/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/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:42:45,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:42:45,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:42:45,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:42:45,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:42:45,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:42:45,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:42:45,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:42:45,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:42:45,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:42:45,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:42:45,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:42:45,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:42:45,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:42:45,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:42:45,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:42:45,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:42:45,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:42:45,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:42:45,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:42:45,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:42:45,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:42:45,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:42:45,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:42:45,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:42:45,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:42:45,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:42:45,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:42:45,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:42:45,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:42:45,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:42:45,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:42:45,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:42:45,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:42:45,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:42:45,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:42:45,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:42:45,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:42:45,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:42:45,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:42:45,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:42:45,683 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 19:42:45,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:42:45,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:42:45,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:42:45,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:42:45,712 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:42:45,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:42:45,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:42:45,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:42:45,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:42:45,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:42:45,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:42:45,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:42:45,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:42:45,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:42:45,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:42:45,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:42:45,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:42:45,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:42:45,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:42:45,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:42:45,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:42:45,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:42:45,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:42:45,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:42:45,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:42:45,718 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:42:45,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:42:45,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:42:45,718 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:42:45,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:42:45,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:42:46,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:42:46,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:42:46,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:42:46,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:42:46,028 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:42:46,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-04-18 19:42:46,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3746486/a1bc8efd53a24fc78aaca2413a938024/FLAG7b464d5db [2020-04-18 19:42:46,655 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:42:46,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-04-18 19:42:46,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3746486/a1bc8efd53a24fc78aaca2413a938024/FLAG7b464d5db [2020-04-18 19:42:46,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3746486/a1bc8efd53a24fc78aaca2413a938024 [2020-04-18 19:42:47,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:42:47,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:42:47,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:42:47,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:42:47,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:42:47,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:42:46" (1/1) ... [2020-04-18 19:42:47,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478f0b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47, skipping insertion in model container [2020-04-18 19:42:47,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:42:46" (1/1) ... [2020-04-18 19:42:47,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:42:47,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:42:47,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:42:47,581 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:42:47,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:42:47,752 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:42:47,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47 WrapperNode [2020-04-18 19:42:47,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:42:47,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:42:47,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:42:47,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:42:47,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:42:47,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:42:47,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:42:47,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:42:47,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (1/1) ... [2020-04-18 19:42:47,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:42:47,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:42:47,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:42:47,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:42:47,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (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 19:42:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:42:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:42:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:42:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:42:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:42:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:42:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:42:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:42:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:42:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:42:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:42:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:42:47,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:42:47,944 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 19:42:48,336 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:42:48,337 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:42:48,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:42:48 BoogieIcfgContainer [2020-04-18 19:42:48,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:42:48,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:42:48,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:42:48,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:42:48,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:42:46" (1/3) ... [2020-04-18 19:42:48,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7788c90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:42:48, skipping insertion in model container [2020-04-18 19:42:48,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:42:47" (2/3) ... [2020-04-18 19:42:48,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7788c90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:42:48, skipping insertion in model container [2020-04-18 19:42:48,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:42:48" (3/3) ... [2020-04-18 19:42:48,351 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-04-18 19:42:48,358 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:42:48,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:42:48,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:42:48,367 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:42:48,391 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,391 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,391 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,392 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,392 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,393 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,393 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,393 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,394 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,394 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,394 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,394 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,395 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,395 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,395 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,396 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,396 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,396 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,400 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,401 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,401 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,401 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,408 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,408 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,409 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,409 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,412 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,412 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,412 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,412 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:42:48,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:42:48,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:42:48,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:42:48,450 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:42:48,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:42:48,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:42:48,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:42:48,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:42:48,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:42:48,463 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:42:48,926 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:42:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:42:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:42:48,970 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:48,971 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 19:42:48,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:48,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 1 times [2020-04-18 19:42:48,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:48,987 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [998950750] [2020-04-18 19:42:49,005 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:49,022 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:42:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:42:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:42:49,026 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:49,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 2 times [2020-04-18 19:42:49,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:49,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743452524] [2020-04-18 19:42:49,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:49,485 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 19:42:49,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743452524] [2020-04-18 19:42:49,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:49,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:49,489 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:49,492 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:49,500 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:42:49,501 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:49,551 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:42:49,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:49,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:42:49,557 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:42:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:49,667 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:42:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:42:49,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:49,668 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [998950750] [2020-04-18 19:42:49,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:49,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:42:49,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [998950750] [2020-04-18 19:42:49,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:42:49,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:49,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:49,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:42:49,677 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:42:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:50,088 INFO L93 Difference]: Finished difference Result 19746 states and 68130 transitions. [2020-04-18 19:42:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:42:50,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:42:50,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:50,156 INFO L225 Difference]: With dead ends: 19746 [2020-04-18 19:42:50,157 INFO L226 Difference]: Without dead ends: 6391 [2020-04-18 19:42:50,158 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 19:42:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2020-04-18 19:42:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 5311. [2020-04-18 19:42:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5311 states. [2020-04-18 19:42:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 17983 transitions. [2020-04-18 19:42:50,534 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 17983 transitions. Word has length 36 [2020-04-18 19:42:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:50,535 INFO L479 AbstractCegarLoop]: Abstraction has 5311 states and 17983 transitions. [2020-04-18 19:42:50,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:42:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 17983 transitions. [2020-04-18 19:42:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:50,547 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:50,547 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 19:42:50,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash -431346913, now seen corresponding path program 1 times [2020-04-18 19:42:50,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:50,548 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [703742342] [2020-04-18 19:42:50,549 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:50,551 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 102 transitions. [2020-04-18 19:42:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-04-18 19:42:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:50,553 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:50,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:50,553 INFO L82 PathProgramCache]: Analyzing trace with hash -431346913, now seen corresponding path program 2 times [2020-04-18 19:42:50,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:50,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488445404] [2020-04-18 19:42:50,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:50,689 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 19:42:50,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488445404] [2020-04-18 19:42:50,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:50,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:50,690 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:50,694 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:50,701 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 78 transitions. [2020-04-18 19:42:50,701 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:50,738 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:42:50,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:50,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:42:50,738 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 6 states. [2020-04-18 19:42:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:50,799 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-04-18 19:42:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2020-04-18 19:42:50,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:50,800 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [703742342] [2020-04-18 19:42:50,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:50,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:42:50,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [703742342] [2020-04-18 19:42:50,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:42:50,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:50,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:50,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:42:50,803 INFO L87 Difference]: Start difference. First operand 5311 states and 17983 transitions. Second operand 6 states. [2020-04-18 19:42:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:50,956 INFO L93 Difference]: Finished difference Result 5871 states and 19716 transitions. [2020-04-18 19:42:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:42:50,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 19:42:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:50,992 INFO L225 Difference]: With dead ends: 5871 [2020-04-18 19:42:50,992 INFO L226 Difference]: Without dead ends: 4891 [2020-04-18 19:42:51,006 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 19:42:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2020-04-18 19:42:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 4531. [2020-04-18 19:42:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4531 states. [2020-04-18 19:42:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 15289 transitions. [2020-04-18 19:42:51,261 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 15289 transitions. Word has length 38 [2020-04-18 19:42:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:51,263 INFO L479 AbstractCegarLoop]: Abstraction has 4531 states and 15289 transitions. [2020-04-18 19:42:51,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:42:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 15289 transitions. [2020-04-18 19:42:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:51,273 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:51,273 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 19:42:51,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:51,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:51,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1576932841, now seen corresponding path program 1 times [2020-04-18 19:42:51,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:51,276 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [837835384] [2020-04-18 19:42:51,278 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:51,279 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 86 transitions. [2020-04-18 19:42:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-04-18 19:42:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:51,282 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:51,282 INFO L82 PathProgramCache]: Analyzing trace with hash -687974097, now seen corresponding path program 2 times [2020-04-18 19:42:51,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:51,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187690061] [2020-04-18 19:42:51,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:51,465 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 19:42:51,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187690061] [2020-04-18 19:42:51,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:51,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:51,466 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:51,469 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:51,475 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 72 transitions. [2020-04-18 19:42:51,475 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:51,537 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:42:51,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:42:51,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:42:51,538 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 7 states. [2020-04-18 19:42:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:51,672 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:42:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:42:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:42:51,673 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:51,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1576932841, now seen corresponding path program 3 times [2020-04-18 19:42:51,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:51,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804114749] [2020-04-18 19:42:51,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:51,832 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 19:42:51,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804114749] [2020-04-18 19:42:51,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:51,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:51,833 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:51,837 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:51,841 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 62 transitions. [2020-04-18 19:42:51,842 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:51,950 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:42:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:42:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:42:51,951 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 11 states. [2020-04-18 19:42:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:52,029 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:42:52,029 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:42:52,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:52,030 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [837835384] [2020-04-18 19:42:52,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:52,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:52,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [837835384] [2020-04-18 19:42:52,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:42:52,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:52,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:42:52,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:42:52,032 INFO L87 Difference]: Start difference. First operand 4531 states and 15289 transitions. Second operand 12 states. [2020-04-18 19:42:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:52,335 INFO L93 Difference]: Finished difference Result 6459 states and 21400 transitions. [2020-04-18 19:42:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:42:52,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-04-18 19:42:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:52,395 INFO L225 Difference]: With dead ends: 6459 [2020-04-18 19:42:52,395 INFO L226 Difference]: Without dead ends: 4951 [2020-04-18 19:42:52,396 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:42:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2020-04-18 19:42:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 4351. [2020-04-18 19:42:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4351 states. [2020-04-18 19:42:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4351 states to 4351 states and 14605 transitions. [2020-04-18 19:42:52,949 INFO L78 Accepts]: Start accepts. Automaton has 4351 states and 14605 transitions. Word has length 38 [2020-04-18 19:42:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:52,950 INFO L479 AbstractCegarLoop]: Abstraction has 4351 states and 14605 transitions. [2020-04-18 19:42:52,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:42:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4351 states and 14605 transitions. [2020-04-18 19:42:52,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:42:52,962 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:52,962 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 19:42:52,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:52,963 INFO L82 PathProgramCache]: Analyzing trace with hash 284208118, now seen corresponding path program 1 times [2020-04-18 19:42:52,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:52,963 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1745337877] [2020-04-18 19:42:52,965 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:52,968 INFO L259 McrAutomatonBuilder]: Finished intersection with 149 states and 304 transitions. [2020-04-18 19:42:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-04-18 19:42:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:42:52,972 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1173166862, now seen corresponding path program 2 times [2020-04-18 19:42:52,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:52,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799438780] [2020-04-18 19:42:52,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:53,119 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 19:42:53,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799438780] [2020-04-18 19:42:53,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:53,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:53,121 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:53,124 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:53,134 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 154 transitions. [2020-04-18 19:42:53,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:53,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:42:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:53,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:42:53,183 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 6 states. [2020-04-18 19:42:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:53,287 INFO L93 Difference]: Finished difference Result 167 states and 331 transitions. [2020-04-18 19:42:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 331 transitions. [2020-04-18 19:42:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:42:53,288 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:53,289 INFO L82 PathProgramCache]: Analyzing trace with hash 284208118, now seen corresponding path program 3 times [2020-04-18 19:42:53,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:53,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822283368] [2020-04-18 19:42:53,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:53,389 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 19:42:53,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822283368] [2020-04-18 19:42:53,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:53,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:53,391 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:53,394 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:53,405 INFO L259 McrAutomatonBuilder]: Finished intersection with 101 states and 184 transitions. [2020-04-18 19:42:53,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:53,675 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:42:53,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:42:53,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:42:53,677 INFO L87 Difference]: Start difference. First operand 167 states and 331 transitions. Second operand 16 states. [2020-04-18 19:42:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:54,238 INFO L93 Difference]: Finished difference Result 185 states and 358 transitions. [2020-04-18 19:42:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 358 transitions. [2020-04-18 19:42:54,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:54,240 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1745337877] [2020-04-18 19:42:54,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:54,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:54,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1745337877] [2020-04-18 19:42:54,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:42:54,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:42:54,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:42:54,243 INFO L87 Difference]: Start difference. First operand 4351 states and 14605 transitions. Second operand 17 states. [2020-04-18 19:42:54,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:54,471 INFO L93 Difference]: Finished difference Result 6333 states and 20940 transitions. [2020-04-18 19:42:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 19:42:54,472 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-04-18 19:42:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:54,485 INFO L225 Difference]: With dead ends: 6333 [2020-04-18 19:42:54,485 INFO L226 Difference]: Without dead ends: 3338 [2020-04-18 19:42:54,486 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=433, Invalid=1127, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 19:42:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-04-18 19:42:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 2858. [2020-04-18 19:42:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2858 states. [2020-04-18 19:42:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 9228 transitions. [2020-04-18 19:42:54,571 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 9228 transitions. Word has length 40 [2020-04-18 19:42:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:54,571 INFO L479 AbstractCegarLoop]: Abstraction has 2858 states and 9228 transitions. [2020-04-18 19:42:54,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:42:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 9228 transitions. [2020-04-18 19:42:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:42:54,578 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:54,578 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:54,579 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:54,579 INFO L82 PathProgramCache]: Analyzing trace with hash -56529516, now seen corresponding path program 1 times [2020-04-18 19:42:54,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:54,580 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1889128331] [2020-04-18 19:42:54,581 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:54,584 INFO L259 McrAutomatonBuilder]: Finished intersection with 192 states and 413 transitions. [2020-04-18 19:42:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-04-18 19:42:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:42:54,587 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:54,587 INFO L82 PathProgramCache]: Analyzing trace with hash 832429228, now seen corresponding path program 2 times [2020-04-18 19:42:54,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:54,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225579376] [2020-04-18 19:42:54,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:54,714 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 19:42:54,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225579376] [2020-04-18 19:42:54,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:54,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:54,718 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:54,724 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:54,742 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 225 transitions. [2020-04-18 19:42:54,743 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:54,846 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:42:54,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:54,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:42:54,847 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 8 states. [2020-04-18 19:42:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:54,988 INFO L93 Difference]: Finished difference Result 216 states and 451 transitions. [2020-04-18 19:42:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 451 transitions. [2020-04-18 19:42:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:42:54,989 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:54,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:54,990 INFO L82 PathProgramCache]: Analyzing trace with hash -56529516, now seen corresponding path program 3 times [2020-04-18 19:42:54,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:54,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965325281] [2020-04-18 19:42:54,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:55,079 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 19:42:55,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965325281] [2020-04-18 19:42:55,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:55,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:42:55,080 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:55,083 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:55,094 INFO L259 McrAutomatonBuilder]: Finished intersection with 105 states and 185 transitions. [2020-04-18 19:42:55,094 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:55,169 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:42:55,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:42:55,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:42:55,170 INFO L87 Difference]: Start difference. First operand 216 states and 451 transitions. Second operand 6 states. [2020-04-18 19:42:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:55,222 INFO L93 Difference]: Finished difference Result 216 states and 451 transitions. [2020-04-18 19:42:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 451 transitions. [2020-04-18 19:42:55,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:55,222 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1889128331] [2020-04-18 19:42:55,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:55,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:42:55,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1889128331] [2020-04-18 19:42:55,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:42:55,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:55,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:42:55,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:42:55,224 INFO L87 Difference]: Start difference. First operand 2858 states and 9228 transitions. Second operand 12 states. [2020-04-18 19:42:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:55,765 INFO L93 Difference]: Finished difference Result 4053 states and 12840 transitions. [2020-04-18 19:42:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:42:55,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-04-18 19:42:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:55,781 INFO L225 Difference]: With dead ends: 4053 [2020-04-18 19:42:55,781 INFO L226 Difference]: Without dead ends: 3037 [2020-04-18 19:42:55,782 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:42:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2020-04-18 19:42:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2605. [2020-04-18 19:42:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2020-04-18 19:42:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 8281 transitions. [2020-04-18 19:42:55,853 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 8281 transitions. Word has length 41 [2020-04-18 19:42:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:55,853 INFO L479 AbstractCegarLoop]: Abstraction has 2605 states and 8281 transitions. [2020-04-18 19:42:55,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:42:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 8281 transitions. [2020-04-18 19:42:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:42:55,858 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:55,858 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:55,858 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1759947093, now seen corresponding path program 1 times [2020-04-18 19:42:55,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:55,859 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1424965687] [2020-04-18 19:42:55,860 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:55,864 INFO L259 McrAutomatonBuilder]: Finished intersection with 235 states and 522 transitions. [2020-04-18 19:42:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states. [2020-04-18 19:42:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:42:55,867 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:55,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1646061459, now seen corresponding path program 2 times [2020-04-18 19:42:55,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:55,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729180449] [2020-04-18 19:42:55,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:55,965 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 19:42:55,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729180449] [2020-04-18 19:42:55,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:55,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:55,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:55,970 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:55,981 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 136 transitions. [2020-04-18 19:42:55,982 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:56,050 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:42:56,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:56,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:42:56,057 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 8 states. [2020-04-18 19:42:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:56,187 INFO L93 Difference]: Finished difference Result 265 states and 571 transitions. [2020-04-18 19:42:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 571 transitions. [2020-04-18 19:42:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:42:56,188 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:56,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1759947093, now seen corresponding path program 3 times [2020-04-18 19:42:56,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:56,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91723944] [2020-04-18 19:42:56,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:56,299 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 19:42:56,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91723944] [2020-04-18 19:42:56,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:56,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:56,300 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:56,305 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:56,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 85 states and 131 transitions. [2020-04-18 19:42:56,315 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:56,424 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:42:56,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:56,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:42:56,425 INFO L87 Difference]: Start difference. First operand 265 states and 571 transitions. Second operand 8 states. [2020-04-18 19:42:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:56,560 INFO L93 Difference]: Finished difference Result 265 states and 571 transitions. [2020-04-18 19:42:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 571 transitions. [2020-04-18 19:42:56,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:56,562 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1424965687] [2020-04-18 19:42:56,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:56,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:56,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1424965687] [2020-04-18 19:42:56,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:42:56,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:42:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:42:56,563 INFO L87 Difference]: Start difference. First operand 2605 states and 8281 transitions. Second operand 14 states. [2020-04-18 19:42:57,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:57,167 INFO L93 Difference]: Finished difference Result 2941 states and 9021 transitions. [2020-04-18 19:42:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 19:42:57,168 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-04-18 19:42:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:57,175 INFO L225 Difference]: With dead ends: 2941 [2020-04-18 19:42:57,175 INFO L226 Difference]: Without dead ends: 2089 [2020-04-18 19:42:57,176 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:42:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-04-18 19:42:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1873. [2020-04-18 19:42:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-04-18 19:42:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 5672 transitions. [2020-04-18 19:42:57,227 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 5672 transitions. Word has length 42 [2020-04-18 19:42:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:57,227 INFO L479 AbstractCegarLoop]: Abstraction has 1873 states and 5672 transitions. [2020-04-18 19:42:57,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:42:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 5672 transitions. [2020-04-18 19:42:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:42:57,232 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:57,232 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:57,233 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash -560928260, now seen corresponding path program 1 times [2020-04-18 19:42:57,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:57,234 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [677573941] [2020-04-18 19:42:57,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:57,243 INFO L259 McrAutomatonBuilder]: Finished intersection with 365 states and 876 transitions. [2020-04-18 19:42:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states. [2020-04-18 19:42:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:42:57,247 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1071017390, now seen corresponding path program 2 times [2020-04-18 19:42:57,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:57,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050450981] [2020-04-18 19:42:57,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:57,340 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 19:42:57,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050450981] [2020-04-18 19:42:57,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:57,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:57,341 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:57,345 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:57,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 158 transitions. [2020-04-18 19:42:57,357 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:57,422 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:42:57,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:57,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:42:57,423 INFO L87 Difference]: Start difference. First operand 365 states. Second operand 8 states. [2020-04-18 19:42:57,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:57,559 INFO L93 Difference]: Finished difference Result 455 states and 1083 transitions. [2020-04-18 19:42:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1083 transitions. [2020-04-18 19:42:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:42:57,561 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:57,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2004345514, now seen corresponding path program 3 times [2020-04-18 19:42:57,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:57,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147468664] [2020-04-18 19:42:57,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:57,656 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 19:42:57,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147468664] [2020-04-18 19:42:57,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:57,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:57,657 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:57,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:57,674 INFO L259 McrAutomatonBuilder]: Finished intersection with 105 states and 170 transitions. [2020-04-18 19:42:57,674 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:57,780 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:42:57,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:57,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:42:57,781 INFO L87 Difference]: Start difference. First operand 455 states and 1083 transitions. Second operand 8 states. [2020-04-18 19:42:58,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:58,030 INFO L93 Difference]: Finished difference Result 455 states and 1083 transitions. [2020-04-18 19:42:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1083 transitions. [2020-04-18 19:42:58,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:42:58,031 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [677573941] [2020-04-18 19:42:58,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:42:58,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:42:58,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [677573941] [2020-04-18 19:42:58,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:42:58,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:42:58,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:42:58,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:42:58,033 INFO L87 Difference]: Start difference. First operand 1873 states and 5672 transitions. Second operand 14 states. [2020-04-18 19:42:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:58,477 INFO L93 Difference]: Finished difference Result 1648 states and 4796 transitions. [2020-04-18 19:42:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 19:42:58,478 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-04-18 19:42:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:42:58,481 INFO L225 Difference]: With dead ends: 1648 [2020-04-18 19:42:58,481 INFO L226 Difference]: Without dead ends: 841 [2020-04-18 19:42:58,482 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=1223, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:42:58,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-04-18 19:42:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 827. [2020-04-18 19:42:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-04-18 19:42:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2281 transitions. [2020-04-18 19:42:58,502 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2281 transitions. Word has length 44 [2020-04-18 19:42:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:42:58,502 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 2281 transitions. [2020-04-18 19:42:58,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:42:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2281 transitions. [2020-04-18 19:42:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:42:58,504 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:42:58,505 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:42:58,505 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:42:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:58,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1980009150, now seen corresponding path program 1 times [2020-04-18 19:42:58,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:42:58,506 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1206491404] [2020-04-18 19:42:58,508 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:58,556 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:42:58,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:42:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:42:58,577 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:42:58,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:58,578 INFO L82 PathProgramCache]: Analyzing trace with hash -274657862, now seen corresponding path program 2 times [2020-04-18 19:42:58,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:58,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183186726] [2020-04-18 19:42:58,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:58,709 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 19:42:58,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183186726] [2020-04-18 19:42:58,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:58,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:58,710 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:58,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:58,747 INFO L259 McrAutomatonBuilder]: Finished intersection with 244 states and 526 transitions. [2020-04-18 19:42:58,748 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:58,815 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:42:58,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:42:58,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:42:58,816 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 8 states. [2020-04-18 19:42:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:42:59,067 INFO L93 Difference]: Finished difference Result 2721 states and 8590 transitions. [2020-04-18 19:42:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 8590 transitions. [2020-04-18 19:42:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:42:59,073 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:42:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:42:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1435952446, now seen corresponding path program 3 times [2020-04-18 19:42:59,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:42:59,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522905767] [2020-04-18 19:42:59,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:42:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:42:59,169 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 19:42:59,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522905767] [2020-04-18 19:42:59,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:42:59,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:42:59,170 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:42:59,174 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:42:59,221 INFO L259 McrAutomatonBuilder]: Finished intersection with 261 states and 564 transitions. [2020-04-18 19:42:59,221 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:42:59,426 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:42:59,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:42:59,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:42:59,427 INFO L87 Difference]: Start difference. First operand 2721 states and 8590 transitions. Second operand 13 states. [2020-04-18 19:43:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:00,092 INFO L93 Difference]: Finished difference Result 4265 states and 13122 transitions. [2020-04-18 19:43:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4265 states and 13122 transitions. [2020-04-18 19:43:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:00,100 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:43:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:00,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1391111264, now seen corresponding path program 4 times [2020-04-18 19:43:00,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:00,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349018891] [2020-04-18 19:43:00,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:00,195 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 19:43:00,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349018891] [2020-04-18 19:43:00,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:00,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:43:00,196 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:00,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:00,228 INFO L259 McrAutomatonBuilder]: Finished intersection with 249 states and 539 transitions. [2020-04-18 19:43:00,228 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:00,417 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:43:00,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:43:00,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:43:00,418 INFO L87 Difference]: Start difference. First operand 4265 states and 13122 transitions. Second operand 9 states. [2020-04-18 19:43:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:00,897 INFO L93 Difference]: Finished difference Result 4295 states and 13149 transitions. [2020-04-18 19:43:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 13149 transitions. [2020-04-18 19:43:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:00,904 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:43:00,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1919969300, now seen corresponding path program 5 times [2020-04-18 19:43:00,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:00,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973146666] [2020-04-18 19:43:00,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:01,005 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 19:43:01,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973146666] [2020-04-18 19:43:01,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:01,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:43:01,006 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:01,010 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:01,062 INFO L259 McrAutomatonBuilder]: Finished intersection with 345 states and 804 transitions. [2020-04-18 19:43:01,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:01,187 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 33 times. [2020-04-18 19:43:01,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:43:01,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=2183, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 19:43:01,188 INFO L87 Difference]: Start difference. First operand 4295 states and 13149 transitions. Second operand 11 states. [2020-04-18 19:43:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:01,671 INFO L93 Difference]: Finished difference Result 5211 states and 15595 transitions. [2020-04-18 19:43:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 15595 transitions. [2020-04-18 19:43:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:43:01,678 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:43:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:43:01,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1809221374, now seen corresponding path program 6 times [2020-04-18 19:43:01,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:43:01,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34604869] [2020-04-18 19:43:01,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:43:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:43:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:43:01,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34604869] [2020-04-18 19:43:01,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:43:01,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:43:01,772 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:43:01,776 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:43:01,891 INFO L259 McrAutomatonBuilder]: Finished intersection with 519 states and 1378 transitions. [2020-04-18 19:43:01,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:43:02,435 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 69 times. [2020-04-18 19:43:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:43:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=907, Invalid=3785, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 19:43:02,438 INFO L87 Difference]: Start difference. First operand 5211 states and 15595 transitions. Second operand 20 states. [2020-04-18 19:43:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:03,955 INFO L93 Difference]: Finished difference Result 8019 states and 23231 transitions. [2020-04-18 19:43:03,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8019 states and 23231 transitions. [2020-04-18 19:43:03,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:43:03,971 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1206491404] [2020-04-18 19:43:03,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:43:03,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:43:03,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1206491404] [2020-04-18 19:43:03,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-04-18 19:43:03,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:43:03,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-04-18 19:43:03,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1553, Invalid=5929, Unknown=0, NotChecked=0, Total=7482 [2020-04-18 19:43:03,975 INFO L87 Difference]: Start difference. First operand 827 states and 2281 transitions. Second operand 37 states. [2020-04-18 19:43:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:43:04,721 INFO L93 Difference]: Finished difference Result 787 states and 2152 transitions. [2020-04-18 19:43:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:43:04,722 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 48 [2020-04-18 19:43:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:43:04,722 INFO L225 Difference]: With dead ends: 787 [2020-04-18 19:43:04,722 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:43:04,726 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2190, Invalid=8316, Unknown=0, NotChecked=0, Total=10506 [2020-04-18 19:43:04,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:43:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:43:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:43:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:43:04,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:43:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:43:04,727 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:43:04,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-04-18 19:43:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:43:04,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:43:04,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:43:04 BasicIcfg [2020-04-18 19:43:04,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:43:04,740 INFO L168 Benchmark]: Toolchain (without parser) took 17736.59 ms. Allocated memory was 145.2 MB in the beginning and 654.8 MB in the end (delta: 509.6 MB). Free memory was 100.9 MB in the beginning and 225.8 MB in the end (delta: -124.8 MB). Peak memory consumption was 384.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:04,746 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:43:04,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.72 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 98.9 MB in the beginning and 158.2 MB in the end (delta: -59.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:04,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.70 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:04,750 INFO L168 Benchmark]: Boogie Preprocessor took 44.56 ms. Allocated memory is still 201.3 MB. Free memory was 156.2 MB in the beginning and 154.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:04,750 INFO L168 Benchmark]: RCFGBuilder took 463.54 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 132.9 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:04,751 INFO L168 Benchmark]: TraceAbstraction took 16391.72 ms. Allocated memory was 201.3 MB in the beginning and 654.8 MB in the end (delta: 453.5 MB). Free memory was 132.2 MB in the beginning and 225.8 MB in the end (delta: -93.6 MB). Peak memory consumption was 359.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:43:04,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.72 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 98.9 MB in the beginning and 158.2 MB in the end (delta: -59.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 78.70 ms. Allocated memory is still 201.3 MB. Free memory was 158.2 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.56 ms. Allocated memory is still 201.3 MB. Free memory was 156.2 MB in the beginning and 154.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.54 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 132.9 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16391.72 ms. Allocated memory was 201.3 MB in the beginning and 654.8 MB in the end (delta: 453.5 MB). Free memory was 132.2 MB in the beginning and 225.8 MB in the end (delta: -93.6 MB). Peak memory consumption was 359.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 794 SDtfs, 3179 SDslu, 4684 SDs, 0 SdLazy, 963 SolverSat, 361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1223 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 3182 StatesRemovedByMinimization, 7 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...