:39:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:57,635 INFO L225 Difference]: With dead ends: 4504 [2020-04-18 06:39:57,635 INFO L226 Difference]: Without dead ends: 3944 [2020-04-18 06:39:57,636 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:39:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2020-04-18 06:39:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3656. [2020-04-18 06:39:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2020-04-18 06:39:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 11985 transitions. [2020-04-18 06:39:57,746 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 11985 transitions. Word has length 40 [2020-04-18 06:39:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:57,747 INFO L479 AbstractCegarLoop]: Abstraction has 3656 states and 11985 transitions. [2020-04-18 06:39:57,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:39:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 11985 transitions. [2020-04-18 06:39:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:39:57,756 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:57,757 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 06:39:57,757 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash 51398341, now seen corresponding path program 1 times [2020-04-18 06:39:57,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:57,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321064505] [2020-04-18 06:39:57,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:57,892 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 06:39:57,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321064505] [2020-04-18 06:39:57,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:57,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:39:57,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669864330] [2020-04-18 06:39:57,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:39:57,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:57,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:39:57,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:39:57,895 INFO L87 Difference]: Start difference. First operand 3656 states and 11985 transitions. Second operand 8 states. [2020-04-18 06:39:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:58,059 INFO L93 Difference]: Finished difference Result 6609 states and 21445 transitions. [2020-04-18 06:39:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:39:58,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-04-18 06:39:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:58,078 INFO L225 Difference]: With dead ends: 6609 [2020-04-18 06:39:58,079 INFO L226 Difference]: Without dead ends: 4632 [2020-04-18 06:39:58,079 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:39:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2020-04-18 06:39:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 3656. [2020-04-18 06:39:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2020-04-18 06:39:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 11936 transitions. [2020-04-18 06:39:58,651 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 11936 transitions. Word has length 41 [2020-04-18 06:39:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:58,652 INFO L479 AbstractCegarLoop]: Abstraction has 3656 states and 11936 transitions. [2020-04-18 06:39:58,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:39:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 11936 transitions. [2020-04-18 06:39:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:39:58,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:58,664 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 06:39:58,664 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2076386273, now seen corresponding path program 2 times [2020-04-18 06:39:58,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:58,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978148598] [2020-04-18 06:39:58,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:58,817 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 06:39:58,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978148598] [2020-04-18 06:39:58,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:58,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:39:58,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369223350] [2020-04-18 06:39:58,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:39:58,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:58,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:39:58,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:39:58,820 INFO L87 Difference]: Start difference. First operand 3656 states and 11936 transitions. Second operand 8 states. [2020-04-18 06:39:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:58,959 INFO L93 Difference]: Finished difference Result 4716 states and 15155 transitions. [2020-04-18 06:39:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 06:39:58,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-04-18 06:39:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:58,968 INFO L225 Difference]: With dead ends: 4716 [2020-04-18 06:39:58,968 INFO L226 Difference]: Without dead ends: 2249 [2020-04-18 06:39:58,968 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 06:39:58,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2020-04-18 06:39:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2057. [2020-04-18 06:39:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2057 states. [2020-04-18 06:39:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 6375 transitions. [2020-04-18 06:39:59,023 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 6375 transitions. Word has length 41 [2020-04-18 06:39:59,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:59,023 INFO L479 AbstractCegarLoop]: Abstraction has 2057 states and 6375 transitions. [2020-04-18 06:39:59,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:39:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 6375 transitions. [2020-04-18 06:39:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 06:39:59,029 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:59,029 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] [2020-04-18 06:39:59,029 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:59,030 INFO L82 PathProgramCache]: Analyzing trace with hash 96261440, now seen corresponding path program 1 times [2020-04-18 06:39:59,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:59,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425132391] [2020-04-18 06:39:59,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:59,138 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 06:39:59,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425132391] [2020-04-18 06:39:59,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:59,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:39:59,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767055630] [2020-04-18 06:39:59,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:39:59,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:59,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:39:59,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:39:59,140 INFO L87 Difference]: Start difference. First operand 2057 states and 6375 transitions. Second operand 6 states. [2020-04-18 06:39:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:59,267 INFO L93 Difference]: Finished difference Result 2534 states and 7733 transitions. [2020-04-18 06:39:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:39:59,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-04-18 06:39:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:59,276 INFO L225 Difference]: With dead ends: 2534 [2020-04-18 06:39:59,277 INFO L226 Difference]: Without dead ends: 1838 [2020-04-18 06:39:59,277 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:39:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-04-18 06:39:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1838. [2020-04-18 06:39:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-04-18 06:39:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 5580 transitions. [2020-04-18 06:39:59,327 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 5580 transitions. Word has length 42 [2020-04-18 06:39:59,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:59,327 INFO L479 AbstractCegarLoop]: Abstraction has 1838 states and 5580 transitions. [2020-04-18 06:39:59,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:39:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 5580 transitions. [2020-04-18 06:39:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 06:39:59,332 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:59,332 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 06:39:59,332 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:59,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1641822891, now seen corresponding path program 1 times [2020-04-18 06:39:59,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:59,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060347134] [2020-04-18 06:39:59,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:59,438 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 06:39:59,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060347134] [2020-04-18 06:39:59,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:59,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:39:59,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953636164] [2020-04-18 06:39:59,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:39:59,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:39:59,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:39:59,441 INFO L87 Difference]: Start difference. First operand 1838 states and 5580 transitions. Second operand 7 states. [2020-04-18 06:39:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:59,581 INFO L93 Difference]: Finished difference Result 1775 states and 5214 transitions. [2020-04-18 06:39:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:39:59,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-04-18 06:39:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:59,586 INFO L225 Difference]: With dead ends: 1775 [2020-04-18 06:39:59,587 INFO L226 Difference]: Without dead ends: 1227 [2020-04-18 06:39:59,587 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:39:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-04-18 06:39:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2020-04-18 06:39:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-04-18 06:39:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3514 transitions. [2020-04-18 06:39:59,617 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3514 transitions. Word has length 43 [2020-04-18 06:39:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:59,617 INFO L479 AbstractCegarLoop]: Abstraction has 1227 states and 3514 transitions. [2020-04-18 06:39:59,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:39:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3514 transitions. [2020-04-18 06:39:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 06:39:59,620 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:39:59,621 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 06:39:59,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:39:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:39:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1594703724, now seen corresponding path program 1 times [2020-04-18 06:39:59,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:39:59,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178657353] [2020-04-18 06:39:59,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:39:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:39:59,747 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 06:39:59,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178657353] [2020-04-18 06:39:59,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:39:59,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:39:59,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164453906] [2020-04-18 06:39:59,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:39:59,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:39:59,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:39:59,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:39:59,751 INFO L87 Difference]: Start difference. First operand 1227 states and 3514 transitions. Second operand 8 states. [2020-04-18 06:39:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:39:59,887 INFO L93 Difference]: Finished difference Result 795 states and 2191 transitions. [2020-04-18 06:39:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 06:39:59,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-04-18 06:39:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:39:59,888 INFO L225 Difference]: With dead ends: 795 [2020-04-18 06:39:59,888 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:39:59,888 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:39:59,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:39:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:39:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:39:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:39:59,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 06:39:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:39:59,895 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:39:59,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:39:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:39:59,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:39:59,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:39:59 BasicIcfg [2020-04-18 06:39:59,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:39:59,908 INFO L168 Benchmark]: Toolchain (without parser) took 8157.82 ms. Allocated memory was 138.9 MB in the beginning and 471.3 MB in the end (delta: 332.4 MB). Free memory was 100.8 MB in the beginning and 395.4 MB in the end (delta: -294.6 MB). Peak memory consumption was 274.7 MB. Max. memory is 7.1 GB. [2020-04-18 06:39:59,909 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 06:39:59,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.22 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 99.0 MB in the beginning and 161.7 MB in the end (delta: -62.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:39:59,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.44 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 158.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-04-18 06:39:59,917 INFO L168 Benchmark]: Boogie Preprocessor took 39.23 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.9 MB in the end (delta: 949.6 kB). Peak memory consumption was 949.6 kB. Max. memory is 7.1 GB. [2020-04-18 06:39:59,918 INFO L168 Benchmark]: RCFGBuilder took 469.32 ms. Allocated memory is still 204.5 MB. Free memory was 157.9 MB in the beginning and 135.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:39:59,920 INFO L168 Benchmark]: TraceAbstraction took 6790.60 ms. Allocated memory was 204.5 MB in the beginning and 471.3 MB in the end (delta: 266.9 MB). Free memory was 135.6 MB in the beginning and 395.4 MB in the end (delta: -259.8 MB). Peak memory consumption was 244.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:39:59,931 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 778.22 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 99.0 MB in the beginning and 161.7 MB in the end (delta: -62.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.44 ms. Allocated memory is still 204.5 MB. Free memory was 161.7 MB in the beginning and 158.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.23 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.9 MB in the end (delta: 949.6 kB). Peak memory consumption was 949.6 kB. Max. memory is 7.1 GB. * RCFGBuilder took 469.32 ms. Allocated memory is still 204.5 MB. Free memory was 157.9 MB in the beginning and 135.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6790.60 ms. Allocated memory was 204.5 MB in the beginning and 471.3 MB in the end (delta: 266.9 MB). Free memory was 135.6 MB in the beginning and 395.4 MB in the end (delta: -259.8 MB). Peak memory consumption was 244.0 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 859 SDtfs, 1442 SDslu, 3030 SDs, 0 SdLazy, 472 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8471occurred 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: 1.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 4367 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 364 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 61209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...