/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/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:36:42,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:36:42,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:36:42,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:36:42,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:36:42,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:36:42,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:36:42,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:36:42,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:36:42,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:36:42,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:36:42,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:36:42,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:36:42,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:36:42,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:36:42,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:36:42,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:36:42,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:36:42,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:36:42,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:36:42,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:36:42,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:36:42,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:36:42,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:36:42,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:36:42,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:36:42,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:36:42,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:36:42,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:36:42,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:36:42,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:36:42,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:36:42,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:36:42,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:36:42,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:36:42,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:36:42,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:36:42,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:36:42,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:36:42,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:36:42,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:36:42,792 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 19:36:42,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:36:42,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:36:42,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:36:42,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:36:42,833 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:36:42,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:36:42,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:36:42,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:36:42,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:36:42,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:36:42,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:36:42,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:36:42,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:36:42,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:36:42,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:36:42,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:36:42,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:36:42,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:36:42,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:36:42,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:36:42,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:36:42,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:36:42,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:36:42,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:36:42,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:36:42,839 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:36:42,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:36:42,839 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:36:42,840 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:36:42,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:36:42,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:36:43,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:36:43,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:36:43,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:36:43,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:36:43,127 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:36:43,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-18 19:36:43,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947bf2acd/67ced5f8bb4644d394d22a74a8c2769d/FLAGea3e97dbb [2020-04-18 19:36:43,740 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:36:43,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-18 19:36:43,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947bf2acd/67ced5f8bb4644d394d22a74a8c2769d/FLAGea3e97dbb [2020-04-18 19:36:44,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947bf2acd/67ced5f8bb4644d394d22a74a8c2769d [2020-04-18 19:36:44,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:36:44,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:36:44,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:36:44,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:36:44,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:36:44,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4a3a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44, skipping insertion in model container [2020-04-18 19:36:44,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:36:44,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:36:44,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:36:44,642 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:36:44,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:36:44,776 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:36:44,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44 WrapperNode [2020-04-18 19:36:44,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:36:44,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:36:44,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:36:44,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:36:44,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:36:44,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:36:44,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:36:44,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:36:44,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (1/1) ... [2020-04-18 19:36:44,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:36:44,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:36:44,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:36:44,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:36:44,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (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 19:36:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:36:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:36:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:36:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:36:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:36:44,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:36:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:36:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:36:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:36:44,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:36:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:36:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:36:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:36:44,929 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 19:36:45,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:36:45,308 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:36:45,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:36:45 BoogieIcfgContainer [2020-04-18 19:36:45,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:36:45,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:36:45,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:36:45,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:36:45,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:36:44" (1/3) ... [2020-04-18 19:36:45,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511995d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:36:45, skipping insertion in model container [2020-04-18 19:36:45,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:36:44" (2/3) ... [2020-04-18 19:36:45,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511995d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:36:45, skipping insertion in model container [2020-04-18 19:36:45,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:36:45" (3/3) ... [2020-04-18 19:36:45,323 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-04-18 19:36:45,334 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:36:45,334 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:36:45,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:36:45,343 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:36:45,373 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,374 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,374 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,374 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,375 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,375 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,376 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,377 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,377 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,377 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,377 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,378 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,379 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,379 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,379 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,380 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,381 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,381 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,385 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,385 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,386 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,386 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,401 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,401 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,402 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,402 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,405 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,406 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,406 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,407 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:36:45,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:36:45,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:36:45,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:36:45,450 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:36:45,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:36:45,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:36:45,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:36:45,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:36:45,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:36:45,464 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 19:36:45,854 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7266 states. [2020-04-18 19:36:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states. [2020-04-18 19:36:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 19:36:45,893 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:45,895 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] [2020-04-18 19:36:45,895 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1611632849, now seen corresponding path program 1 times [2020-04-18 19:36:45,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:45,910 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1947215711] [2020-04-18 19:36:45,927 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:45,946 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 19:36:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-04-18 19:36:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-04-18 19:36:45,949 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:45,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1611632849, now seen corresponding path program 2 times [2020-04-18 19:36:45,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:45,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354718724] [2020-04-18 19:36:45,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:46,433 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 19:36:46,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354718724] [2020-04-18 19:36:46,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:46,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:46,436 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:46,439 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:46,446 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2020-04-18 19:36:46,446 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:46,502 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:36:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:36:46,507 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-04-18 19:36:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:46,588 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2020-04-18 19:36:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-04-18 19:36:46,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:46,590 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1947215711] [2020-04-18 19:36:46,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:46,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:36:46,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1947215711] [2020-04-18 19:36:46,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:36:46,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:46,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:46,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:36:46,598 INFO L87 Difference]: Start difference. First operand 7266 states. Second operand 7 states. [2020-04-18 19:36:47,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:47,147 INFO L93 Difference]: Finished difference Result 16774 states and 57234 transitions. [2020-04-18 19:36:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:36:47,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-04-18 19:36:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:47,217 INFO L225 Difference]: With dead ends: 16774 [2020-04-18 19:36:47,217 INFO L226 Difference]: Without dead ends: 5212 [2020-04-18 19:36:47,221 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 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 19:36:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2020-04-18 19:36:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4252. [2020-04-18 19:36:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4252 states. [2020-04-18 19:36:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 14005 transitions. [2020-04-18 19:36:47,632 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 14005 transitions. Word has length 34 [2020-04-18 19:36:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:47,634 INFO L479 AbstractCegarLoop]: Abstraction has 4252 states and 14005 transitions. [2020-04-18 19:36:47,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:36:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 14005 transitions. [2020-04-18 19:36:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:36:47,648 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:47,653 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 19:36:47,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:47,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:47,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1624822546, now seen corresponding path program 1 times [2020-04-18 19:36:47,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:47,655 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2012688834] [2020-04-18 19:36:47,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:47,659 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 100 transitions. [2020-04-18 19:36:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-04-18 19:36:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:36:47,666 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1624822546, now seen corresponding path program 2 times [2020-04-18 19:36:47,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:47,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105959778] [2020-04-18 19:36:47,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:47,878 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 19:36:47,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105959778] [2020-04-18 19:36:47,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:47,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:47,880 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:47,886 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:47,895 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 76 transitions. [2020-04-18 19:36:47,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:47,945 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:36:47,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:47,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:36:47,946 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 6 states. [2020-04-18 19:36:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:48,019 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2020-04-18 19:36:48,019 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions. [2020-04-18 19:36:48,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:48,020 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2012688834] [2020-04-18 19:36:48,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:48,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:36:48,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2012688834] [2020-04-18 19:36:48,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:36:48,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:48,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:36:48,024 INFO L87 Difference]: Start difference. First operand 4252 states and 14005 transitions. Second operand 6 states. [2020-04-18 19:36:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:48,177 INFO L93 Difference]: Finished difference Result 4892 states and 16009 transitions. [2020-04-18 19:36:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:36:48,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:36:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:48,210 INFO L225 Difference]: With dead ends: 4892 [2020-04-18 19:36:48,210 INFO L226 Difference]: Without dead ends: 4108 [2020-04-18 19:36:48,221 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 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 19:36:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2020-04-18 19:36:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 4108. [2020-04-18 19:36:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4108 states. [2020-04-18 19:36:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 13465 transitions. [2020-04-18 19:36:48,390 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 13465 transitions. Word has length 36 [2020-04-18 19:36:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:48,391 INFO L479 AbstractCegarLoop]: Abstraction has 4108 states and 13465 transitions. [2020-04-18 19:36:48,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:36:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 13465 transitions. [2020-04-18 19:36:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:36:48,402 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:48,402 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 19:36:48,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:48,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1790094945, now seen corresponding path program 1 times [2020-04-18 19:36:48,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:48,404 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1272217028] [2020-04-18 19:36:48,406 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:48,483 INFO L259 McrAutomatonBuilder]: Finished intersection with 179 states and 382 transitions. [2020-04-18 19:36:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-04-18 19:36:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:36:48,485 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:48,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1790094945, now seen corresponding path program 2 times [2020-04-18 19:36:48,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:48,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868147560] [2020-04-18 19:36:48,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:48,596 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 19:36:48,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868147560] [2020-04-18 19:36:48,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:48,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:48,597 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:48,601 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:48,616 INFO L259 McrAutomatonBuilder]: Finished intersection with 131 states and 262 transitions. [2020-04-18 19:36:48,616 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:48,648 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:36:48,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:48,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:36:48,649 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 6 states. [2020-04-18 19:36:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:48,704 INFO L93 Difference]: Finished difference Result 179 states and 382 transitions. [2020-04-18 19:36:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 382 transitions. [2020-04-18 19:36:48,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:48,706 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1272217028] [2020-04-18 19:36:48,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:48,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:36:48,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1272217028] [2020-04-18 19:36:48,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:36:48,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:48,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:48,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:36:48,707 INFO L87 Difference]: Start difference. First operand 4108 states and 13465 transitions. Second operand 6 states. [2020-04-18 19:36:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:48,802 INFO L93 Difference]: Finished difference Result 4428 states and 14421 transitions. [2020-04-18 19:36:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:36:48,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 19:36:48,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:48,831 INFO L225 Difference]: With dead ends: 4428 [2020-04-18 19:36:48,832 INFO L226 Difference]: Without dead ends: 3868 [2020-04-18 19:36:48,832 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 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 19:36:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2020-04-18 19:36:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3580. [2020-04-18 19:36:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3580 states. [2020-04-18 19:36:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 11701 transitions. [2020-04-18 19:36:48,953 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 11701 transitions. Word has length 38 [2020-04-18 19:36:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:48,954 INFO L479 AbstractCegarLoop]: Abstraction has 3580 states and 11701 transitions. [2020-04-18 19:36:48,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:36:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 11701 transitions. [2020-04-18 19:36:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:36:48,963 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:48,963 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 19:36:48,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1347302749, now seen corresponding path program 1 times [2020-04-18 19:36:48,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:48,964 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [67547520] [2020-04-18 19:36:48,966 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:48,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 202 states and 435 transitions. [2020-04-18 19:36:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-04-18 19:36:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:36:48,974 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:48,974 INFO L82 PathProgramCache]: Analyzing trace with hash 933811215, now seen corresponding path program 2 times [2020-04-18 19:36:48,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:48,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785441230] [2020-04-18 19:36:48,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:49,115 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 19:36:49,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785441230] [2020-04-18 19:36:49,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:49,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:49,117 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:49,122 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:49,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 113 states and 209 transitions. [2020-04-18 19:36:49,136 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:49,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:36:49,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:49,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:36:49,195 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 7 states. [2020-04-18 19:36:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:49,440 INFO L93 Difference]: Finished difference Result 219 states and 451 transitions. [2020-04-18 19:36:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 451 transitions. [2020-04-18 19:36:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:36:49,442 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:36:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1347302749, now seen corresponding path program 3 times [2020-04-18 19:36:49,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:49,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590533934] [2020-04-18 19:36:49,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:49,679 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 19:36:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590533934] [2020-04-18 19:36:49,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:49,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:49,681 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:49,684 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:49,698 INFO L259 McrAutomatonBuilder]: Finished intersection with 115 states and 207 transitions. [2020-04-18 19:36:49,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:50,102 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 25 times. [2020-04-18 19:36:50,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:36:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:36:50,103 INFO L87 Difference]: Start difference. First operand 219 states and 451 transitions. Second operand 17 states. [2020-04-18 19:36:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:50,614 INFO L93 Difference]: Finished difference Result 271 states and 549 transitions. [2020-04-18 19:36:50,614 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 549 transitions. [2020-04-18 19:36:50,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:50,616 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [67547520] [2020-04-18 19:36:50,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:50,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:36:50,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [67547520] [2020-04-18 19:36:50,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:36:50,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:50,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:36:50,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:36:50,619 INFO L87 Difference]: Start difference. First operand 3580 states and 11701 transitions. Second operand 19 states. [2020-04-18 19:36:51,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:51,476 INFO L93 Difference]: Finished difference Result 7616 states and 24100 transitions. [2020-04-18 19:36:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:36:51,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2020-04-18 19:36:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:51,515 INFO L225 Difference]: With dead ends: 7616 [2020-04-18 19:36:51,515 INFO L226 Difference]: Without dead ends: 3618 [2020-04-18 19:36:51,516 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:36:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2020-04-18 19:36:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2658. [2020-04-18 19:36:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-04-18 19:36:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 8373 transitions. [2020-04-18 19:36:51,618 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 8373 transitions. Word has length 39 [2020-04-18 19:36:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:51,620 INFO L479 AbstractCegarLoop]: Abstraction has 2658 states and 8373 transitions. [2020-04-18 19:36:51,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:36:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 8373 transitions. [2020-04-18 19:36:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:36:51,629 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:51,629 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 19:36:51,629 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:51,629 INFO L82 PathProgramCache]: Analyzing trace with hash 815158944, now seen corresponding path program 1 times [2020-04-18 19:36:51,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:51,630 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [418580030] [2020-04-18 19:36:51,631 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:51,643 INFO L259 McrAutomatonBuilder]: Finished intersection with 413 states and 1144 transitions. [2020-04-18 19:36:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-04-18 19:36:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:36:51,647 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:51,648 INFO L82 PathProgramCache]: Analyzing trace with hash 815158944, now seen corresponding path program 2 times [2020-04-18 19:36:51,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:51,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006810812] [2020-04-18 19:36:51,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:51,763 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 19:36:51,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006810812] [2020-04-18 19:36:51,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:51,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:51,765 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:51,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:51,799 INFO L259 McrAutomatonBuilder]: Finished intersection with 215 states and 516 transitions. [2020-04-18 19:36:51,799 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:51,844 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:36:51,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:51,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:36:51,846 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 6 states. [2020-04-18 19:36:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:51,893 INFO L93 Difference]: Finished difference Result 413 states and 1144 transitions. [2020-04-18 19:36:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1144 transitions. [2020-04-18 19:36:51,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:51,896 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [418580030] [2020-04-18 19:36:51,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:51,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:36:51,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [418580030] [2020-04-18 19:36:51,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:36:51,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:51,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:51,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:36:51,900 INFO L87 Difference]: Start difference. First operand 2658 states and 8373 transitions. Second operand 6 states. [2020-04-18 19:36:51,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:51,985 INFO L93 Difference]: Finished difference Result 3510 states and 10889 transitions. [2020-04-18 19:36:51,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:36:51,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-04-18 19:36:51,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:51,994 INFO L225 Difference]: With dead ends: 3510 [2020-04-18 19:36:51,994 INFO L226 Difference]: Without dead ends: 2454 [2020-04-18 19:36:51,995 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:36:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2020-04-18 19:36:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2454. [2020-04-18 19:36:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-04-18 19:36:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 7617 transitions. [2020-04-18 19:36:52,070 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 7617 transitions. Word has length 40 [2020-04-18 19:36:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:52,070 INFO L479 AbstractCegarLoop]: Abstraction has 2454 states and 7617 transitions. [2020-04-18 19:36:52,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:36:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 7617 transitions. [2020-04-18 19:36:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:36:52,076 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:52,076 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 19:36:52,077 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:52,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1028320348, now seen corresponding path program 1 times [2020-04-18 19:36:52,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:52,077 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [784804014] [2020-04-18 19:36:52,079 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:52,094 INFO L259 McrAutomatonBuilder]: Finished intersection with 542 states and 1557 transitions. [2020-04-18 19:36:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2020-04-18 19:36:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:36:52,100 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:52,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1028320348, now seen corresponding path program 2 times [2020-04-18 19:36:52,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:52,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157740241] [2020-04-18 19:36:52,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:52,190 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 19:36:52,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157740241] [2020-04-18 19:36:52,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:52,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:52,192 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:52,195 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:52,224 INFO L259 McrAutomatonBuilder]: Finished intersection with 185 states and 409 transitions. [2020-04-18 19:36:52,224 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:52,271 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 19:36:52,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:52,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:36:52,271 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 7 states. [2020-04-18 19:36:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:52,420 INFO L93 Difference]: Finished difference Result 542 states and 1557 transitions. [2020-04-18 19:36:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1557 transitions. [2020-04-18 19:36:52,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:52,422 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [784804014] [2020-04-18 19:36:52,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:52,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:36:52,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [784804014] [2020-04-18 19:36:52,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:36:52,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:52,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:52,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:36:52,424 INFO L87 Difference]: Start difference. First operand 2454 states and 7617 transitions. Second operand 7 states. [2020-04-18 19:36:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:52,538 INFO L93 Difference]: Finished difference Result 2712 states and 8185 transitions. [2020-04-18 19:36:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:36:52,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 19:36:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:52,548 INFO L225 Difference]: With dead ends: 2712 [2020-04-18 19:36:52,548 INFO L226 Difference]: Without dead ends: 1760 [2020-04-18 19:36:52,548 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:36:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2020-04-18 19:36:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2020-04-18 19:36:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-04-18 19:36:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 5217 transitions. [2020-04-18 19:36:52,600 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 5217 transitions. Word has length 41 [2020-04-18 19:36:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:52,601 INFO L479 AbstractCegarLoop]: Abstraction has 1760 states and 5217 transitions. [2020-04-18 19:36:52,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:36:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 5217 transitions. [2020-04-18 19:36:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:36:52,607 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:52,608 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 19:36:52,608 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1248010763, now seen corresponding path program 1 times [2020-04-18 19:36:52,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:52,609 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1642543338] [2020-04-18 19:36:52,611 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:52,636 INFO L259 McrAutomatonBuilder]: Finished intersection with 894 states and 2703 transitions. [2020-04-18 19:36:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states. [2020-04-18 19:36:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:36:52,645 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:52,646 INFO L82 PathProgramCache]: Analyzing trace with hash -373371803, now seen corresponding path program 2 times [2020-04-18 19:36:52,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:52,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448113946] [2020-04-18 19:36:52,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:52,768 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 19:36:52,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448113946] [2020-04-18 19:36:52,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:52,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:52,769 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:52,771 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:52,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 267 states and 583 transitions. [2020-04-18 19:36:52,808 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:52,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 19:36:52,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:52,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:36:52,888 INFO L87 Difference]: Start difference. First operand 894 states. Second operand 7 states. [2020-04-18 19:36:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:53,108 INFO L93 Difference]: Finished difference Result 894 states and 2703 transitions. [2020-04-18 19:36:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 2703 transitions. [2020-04-18 19:36:53,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:53,111 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1642543338] [2020-04-18 19:36:53,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:53,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:36:53,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1642543338] [2020-04-18 19:36:53,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:36:53,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:53,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:53,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:36:53,112 INFO L87 Difference]: Start difference. First operand 1760 states and 5217 transitions. Second operand 7 states. [2020-04-18 19:36:53,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:53,188 INFO L93 Difference]: Finished difference Result 1634 states and 4680 transitions. [2020-04-18 19:36:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:36:53,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-04-18 19:36:53,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:53,196 INFO L225 Difference]: With dead ends: 1634 [2020-04-18 19:36:53,196 INFO L226 Difference]: Without dead ends: 677 [2020-04-18 19:36:53,196 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:36:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-04-18 19:36:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2020-04-18 19:36:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-04-18 19:36:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1882 transitions. [2020-04-18 19:36:53,213 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1882 transitions. Word has length 43 [2020-04-18 19:36:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:53,214 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 1882 transitions. [2020-04-18 19:36:53,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:36:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1882 transitions. [2020-04-18 19:36:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:36:53,216 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:53,216 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 19:36:53,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash -607565374, now seen corresponding path program 1 times [2020-04-18 19:36:53,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:53,217 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1306967577] [2020-04-18 19:36:53,218 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:53,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 1414 states and 4509 transitions. [2020-04-18 19:36:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states. [2020-04-18 19:36:53,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:36:53,272 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:53,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1874344690, now seen corresponding path program 2 times [2020-04-18 19:36:53,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:53,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904425536] [2020-04-18 19:36:53,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:53,415 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 19:36:53,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904425536] [2020-04-18 19:36:53,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:53,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:53,416 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:53,420 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:53,522 INFO L259 McrAutomatonBuilder]: Finished intersection with 349 states and 767 transitions. [2020-04-18 19:36:53,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:53,559 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:36:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:36:53,560 INFO L87 Difference]: Start difference. First operand 1414 states. Second operand 6 states. [2020-04-18 19:36:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:53,729 INFO L93 Difference]: Finished difference Result 2662 states and 8267 transitions. [2020-04-18 19:36:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 8267 transitions. [2020-04-18 19:36:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:36:53,736 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:36:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:53,736 INFO L82 PathProgramCache]: Analyzing trace with hash 638636806, now seen corresponding path program 3 times [2020-04-18 19:36:53,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:53,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638486492] [2020-04-18 19:36:53,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:53,866 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 19:36:53,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638486492] [2020-04-18 19:36:53,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:53,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:53,867 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:53,871 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:53,934 INFO L259 McrAutomatonBuilder]: Finished intersection with 318 states and 703 transitions. [2020-04-18 19:36:53,934 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:54,040 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 19:36:54,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:54,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:36:54,042 INFO L87 Difference]: Start difference. First operand 2662 states and 8267 transitions. Second operand 7 states. [2020-04-18 19:36:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:54,426 INFO L93 Difference]: Finished difference Result 2694 states and 8297 transitions. [2020-04-18 19:36:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 8297 transitions. [2020-04-18 19:36:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:36:54,435 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:36:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash -173257756, now seen corresponding path program 4 times [2020-04-18 19:36:54,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:54,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848708733] [2020-04-18 19:36:54,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:54,534 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 19:36:54,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848708733] [2020-04-18 19:36:54,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:54,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:54,535 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:54,539 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:54,613 INFO L259 McrAutomatonBuilder]: Finished intersection with 465 states and 1180 transitions. [2020-04-18 19:36:54,613 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:54,650 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 19:36:54,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:36:54,651 INFO L87 Difference]: Start difference. First operand 2694 states and 8297 transitions. Second operand 6 states. [2020-04-18 19:36:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:54,761 INFO L93 Difference]: Finished difference Result 3914 states and 11539 transitions. [2020-04-18 19:36:54,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 11539 transitions. [2020-04-18 19:36:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:36:54,770 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:36:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:54,770 INFO L82 PathProgramCache]: Analyzing trace with hash -478514040, now seen corresponding path program 5 times [2020-04-18 19:36:54,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:54,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284382878] [2020-04-18 19:36:54,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:54,852 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 19:36:54,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284382878] [2020-04-18 19:36:54,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:54,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:54,854 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:54,859 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:54,989 INFO L259 McrAutomatonBuilder]: Finished intersection with 441 states and 1113 transitions. [2020-04-18 19:36:54,990 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:55,038 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:36:55,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:55,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:36:55,042 INFO L87 Difference]: Start difference. First operand 3914 states and 11539 transitions. Second operand 7 states. [2020-04-18 19:36:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:55,265 INFO L93 Difference]: Finished difference Result 5704 states and 16383 transitions. [2020-04-18 19:36:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 16383 transitions. [2020-04-18 19:36:55,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:55,276 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1306967577] [2020-04-18 19:36:55,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:55,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:36:55,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1306967577] [2020-04-18 19:36:55,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:36:55,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:55,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:36:55,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:36:55,278 INFO L87 Difference]: Start difference. First operand 677 states and 1882 transitions. Second operand 14 states. [2020-04-18 19:36:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:55,555 INFO L93 Difference]: Finished difference Result 785 states and 2179 transitions. [2020-04-18 19:36:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:36:55,555 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-04-18 19:36:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:55,556 INFO L225 Difference]: With dead ends: 785 [2020-04-18 19:36:55,556 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:36:55,556 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=317, Invalid=1845, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 19:36:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:36:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:36:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:36:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:36:55,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 19:36:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:55,558 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:36:55,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:36:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:36:55,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:55,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:36:55 BasicIcfg [2020-04-18 19:36:55,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:36:55,564 INFO L168 Benchmark]: Toolchain (without parser) took 11480.83 ms. Allocated memory was 139.5 MB in the beginning and 544.7 MB in the end (delta: 405.3 MB). Free memory was 102.9 MB in the beginning and 320.7 MB in the end (delta: -217.8 MB). Peak memory consumption was 187.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:55,565 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:36:55,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.68 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 160.2 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:55,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:55,567 INFO L168 Benchmark]: Boogie Preprocessor took 28.13 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:55,568 INFO L168 Benchmark]: RCFGBuilder took 455.92 ms. Allocated memory is still 203.4 MB. Free memory was 156.3 MB in the beginning and 135.2 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:55,568 INFO L168 Benchmark]: TraceAbstraction took 10246.16 ms. Allocated memory was 203.4 MB in the beginning and 544.7 MB in the end (delta: 341.3 MB). Free memory was 134.5 MB in the beginning and 320.7 MB in the end (delta: -186.2 MB). Peak memory consumption was 155.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:55,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.68 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 160.2 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 203.4 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.13 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.92 ms. Allocated memory is still 203.4 MB. Free memory was 156.3 MB in the beginning and 135.2 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10246.16 ms. Allocated memory was 203.4 MB in the beginning and 544.7 MB in the end (delta: 341.3 MB). Free memory was 134.5 MB in the beginning and 320.7 MB in the end (delta: -186.2 MB). Peak memory consumption was 155.1 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, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 759 SDtfs, 1317 SDslu, 3555 SDs, 0 SdLazy, 652 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7266occurred 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: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 2208 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...