/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/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:35:34,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:35:34,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:35:34,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:35:34,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:35:34,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:35:34,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:35:34,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:35:34,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:35:34,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:35:34,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:35:34,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:35:34,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:35:34,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:35:34,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:35:34,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:35:34,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:35:34,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:35:34,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:35:34,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:35:34,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:35:34,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:35:34,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:35:34,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:35:34,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:35:34,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:35:34,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:35:34,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:35:34,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:35:34,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:35:34,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:35:34,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:35:34,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:35:34,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:35:34,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:35:34,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:35:34,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:35:34,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:35:34,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:35:34,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:35:34,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:35:34,933 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 19:35:34,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:35:34,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:35:34,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:35:34,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:35:34,949 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:35:34,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:35:34,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:35:34,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:35:34,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:35:34,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:35:34,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:35:34,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:35:34,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:35:34,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:35:34,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:35:34,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:35:34,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:35:34,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:35:34,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:35:34,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:35:34,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:35:34,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:35:34,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:35:34,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:35:34,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:35:34,953 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:35:34,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:35:34,953 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:35:34,953 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:35:34,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:35:34,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:35:35,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:35:35,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:35:35,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:35:35,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:35:35,274 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:35:35,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-18 19:35:35,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108c729d7/eada1dcf588a41d3b95cdad21466bffb/FLAG5d70ce05a [2020-04-18 19:35:35,853 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:35:35,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-04-18 19:35:35,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108c729d7/eada1dcf588a41d3b95cdad21466bffb/FLAG5d70ce05a [2020-04-18 19:35:36,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108c729d7/eada1dcf588a41d3b95cdad21466bffb [2020-04-18 19:35:36,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:35:36,169 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:35:36,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:35:36,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:35:36,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:35:36,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:36,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602d4570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36, skipping insertion in model container [2020-04-18 19:35:36,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:36,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:35:36,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:35:36,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:35:36,736 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:35:36,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:35:36,921 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:35:36,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36 WrapperNode [2020-04-18 19:35:36,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:35:36,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:35:36,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:35:36,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:35:36,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:36,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:36,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:35:36,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:35:36,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:35:36,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:35:37,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:37,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:37,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:37,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:37,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:37,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:37,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (1/1) ... [2020-04-18 19:35:37,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:35:37,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:35:37,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:35:37,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:35:37,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (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 19:35:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:35:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:35:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:35:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:35:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:35:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:35:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:35:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:35:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:35:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:35:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 19:35:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 19:35:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:35:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:35:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:35:37,110 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 19:35:37,524 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:35:37,525 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:35:37,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:35:37 BoogieIcfgContainer [2020-04-18 19:35:37,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:35:37,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:35:37,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:35:37,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:35:37,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:35:36" (1/3) ... [2020-04-18 19:35:37,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5b7d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:35:37, skipping insertion in model container [2020-04-18 19:35:37,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:35:36" (2/3) ... [2020-04-18 19:35:37,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5b7d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:35:37, skipping insertion in model container [2020-04-18 19:35:37,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:35:37" (3/3) ... [2020-04-18 19:35:37,539 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-04-18 19:35:37,550 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:35:37,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:35:37,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:35:37,558 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:35:37,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,585 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,586 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,586 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,587 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,587 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,587 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,588 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,588 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,588 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,589 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,589 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,589 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,589 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,590 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,590 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,590 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,591 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,591 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,591 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,592 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,592 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,592 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,596 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,597 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,597 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,597 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,604 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,604 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,604 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,605 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,608 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,608 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,608 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,608 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,611 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,611 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:35:37,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 19:35:37,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:35:37,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:35:37,643 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:35:37,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:35:37,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:35:37,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:35:37,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:35:37,644 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:35:37,662 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 80 transitions, 180 flow [2020-04-18 19:35:42,875 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 47251 states. [2020-04-18 19:35:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 47251 states. [2020-04-18 19:35:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:35:42,946 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:42,947 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:35:42,948 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:42,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1602664477, now seen corresponding path program 1 times [2020-04-18 19:35:42,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:42,963 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [166011912] [2020-04-18 19:35:42,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:42,997 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 39 transitions. [2020-04-18 19:35:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-04-18 19:35:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:35:43,001 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:43,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1602664477, now seen corresponding path program 2 times [2020-04-18 19:35:43,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:43,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888957581] [2020-04-18 19:35:43,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:43,543 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 19:35:43,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888957581] [2020-04-18 19:35:43,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:43,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:43,546 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:43,552 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:43,564 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 39 transitions. [2020-04-18 19:35:43,564 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:43,629 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:43,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:35:43,638 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 7 states. [2020-04-18 19:35:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:43,718 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2020-04-18 19:35:43,719 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2020-04-18 19:35:43,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:43,721 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [166011912] [2020-04-18 19:35:43,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:43,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:43,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [166011912] [2020-04-18 19:35:43,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:35:43,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:43,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:43,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:35:43,730 INFO L87 Difference]: Start difference. First operand 47251 states. Second operand 7 states. [2020-04-18 19:35:46,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:46,110 INFO L93 Difference]: Finished difference Result 111395 states and 474387 transitions. [2020-04-18 19:35:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:35:46,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-04-18 19:35:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:46,363 INFO L225 Difference]: With dead ends: 111395 [2020-04-18 19:35:46,363 INFO L226 Difference]: Without dead ends: 32975 [2020-04-18 19:35:46,365 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:35:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32975 states. [2020-04-18 19:35:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32975 to 26639. [2020-04-18 19:35:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26639 states. [2020-04-18 19:35:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26639 states to 26639 states and 110503 transitions. [2020-04-18 19:35:48,115 INFO L78 Accepts]: Start accepts. Automaton has 26639 states and 110503 transitions. Word has length 39 [2020-04-18 19:35:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:48,118 INFO L479 AbstractCegarLoop]: Abstraction has 26639 states and 110503 transitions. [2020-04-18 19:35:48,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:35:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 26639 states and 110503 transitions. [2020-04-18 19:35:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:35:48,170 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:48,170 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 19:35:48,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:48,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1271093092, now seen corresponding path program 1 times [2020-04-18 19:35:48,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:48,171 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1971083906] [2020-04-18 19:35:48,173 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:48,178 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 137 transitions. [2020-04-18 19:35:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 19:35:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:35:48,181 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1271093092, now seen corresponding path program 2 times [2020-04-18 19:35:48,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:48,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208099655] [2020-04-18 19:35:48,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:48,419 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 19:35:48,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208099655] [2020-04-18 19:35:48,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:48,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:48,421 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:48,426 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:48,441 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 113 transitions. [2020-04-18 19:35:48,442 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:48,496 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:35:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:48,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:35:48,497 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 7 states. [2020-04-18 19:35:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:48,569 INFO L93 Difference]: Finished difference Result 90 states and 137 transitions. [2020-04-18 19:35:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 137 transitions. [2020-04-18 19:35:48,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:48,571 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1971083906] [2020-04-18 19:35:48,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:48,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:48,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1971083906] [2020-04-18 19:35:48,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:35:48,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:48,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:35:48,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:35:48,575 INFO L87 Difference]: Start difference. First operand 26639 states and 110503 transitions. Second operand 7 states. [2020-04-18 19:35:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:50,289 INFO L93 Difference]: Finished difference Result 39375 states and 161731 transitions. [2020-04-18 19:35:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:35:50,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 19:35:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:50,474 INFO L225 Difference]: With dead ends: 39375 [2020-04-18 19:35:50,474 INFO L226 Difference]: Without dead ends: 31199 [2020-04-18 19:35:50,476 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:35:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31199 states. [2020-04-18 19:35:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31199 to 22495. [2020-04-18 19:35:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22495 states. [2020-04-18 19:35:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22495 states to 22495 states and 92695 transitions. [2020-04-18 19:35:51,571 INFO L78 Accepts]: Start accepts. Automaton has 22495 states and 92695 transitions. Word has length 41 [2020-04-18 19:35:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:51,572 INFO L479 AbstractCegarLoop]: Abstraction has 22495 states and 92695 transitions. [2020-04-18 19:35:51,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:35:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 22495 states and 92695 transitions. [2020-04-18 19:35:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:35:51,611 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:51,611 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:35:51,612 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:51,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1286609797, now seen corresponding path program 1 times [2020-04-18 19:35:51,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:51,613 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1408327935] [2020-04-18 19:35:51,614 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:51,618 INFO L259 McrAutomatonBuilder]: Finished intersection with 192 states and 403 transitions. [2020-04-18 19:35:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-04-18 19:35:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:35:51,620 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:51,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:51,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1286609797, now seen corresponding path program 2 times [2020-04-18 19:35:51,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:51,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396112415] [2020-04-18 19:35:51,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:51,757 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 19:35:51,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396112415] [2020-04-18 19:35:51,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:51,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:51,758 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:51,763 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:51,781 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 283 transitions. [2020-04-18 19:35:51,781 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:52,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:35:52,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:35:52,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:35:52,195 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 18 states. [2020-04-18 19:35:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:52,335 INFO L93 Difference]: Finished difference Result 192 states and 403 transitions. [2020-04-18 19:35:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 403 transitions. [2020-04-18 19:35:52,336 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:52,336 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1408327935] [2020-04-18 19:35:52,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:52,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:52,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1408327935] [2020-04-18 19:35:52,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:35:52,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:52,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:35:52,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:35:52,341 INFO L87 Difference]: Start difference. First operand 22495 states and 92695 transitions. Second operand 18 states. [2020-04-18 19:35:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:52,940 INFO L93 Difference]: Finished difference Result 37095 states and 151083 transitions. [2020-04-18 19:35:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:35:52,941 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-04-18 19:35:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:53,134 INFO L225 Difference]: With dead ends: 37095 [2020-04-18 19:35:53,135 INFO L226 Difference]: Without dead ends: 29207 [2020-04-18 19:35:53,136 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:35:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29207 states. [2020-04-18 19:35:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29207 to 22343. [2020-04-18 19:35:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22343 states. [2020-04-18 19:35:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22343 states to 22343 states and 91591 transitions. [2020-04-18 19:35:54,446 INFO L78 Accepts]: Start accepts. Automaton has 22343 states and 91591 transitions. Word has length 43 [2020-04-18 19:35:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:54,447 INFO L479 AbstractCegarLoop]: Abstraction has 22343 states and 91591 transitions. [2020-04-18 19:35:54,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:35:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 22343 states and 91591 transitions. [2020-04-18 19:35:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:35:54,524 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:54,524 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 19:35:54,525 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash 604886969, now seen corresponding path program 1 times [2020-04-18 19:35:54,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:54,526 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1803281487] [2020-04-18 19:35:54,527 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:54,532 INFO L259 McrAutomatonBuilder]: Finished intersection with 251 states and 552 transitions. [2020-04-18 19:35:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states. [2020-04-18 19:35:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:35:54,535 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:54,535 INFO L82 PathProgramCache]: Analyzing trace with hash 604886969, now seen corresponding path program 2 times [2020-04-18 19:35:54,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:54,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213034862] [2020-04-18 19:35:54,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:54,653 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 19:35:54,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213034862] [2020-04-18 19:35:54,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:54,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:54,654 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:54,658 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:54,679 INFO L259 McrAutomatonBuilder]: Finished intersection with 152 states and 288 transitions. [2020-04-18 19:35:54,679 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:54,848 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:35:54,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:35:54,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:35:54,849 INFO L87 Difference]: Start difference. First operand 251 states. Second operand 12 states. [2020-04-18 19:35:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:55,228 INFO L93 Difference]: Finished difference Result 299 states and 646 transitions. [2020-04-18 19:35:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 646 transitions. [2020-04-18 19:35:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:35:55,229 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:55,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1230266489, now seen corresponding path program 3 times [2020-04-18 19:35:55,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:55,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767140428] [2020-04-18 19:35:55,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:55,352 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 19:35:55,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767140428] [2020-04-18 19:35:55,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:55,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:55,354 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:55,359 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:55,380 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 294 transitions. [2020-04-18 19:35:55,381 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:55,598 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:35:55,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:35:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:35:55,599 INFO L87 Difference]: Start difference. First operand 299 states and 646 transitions. Second operand 18 states. [2020-04-18 19:35:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:55,943 INFO L93 Difference]: Finished difference Result 324 states and 670 transitions. [2020-04-18 19:35:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 670 transitions. [2020-04-18 19:35:55,944 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:55,944 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1803281487] [2020-04-18 19:35:55,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:55,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:35:55,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1803281487] [2020-04-18 19:35:55,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:35:55,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:55,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:35:55,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:35:55,947 INFO L87 Difference]: Start difference. First operand 22343 states and 91591 transitions. Second operand 19 states. [2020-04-18 19:35:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:56,611 INFO L93 Difference]: Finished difference Result 38215 states and 153743 transitions. [2020-04-18 19:35:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:35:56,612 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2020-04-18 19:35:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:56,687 INFO L225 Difference]: With dead ends: 38215 [2020-04-18 19:35:56,688 INFO L226 Difference]: Without dead ends: 26375 [2020-04-18 19:35:56,689 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:35:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26375 states. [2020-04-18 19:35:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26375 to 19351. [2020-04-18 19:35:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19351 states. [2020-04-18 19:35:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19351 states to 19351 states and 77819 transitions. [2020-04-18 19:35:57,320 INFO L78 Accepts]: Start accepts. Automaton has 19351 states and 77819 transitions. Word has length 44 [2020-04-18 19:35:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:57,321 INFO L479 AbstractCegarLoop]: Abstraction has 19351 states and 77819 transitions. [2020-04-18 19:35:57,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:35:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19351 states and 77819 transitions. [2020-04-18 19:35:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:35:57,350 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:57,350 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:35:57,350 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:57,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:57,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1295710086, now seen corresponding path program 1 times [2020-04-18 19:35:57,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:57,351 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1709451088] [2020-04-18 19:35:57,353 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:57,361 INFO L259 McrAutomatonBuilder]: Finished intersection with 522 states and 1469 transitions. [2020-04-18 19:35:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states. [2020-04-18 19:35:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:35:57,366 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:57,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1758855238, now seen corresponding path program 2 times [2020-04-18 19:35:57,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:57,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960347872] [2020-04-18 19:35:57,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:57,483 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 19:35:57,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960347872] [2020-04-18 19:35:57,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:57,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:57,484 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:57,494 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:57,566 INFO L259 McrAutomatonBuilder]: Finished intersection with 279 states and 691 transitions. [2020-04-18 19:35:57,566 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:57,651 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:35:57,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:57,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:35:57,652 INFO L87 Difference]: Start difference. First operand 522 states. Second operand 9 states. [2020-04-18 19:35:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:57,775 INFO L93 Difference]: Finished difference Result 522 states and 1469 transitions. [2020-04-18 19:35:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1469 transitions. [2020-04-18 19:35:57,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:35:57,777 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1709451088] [2020-04-18 19:35:57,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:35:57,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:35:57,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1709451088] [2020-04-18 19:35:57,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:35:57,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:35:57,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:57,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:35:57,779 INFO L87 Difference]: Start difference. First operand 19351 states and 77819 transitions. Second operand 9 states. [2020-04-18 19:35:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:58,482 INFO L93 Difference]: Finished difference Result 38671 states and 154697 transitions. [2020-04-18 19:35:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:35:58,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-04-18 19:35:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:35:58,543 INFO L225 Difference]: With dead ends: 38671 [2020-04-18 19:35:58,543 INFO L226 Difference]: Without dead ends: 21063 [2020-04-18 19:35:58,544 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:35:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21063 states. [2020-04-18 19:35:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21063 to 16199. [2020-04-18 19:35:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16199 states. [2020-04-18 19:35:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16199 states to 16199 states and 64777 transitions. [2020-04-18 19:35:58,996 INFO L78 Accepts]: Start accepts. Automaton has 16199 states and 64777 transitions. Word has length 45 [2020-04-18 19:35:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:35:58,996 INFO L479 AbstractCegarLoop]: Abstraction has 16199 states and 64777 transitions. [2020-04-18 19:35:58,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:35:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 16199 states and 64777 transitions. [2020-04-18 19:35:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:35:59,018 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:35:59,018 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:35:59,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:35:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:59,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1571469873, now seen corresponding path program 1 times [2020-04-18 19:35:59,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:35:59,019 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [311507289] [2020-04-18 19:35:59,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:59,034 INFO L259 McrAutomatonBuilder]: Finished intersection with 675 states and 1970 transitions. [2020-04-18 19:35:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states. [2020-04-18 19:35:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:35:59,041 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:35:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:59,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1310062293, now seen corresponding path program 2 times [2020-04-18 19:35:59,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:59,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743686064] [2020-04-18 19:35:59,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:59,151 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 19:35:59,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743686064] [2020-04-18 19:35:59,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:59,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:35:59,152 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:59,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:59,203 INFO L259 McrAutomatonBuilder]: Finished intersection with 285 states and 702 transitions. [2020-04-18 19:35:59,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:35:59,267 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:35:59,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:35:59,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:35:59,268 INFO L87 Difference]: Start difference. First operand 675 states. Second operand 9 states. [2020-04-18 19:35:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:35:59,710 INFO L93 Difference]: Finished difference Result 786 states and 2140 transitions. [2020-04-18 19:35:59,710 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 2140 transitions. [2020-04-18 19:35:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:35:59,712 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:35:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:35:59,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1571469873, now seen corresponding path program 3 times [2020-04-18 19:35:59,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:35:59,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362564083] [2020-04-18 19:35:59,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:35:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:35:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:35:59,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362564083] [2020-04-18 19:35:59,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:35:59,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:35:59,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:35:59,810 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:35:59,852 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 746 transitions. [2020-04-18 19:35:59,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:00,283 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 49 times. [2020-04-18 19:36:00,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:36:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:36:00,284 INFO L87 Difference]: Start difference. First operand 786 states and 2140 transitions. Second operand 23 states. [2020-04-18 19:36:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:00,940 INFO L93 Difference]: Finished difference Result 958 states and 2562 transitions. [2020-04-18 19:36:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 2562 transitions. [2020-04-18 19:36:00,941 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:00,942 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [311507289] [2020-04-18 19:36:00,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:00,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:36:00,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [311507289] [2020-04-18 19:36:00,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:36:00,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:00,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:36:00,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=1614, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 19:36:00,944 INFO L87 Difference]: Start difference. First operand 16199 states and 64777 transitions. Second operand 25 states. [2020-04-18 19:36:01,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:01,655 INFO L93 Difference]: Finished difference Result 29127 states and 115449 transitions. [2020-04-18 19:36:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 19:36:01,656 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-04-18 19:36:01,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:01,698 INFO L225 Difference]: With dead ends: 29127 [2020-04-18 19:36:01,698 INFO L226 Difference]: Without dead ends: 20199 [2020-04-18 19:36:01,699 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=635, Invalid=1915, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 19:36:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20199 states. [2020-04-18 19:36:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20199 to 14375. [2020-04-18 19:36:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14375 states. [2020-04-18 19:36:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14375 states to 14375 states and 56945 transitions. [2020-04-18 19:36:02,033 INFO L78 Accepts]: Start accepts. Automaton has 14375 states and 56945 transitions. Word has length 46 [2020-04-18 19:36:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:02,033 INFO L479 AbstractCegarLoop]: Abstraction has 14375 states and 56945 transitions. [2020-04-18 19:36:02,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:36:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 14375 states and 56945 transitions. [2020-04-18 19:36:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:36:02,051 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:02,051 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] [2020-04-18 19:36:02,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:02,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:02,051 INFO L82 PathProgramCache]: Analyzing trace with hash 132919, now seen corresponding path program 1 times [2020-04-18 19:36:02,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:02,052 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1935097570] [2020-04-18 19:36:02,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:02,071 INFO L259 McrAutomatonBuilder]: Finished intersection with 1224 states and 4223 transitions. [2020-04-18 19:36:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states. [2020-04-18 19:36:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:36:02,080 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:02,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:02,080 INFO L82 PathProgramCache]: Analyzing trace with hash -107824857, now seen corresponding path program 2 times [2020-04-18 19:36:02,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:02,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319828392] [2020-04-18 19:36:02,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:02,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319828392] [2020-04-18 19:36:02,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:02,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:02,182 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:02,186 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:02,286 INFO L259 McrAutomatonBuilder]: Finished intersection with 447 states and 1283 transitions. [2020-04-18 19:36:02,286 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:02,349 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:36:02,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:36:02,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:36:02,350 INFO L87 Difference]: Start difference. First operand 1224 states. Second operand 8 states. [2020-04-18 19:36:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:02,493 INFO L93 Difference]: Finished difference Result 1386 states and 4682 transitions. [2020-04-18 19:36:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4682 transitions. [2020-04-18 19:36:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:36:02,497 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:36:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash -570970009, now seen corresponding path program 3 times [2020-04-18 19:36:02,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:02,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633419003] [2020-04-18 19:36:02,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:02,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633419003] [2020-04-18 19:36:02,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:02,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:02,577 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:02,581 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:02,678 INFO L259 McrAutomatonBuilder]: Finished intersection with 496 states and 1439 transitions. [2020-04-18 19:36:02,679 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:02,708 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:36:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:02,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:36:02,709 INFO L87 Difference]: Start difference. First operand 1386 states and 4682 transitions. Second operand 7 states. [2020-04-18 19:36:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:02,886 INFO L93 Difference]: Finished difference Result 1569 states and 5077 transitions. [2020-04-18 19:36:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 5077 transitions. [2020-04-18 19:36:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:36:02,890 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:36:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash 132919, now seen corresponding path program 4 times [2020-04-18 19:36:02,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:02,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399811044] [2020-04-18 19:36:02,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:02,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399811044] [2020-04-18 19:36:02,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:02,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:02,992 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:02,998 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:03,089 INFO L259 McrAutomatonBuilder]: Finished intersection with 452 states and 1311 transitions. [2020-04-18 19:36:03,090 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:03,174 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:36:03,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:03,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:36:03,175 INFO L87 Difference]: Start difference. First operand 1569 states and 5077 transitions. Second operand 6 states. [2020-04-18 19:36:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:03,233 INFO L93 Difference]: Finished difference Result 1569 states and 5077 transitions. [2020-04-18 19:36:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 5077 transitions. [2020-04-18 19:36:03,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:03,236 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1935097570] [2020-04-18 19:36:03,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:03,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:36:03,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1935097570] [2020-04-18 19:36:03,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:36:03,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:03,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:36:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:36:03,237 INFO L87 Difference]: Start difference. First operand 14375 states and 56945 transitions. Second operand 14 states. [2020-04-18 19:36:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:04,536 INFO L93 Difference]: Finished difference Result 25631 states and 100295 transitions. [2020-04-18 19:36:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-04-18 19:36:04,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-04-18 19:36:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:04,574 INFO L225 Difference]: With dead ends: 25631 [2020-04-18 19:36:04,575 INFO L226 Difference]: Without dead ends: 18655 [2020-04-18 19:36:04,576 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=892, Invalid=4078, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 19:36:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18655 states. [2020-04-18 19:36:04,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18655 to 13811. [2020-04-18 19:36:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13811 states. [2020-04-18 19:36:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13811 states to 13811 states and 54305 transitions. [2020-04-18 19:36:04,885 INFO L78 Accepts]: Start accepts. Automaton has 13811 states and 54305 transitions. Word has length 47 [2020-04-18 19:36:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:04,885 INFO L479 AbstractCegarLoop]: Abstraction has 13811 states and 54305 transitions. [2020-04-18 19:36:04,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:36:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13811 states and 54305 transitions. [2020-04-18 19:36:04,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:36:04,904 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:04,904 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 19:36:04,904 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:04,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1732002580, now seen corresponding path program 1 times [2020-04-18 19:36:04,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:04,905 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1293043425] [2020-04-18 19:36:04,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:04,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 1575 states and 5600 transitions. [2020-04-18 19:36:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states. [2020-04-18 19:36:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:36:04,952 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:04,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1793179012, now seen corresponding path program 2 times [2020-04-18 19:36:04,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:04,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585481550] [2020-04-18 19:36:04,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:05,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585481550] [2020-04-18 19:36:05,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:05,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:05,061 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:05,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:05,108 INFO L259 McrAutomatonBuilder]: Finished intersection with 279 states and 685 transitions. [2020-04-18 19:36:05,109 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:05,168 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:36:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:36:05,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:36:05,169 INFO L87 Difference]: Start difference. First operand 1575 states. Second operand 9 states. [2020-04-18 19:36:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:05,380 INFO L93 Difference]: Finished difference Result 1881 states and 6449 transitions. [2020-04-18 19:36:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 6449 transitions. [2020-04-18 19:36:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:36:05,382 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:36:05,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:05,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1268857428, now seen corresponding path program 3 times [2020-04-18 19:36:05,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:05,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206179034] [2020-04-18 19:36:05,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:05,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206179034] [2020-04-18 19:36:05,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:05,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:05,468 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:05,473 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:05,534 INFO L259 McrAutomatonBuilder]: Finished intersection with 323 states and 847 transitions. [2020-04-18 19:36:05,534 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:05,549 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:36:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:05,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:36:05,550 INFO L87 Difference]: Start difference. First operand 1881 states and 6449 transitions. Second operand 6 states. [2020-04-18 19:36:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:05,617 INFO L93 Difference]: Finished difference Result 2157 states and 7203 transitions. [2020-04-18 19:36:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 7203 transitions. [2020-04-18 19:36:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:36:05,620 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:36:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1732002580, now seen corresponding path program 4 times [2020-04-18 19:36:05,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:05,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097458274] [2020-04-18 19:36:05,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:05,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097458274] [2020-04-18 19:36:05,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:05,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:05,700 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:05,704 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:05,976 INFO L259 McrAutomatonBuilder]: Finished intersection with 354 states and 940 transitions. [2020-04-18 19:36:05,977 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:06,079 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:36:06,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:06,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:36:06,080 INFO L87 Difference]: Start difference. First operand 2157 states and 7203 transitions. Second operand 7 states. [2020-04-18 19:36:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:06,200 INFO L93 Difference]: Finished difference Result 2157 states and 7203 transitions. [2020-04-18 19:36:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 7203 transitions. [2020-04-18 19:36:06,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:06,204 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1293043425] [2020-04-18 19:36:06,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:06,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:36:06,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1293043425] [2020-04-18 19:36:06,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:36:06,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:06,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:36:06,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:36:06,206 INFO L87 Difference]: Start difference. First operand 13811 states and 54305 transitions. Second operand 15 states. [2020-04-18 19:36:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:07,470 INFO L93 Difference]: Finished difference Result 22027 states and 84853 transitions. [2020-04-18 19:36:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-04-18 19:36:07,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-04-18 19:36:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:07,501 INFO L225 Difference]: With dead ends: 22027 [2020-04-18 19:36:07,501 INFO L226 Difference]: Without dead ends: 15499 [2020-04-18 19:36:07,503 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=879, Invalid=4523, Unknown=0, NotChecked=0, Total=5402 [2020-04-18 19:36:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15499 states. [2020-04-18 19:36:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15499 to 11525. [2020-04-18 19:36:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11525 states. [2020-04-18 19:36:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11525 states to 11525 states and 44207 transitions. [2020-04-18 19:36:07,713 INFO L78 Accepts]: Start accepts. Automaton has 11525 states and 44207 transitions. Word has length 48 [2020-04-18 19:36:07,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:07,713 INFO L479 AbstractCegarLoop]: Abstraction has 11525 states and 44207 transitions. [2020-04-18 19:36:07,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:36:07,713 INFO L276 IsEmpty]: Start isEmpty. Operand 11525 states and 44207 transitions. [2020-04-18 19:36:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:36:07,726 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:07,726 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, 1] [2020-04-18 19:36:07,726 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:07,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:07,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1003171084, now seen corresponding path program 1 times [2020-04-18 19:36:07,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:07,727 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1417313403] [2020-04-18 19:36:07,728 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:07,760 INFO L259 McrAutomatonBuilder]: Finished intersection with 2091 states and 7627 transitions. [2020-04-18 19:36:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states. [2020-04-18 19:36:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:36:07,781 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:07,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1902750980, now seen corresponding path program 2 times [2020-04-18 19:36:07,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:07,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460488465] [2020-04-18 19:36:07,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:07,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460488465] [2020-04-18 19:36:07,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:07,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:07,881 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:07,889 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:07,938 INFO L259 McrAutomatonBuilder]: Finished intersection with 263 states and 643 transitions. [2020-04-18 19:36:07,939 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:07,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:36:07,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:07,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:36:07,973 INFO L87 Difference]: Start difference. First operand 2091 states. Second operand 7 states. [2020-04-18 19:36:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:08,153 INFO L93 Difference]: Finished difference Result 2499 states and 8793 transitions. [2020-04-18 19:36:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 8793 transitions. [2020-04-18 19:36:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:36:08,157 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:36:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:08,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1466316236, now seen corresponding path program 3 times [2020-04-18 19:36:08,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:08,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363683116] [2020-04-18 19:36:08,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:08,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363683116] [2020-04-18 19:36:08,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:08,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:08,230 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:08,234 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:08,288 INFO L259 McrAutomatonBuilder]: Finished intersection with 275 states and 689 transitions. [2020-04-18 19:36:08,288 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:08,298 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:36:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:08,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:36:08,299 INFO L87 Difference]: Start difference. First operand 2499 states and 8793 transitions. Second operand 6 states. [2020-04-18 19:36:08,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:08,378 INFO L93 Difference]: Finished difference Result 2867 states and 9829 transitions. [2020-04-18 19:36:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 9829 transitions. [2020-04-18 19:36:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:36:08,382 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:36:08,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:08,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1003171084, now seen corresponding path program 4 times [2020-04-18 19:36:08,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:08,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943958854] [2020-04-18 19:36:08,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:08,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943958854] [2020-04-18 19:36:08,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:08,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:08,473 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:08,477 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:08,539 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 801 transitions. [2020-04-18 19:36:08,539 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:08,633 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:36:08,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:36:08,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:36:08,634 INFO L87 Difference]: Start difference. First operand 2867 states and 9829 transitions. Second operand 8 states. [2020-04-18 19:36:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:09,008 INFO L93 Difference]: Finished difference Result 2867 states and 9829 transitions. [2020-04-18 19:36:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 9829 transitions. [2020-04-18 19:36:09,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:09,014 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1417313403] [2020-04-18 19:36:09,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:09,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:36:09,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1417313403] [2020-04-18 19:36:09,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:36:09,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:09,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:36:09,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:36:09,016 INFO L87 Difference]: Start difference. First operand 11525 states and 44207 transitions. Second operand 14 states. [2020-04-18 19:36:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:09,875 INFO L93 Difference]: Finished difference Result 12056 states and 45257 transitions. [2020-04-18 19:36:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 19:36:09,875 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-04-18 19:36:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:09,890 INFO L225 Difference]: With dead ends: 12056 [2020-04-18 19:36:09,890 INFO L226 Difference]: Without dead ends: 7520 [2020-04-18 19:36:09,891 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=568, Invalid=3464, Unknown=0, NotChecked=0, Total=4032 [2020-04-18 19:36:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2020-04-18 19:36:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7520. [2020-04-18 19:36:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2020-04-18 19:36:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 27740 transitions. [2020-04-18 19:36:10,000 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 27740 transitions. Word has length 49 [2020-04-18 19:36:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:10,000 INFO L479 AbstractCegarLoop]: Abstraction has 7520 states and 27740 transitions. [2020-04-18 19:36:10,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:36:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 27740 transitions. [2020-04-18 19:36:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:36:10,010 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:10,010 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, 1, 1, 1] [2020-04-18 19:36:10,010 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:10,010 INFO L82 PathProgramCache]: Analyzing trace with hash 387584019, now seen corresponding path program 1 times [2020-04-18 19:36:10,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:10,011 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [460584825] [2020-04-18 19:36:10,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:10,068 INFO L259 McrAutomatonBuilder]: Finished intersection with 3435 states and 13059 transitions. [2020-04-18 19:36:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states. [2020-04-18 19:36:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:36:10,095 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:10,095 INFO L82 PathProgramCache]: Analyzing trace with hash -813695075, now seen corresponding path program 2 times [2020-04-18 19:36:10,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:10,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531552018] [2020-04-18 19:36:10,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:10,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531552018] [2020-04-18 19:36:10,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:10,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:10,193 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:10,197 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:10,250 INFO L259 McrAutomatonBuilder]: Finished intersection with 275 states and 665 transitions. [2020-04-18 19:36:10,250 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:10,324 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:36:10,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:36:10,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:36:10,325 INFO L87 Difference]: Start difference. First operand 3435 states. Second operand 9 states. [2020-04-18 19:36:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:10,654 INFO L93 Difference]: Finished difference Result 4691 states and 16765 transitions. [2020-04-18 19:36:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 16765 transitions. [2020-04-18 19:36:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:36:10,663 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:36:10,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:10,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1545441683, now seen corresponding path program 3 times [2020-04-18 19:36:10,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:10,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337487081] [2020-04-18 19:36:10,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:10,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337487081] [2020-04-18 19:36:10,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:10,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:10,735 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:10,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:10,786 INFO L259 McrAutomatonBuilder]: Finished intersection with 287 states and 711 transitions. [2020-04-18 19:36:10,786 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:10,798 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:36:10,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:36:10,799 INFO L87 Difference]: Start difference. First operand 4691 states and 16765 transitions. Second operand 6 states. [2020-04-18 19:36:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:10,885 INFO L93 Difference]: Finished difference Result 5923 states and 20993 transitions. [2020-04-18 19:36:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5923 states and 20993 transitions. [2020-04-18 19:36:10,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:36:10,892 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:36:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:10,893 INFO L82 PathProgramCache]: Analyzing trace with hash 827893835, now seen corresponding path program 4 times [2020-04-18 19:36:10,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:10,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854595879] [2020-04-18 19:36:10,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:10,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854595879] [2020-04-18 19:36:10,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:10,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:10,987 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:10,992 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:11,048 INFO L259 McrAutomatonBuilder]: Finished intersection with 388 states and 964 transitions. [2020-04-18 19:36:11,048 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:11,132 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:36:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:36:11,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:36:11,133 INFO L87 Difference]: Start difference. First operand 5923 states and 20993 transitions. Second operand 8 states. [2020-04-18 19:36:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:11,602 INFO L93 Difference]: Finished difference Result 5923 states and 20993 transitions. [2020-04-18 19:36:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5923 states and 20993 transitions. [2020-04-18 19:36:11,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:11,619 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [460584825] [2020-04-18 19:36:11,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:11,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:36:11,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [460584825] [2020-04-18 19:36:11,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:36:11,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:11,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:36:11,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:36:11,624 INFO L87 Difference]: Start difference. First operand 7520 states and 27740 transitions. Second operand 16 states. [2020-04-18 19:36:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:12,576 INFO L93 Difference]: Finished difference Result 7435 states and 26921 transitions. [2020-04-18 19:36:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-04-18 19:36:12,577 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-04-18 19:36:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:12,584 INFO L225 Difference]: With dead ends: 7435 [2020-04-18 19:36:12,584 INFO L226 Difference]: Without dead ends: 3391 [2020-04-18 19:36:12,586 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=675, Invalid=4017, Unknown=0, NotChecked=0, Total=4692 [2020-04-18 19:36:12,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2020-04-18 19:36:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3081. [2020-04-18 19:36:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3081 states. [2020-04-18 19:36:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 10975 transitions. [2020-04-18 19:36:12,630 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 10975 transitions. Word has length 51 [2020-04-18 19:36:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:12,630 INFO L479 AbstractCegarLoop]: Abstraction has 3081 states and 10975 transitions. [2020-04-18 19:36:12,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:36:12,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 10975 transitions. [2020-04-18 19:36:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:36:12,635 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:36:12,635 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, 1, 1, 1, 1, 1] [2020-04-18 19:36:12,636 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:36:12,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:12,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1178693610, now seen corresponding path program 1 times [2020-04-18 19:36:12,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:36:12,636 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2071036059] [2020-04-18 19:36:12,638 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:12,737 INFO L259 McrAutomatonBuilder]: Finished intersection with 5715 states and 22515 transitions. [2020-04-18 19:36:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5715 states. [2020-04-18 19:36:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:36:12,776 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:36:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1867014886, now seen corresponding path program 2 times [2020-04-18 19:36:12,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:12,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789897857] [2020-04-18 19:36:12,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:12,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789897857] [2020-04-18 19:36:12,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:12,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:36:12,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:12,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:12,968 INFO L259 McrAutomatonBuilder]: Finished intersection with 484 states and 1269 transitions. [2020-04-18 19:36:12,968 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:13,000 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:36:13,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:36:13,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:36:13,001 INFO L87 Difference]: Start difference. First operand 5715 states. Second operand 6 states. [2020-04-18 19:36:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:13,222 INFO L93 Difference]: Finished difference Result 11731 states and 45123 transitions. [2020-04-18 19:36:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 11731 states and 45123 transitions. [2020-04-18 19:36:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:36:13,236 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:36:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:13,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1200077658, now seen corresponding path program 3 times [2020-04-18 19:36:13,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:13,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254432572] [2020-04-18 19:36:13,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:13,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254432572] [2020-04-18 19:36:13,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:13,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:13,335 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:13,340 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:13,449 INFO L259 McrAutomatonBuilder]: Finished intersection with 514 states and 1320 transitions. [2020-04-18 19:36:13,450 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:13,526 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 19:36:13,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:36:13,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:36:13,526 INFO L87 Difference]: Start difference. First operand 11731 states and 45123 transitions. Second operand 10 states. [2020-04-18 19:36:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:14,107 INFO L93 Difference]: Finished difference Result 18275 states and 68137 transitions. [2020-04-18 19:36:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18275 states and 68137 transitions. [2020-04-18 19:36:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:36:14,151 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:36:14,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:14,152 INFO L82 PathProgramCache]: Analyzing trace with hash -337286070, now seen corresponding path program 4 times [2020-04-18 19:36:14,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:14,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125387649] [2020-04-18 19:36:14,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:14,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125387649] [2020-04-18 19:36:14,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:14,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:36:14,254 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:14,260 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:14,336 INFO L259 McrAutomatonBuilder]: Finished intersection with 308 states and 770 transitions. [2020-04-18 19:36:14,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:14,354 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:36:14,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:36:14,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:36:14,355 INFO L87 Difference]: Start difference. First operand 18275 states and 68137 transitions. Second operand 7 states. [2020-04-18 19:36:14,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:14,624 INFO L93 Difference]: Finished difference Result 22235 states and 81121 transitions. [2020-04-18 19:36:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 22235 states and 81121 transitions. [2020-04-18 19:36:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:36:14,649 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:36:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1683981014, now seen corresponding path program 5 times [2020-04-18 19:36:14,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:14,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159831433] [2020-04-18 19:36:14,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:14,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159831433] [2020-04-18 19:36:14,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:14,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:14,731 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:14,736 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:15,070 INFO L259 McrAutomatonBuilder]: Finished intersection with 461 states and 1135 transitions. [2020-04-18 19:36:15,070 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:15,273 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:36:15,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:36:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:36:15,275 INFO L87 Difference]: Start difference. First operand 22235 states and 81121 transitions. Second operand 8 states. [2020-04-18 19:36:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:15,921 INFO L93 Difference]: Finished difference Result 22369 states and 81251 transitions. [2020-04-18 19:36:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 22369 states and 81251 transitions. [2020-04-18 19:36:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:36:15,946 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:36:15,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1058461034, now seen corresponding path program 6 times [2020-04-18 19:36:15,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:15,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155353580] [2020-04-18 19:36:15,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:16,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155353580] [2020-04-18 19:36:16,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:16,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:16,056 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:16,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:16,157 INFO L259 McrAutomatonBuilder]: Finished intersection with 294 states and 754 transitions. [2020-04-18 19:36:16,157 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:16,201 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:36:16,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:36:16,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1891, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 19:36:16,203 INFO L87 Difference]: Start difference. First operand 22369 states and 81251 transitions. Second operand 8 states. [2020-04-18 19:36:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:16,732 INFO L93 Difference]: Finished difference Result 27905 states and 99045 transitions. [2020-04-18 19:36:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 27905 states and 99045 transitions. [2020-04-18 19:36:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:36:16,778 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 19:36:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:36:16,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1197320758, now seen corresponding path program 7 times [2020-04-18 19:36:16,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:36:16,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865678635] [2020-04-18 19:36:16,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:36:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:36:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:36:16,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865678635] [2020-04-18 19:36:16,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:36:16,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:36:16,879 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:36:16,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:36:16,948 INFO L259 McrAutomatonBuilder]: Finished intersection with 350 states and 928 transitions. [2020-04-18 19:36:16,948 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:36:17,037 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:36:17,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:36:17,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=2818, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 19:36:17,039 INFO L87 Difference]: Start difference. First operand 27905 states and 99045 transitions. Second operand 9 states. [2020-04-18 19:36:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:17,468 INFO L93 Difference]: Finished difference Result 36787 states and 128731 transitions. [2020-04-18 19:36:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 36787 states and 128731 transitions. [2020-04-18 19:36:17,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:17,510 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2071036059] [2020-04-18 19:36:17,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:36:17,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:36:17,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2071036059] [2020-04-18 19:36:17,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-18 19:36:17,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:36:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 19:36:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=3562, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 19:36:17,511 INFO L87 Difference]: Start difference. First operand 3081 states and 10975 transitions. Second operand 21 states. [2020-04-18 19:36:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:36:18,175 INFO L93 Difference]: Finished difference Result 2919 states and 10381 transitions. [2020-04-18 19:36:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:36:18,176 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 53 [2020-04-18 19:36:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:36:18,176 INFO L225 Difference]: With dead ends: 2919 [2020-04-18 19:36:18,176 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:36:18,178 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=906, Invalid=5900, Unknown=0, NotChecked=0, Total=6806 [2020-04-18 19:36:18,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:36:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:36:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:36:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:36:18,179 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-04-18 19:36:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:36:18,179 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:36:18,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-18 19:36:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:36:18,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:36:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:36:18 BasicIcfg [2020-04-18 19:36:18,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:36:18,187 INFO L168 Benchmark]: Toolchain (without parser) took 42032.36 ms. Allocated memory was 138.9 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 102.7 MB in the beginning and 292.7 MB in the end (delta: -190.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-04-18 19:36:18,187 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:36:18,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.10 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 159.3 MB in the end (delta: -58.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:18,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.82 ms. Allocated memory is still 202.4 MB. Free memory was 159.3 MB in the beginning and 156.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:18,189 INFO L168 Benchmark]: Boogie Preprocessor took 33.66 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:18,189 INFO L168 Benchmark]: RCFGBuilder took 500.23 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 131.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:36:18,190 INFO L168 Benchmark]: TraceAbstraction took 40652.82 ms. Allocated memory was 202.4 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 131.4 MB in the beginning and 292.7 MB in the end (delta: -161.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-04-18 19:36:18,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.10 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 159.3 MB in the end (delta: -58.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 73.82 ms. Allocated memory is still 202.4 MB. Free memory was 159.3 MB in the beginning and 156.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.66 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.23 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 131.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40652.82 ms. Allocated memory was 202.4 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 131.4 MB in the beginning and 292.7 MB in the end (delta: -161.3 MB). Peak memory consumption was 1.4 GB. 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 1276 SDtfs, 7089 SDslu, 9146 SDs, 0 SdLazy, 2005 SolverSat, 745 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2028 GetRequests, 1526 SyntacticMatches, 1 SemanticMatches, 501 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9949 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47251occurred 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: 6.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 48744 StatesRemovedByMinimization, 9 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...