/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/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:04:56,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:04:56,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:04:56,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:04:56,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:04:56,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:04:56,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:04:56,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:04:56,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:04:56,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:04:56,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:04:56,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:04:56,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:04:56,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:04:56,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:04:56,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:04:56,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:04:56,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:04:56,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:04:56,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:04:56,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:04:56,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:04:56,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:04:56,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:04:56,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:04:56,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:04:56,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:04:56,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:04:56,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:04:56,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:04:56,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:04:56,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:04:56,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:04:56,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:04:56,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:04:56,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:04:56,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:04:56,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:04:56,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:04:56,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:04:56,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:04:56,984 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 20:04:57,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:04:57,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:04:57,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:04:57,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:04:57,016 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:04:57,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:04:57,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:04:57,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:04:57,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:04:57,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:04:57,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:04:57,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:04:57,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:04:57,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:04:57,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:04:57,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:04:57,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:04:57,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:04:57,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:04:57,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:04:57,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:04:57,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:04:57,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:04:57,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:04:57,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:04:57,028 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:04:57,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:04:57,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:04:57,028 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:04:57,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:04:57,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:04:57,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:04:57,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:04:57,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:04:57,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:04:57,316 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:04:57,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 20:04:57,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f413fbd8a/66d45da47523485cb5796b380a967f0d/FLAGc37ade130 [2020-04-18 20:04:57,911 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:04:57,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-04-18 20:04:57,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f413fbd8a/66d45da47523485cb5796b380a967f0d/FLAGc37ade130 [2020-04-18 20:04:58,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f413fbd8a/66d45da47523485cb5796b380a967f0d [2020-04-18 20:04:58,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:04:58,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:04:58,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:04:58,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:04:58,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:04:58,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e9607f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58, skipping insertion in model container [2020-04-18 20:04:58,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:04:58,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:04:58,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:04:58,725 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:04:58,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:04:58,868 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:04:58,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58 WrapperNode [2020-04-18 20:04:58,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:04:58,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:04:58,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:04:58,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:04:58,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:04:58,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:04:58,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:04:58,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:04:58,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (1/1) ... [2020-04-18 20:04:58,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:04:58,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:04:58,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:04:58,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:04:58,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (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 20:04:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:04:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:04:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:04:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:04:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:04:59,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:04:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:04:59,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:04:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:04:59,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:04:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:04:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:04:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:04:59,017 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 20:04:59,414 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:04:59,414 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:04:59,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:04:59 BoogieIcfgContainer [2020-04-18 20:04:59,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:04:59,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:04:59,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:04:59,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:04:59,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:04:58" (1/3) ... [2020-04-18 20:04:59,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175dad4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:04:59, skipping insertion in model container [2020-04-18 20:04:59,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:58" (2/3) ... [2020-04-18 20:04:59,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175dad4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:04:59, skipping insertion in model container [2020-04-18 20:04:59,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:04:59" (3/3) ... [2020-04-18 20:04:59,426 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-04-18 20:04:59,434 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:04:59,435 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:04:59,442 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:04:59,443 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:04:59,467 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,468 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,468 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,468 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,469 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,469 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,470 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,470 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,470 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,470 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,471 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,471 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,472 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,472 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,472 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,472 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,473 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,473 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,477 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,477 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,478 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,478 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,484 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,484 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,485 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,485 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,489 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,489 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,489 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,490 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:59,506 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 20:04:59,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:04:59,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:04:59,526 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:04:59,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:04:59,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:04:59,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:04:59,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:04:59,527 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:04:59,540 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 20:05:00,070 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 20:05:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 20:05:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:05:00,112 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:00,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:00,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash 658513141, now seen corresponding path program 1 times [2020-04-18 20:05:00,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:00,129 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [975500293] [2020-04-18 20:05:00,148 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:00,166 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:05:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 20:05:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:05:00,170 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:00,170 INFO L82 PathProgramCache]: Analyzing trace with hash 658513141, now seen corresponding path program 2 times [2020-04-18 20:05:00,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:00,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766737719] [2020-04-18 20:05:00,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:00,716 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 20:05:00,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766737719] [2020-04-18 20:05:00,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:00,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:00,720 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:00,724 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:00,737 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:05:00,737 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:00,797 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:00,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:00,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:00,804 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 20:05:00,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:00,922 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 20:05:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 20:05:00,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:00,926 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [975500293] [2020-04-18 20:05:00,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:00,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:00,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [975500293] [2020-04-18 20:05:00,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:05:00,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:00,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:00,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:05:00,936 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 20:05:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:01,444 INFO L93 Difference]: Finished difference Result 19956 states and 68898 transitions. [2020-04-18 20:05:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:05:01,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 20:05:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:01,519 INFO L225 Difference]: With dead ends: 19956 [2020-04-18 20:05:01,520 INFO L226 Difference]: Without dead ends: 5718 [2020-04-18 20:05:01,523 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:05:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2020-04-18 20:05:01,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 4428. [2020-04-18 20:05:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4428 states. [2020-04-18 20:05:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 14501 transitions. [2020-04-18 20:05:01,919 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 14501 transitions. Word has length 36 [2020-04-18 20:05:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:01,922 INFO L479 AbstractCegarLoop]: Abstraction has 4428 states and 14501 transitions. [2020-04-18 20:05:01,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:05:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 14501 transitions. [2020-04-18 20:05:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:05:01,935 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:01,943 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:01,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:01,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1267692684, now seen corresponding path program 1 times [2020-04-18 20:05:01,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:01,945 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1305224591] [2020-04-18 20:05:01,947 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:01,950 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 20:05:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 20:05:01,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:05:01,956 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:01,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1267692684, now seen corresponding path program 2 times [2020-04-18 20:05:01,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:01,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50396968] [2020-04-18 20:05:01,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:02,120 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 20:05:02,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50396968] [2020-04-18 20:05:02,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:02,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:02,122 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:02,126 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:02,133 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 20:05:02,134 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:02,169 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:02,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:02,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:02,171 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-04-18 20:05:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:02,229 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 20:05:02,229 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 20:05:02,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:02,232 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1305224591] [2020-04-18 20:05:02,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:02,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:02,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1305224591] [2020-04-18 20:05:02,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:05:02,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:02,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:02,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:05:02,237 INFO L87 Difference]: Start difference. First operand 4428 states and 14501 transitions. Second operand 6 states. [2020-04-18 20:05:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:02,380 INFO L93 Difference]: Finished difference Result 4778 states and 15501 transitions. [2020-04-18 20:05:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:05:02,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 20:05:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:02,404 INFO L225 Difference]: With dead ends: 4778 [2020-04-18 20:05:02,405 INFO L226 Difference]: Without dead ends: 3082 [2020-04-18 20:05:02,407 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:05:02,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2020-04-18 20:05:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 2961. [2020-04-18 20:05:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-04-18 20:05:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 9725 transitions. [2020-04-18 20:05:02,516 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 9725 transitions. Word has length 38 [2020-04-18 20:05:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:02,517 INFO L479 AbstractCegarLoop]: Abstraction has 2961 states and 9725 transitions. [2020-04-18 20:05:02,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:05:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 9725 transitions. [2020-04-18 20:05:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:02,627 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:02,627 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 20:05:02,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:02,628 INFO L82 PathProgramCache]: Analyzing trace with hash 329489983, now seen corresponding path program 1 times [2020-04-18 20:05:02,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:02,628 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [874568402] [2020-04-18 20:05:02,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:02,638 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 421 transitions. [2020-04-18 20:05:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-04-18 20:05:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:02,641 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:02,641 INFO L82 PathProgramCache]: Analyzing trace with hash -185158389, now seen corresponding path program 2 times [2020-04-18 20:05:02,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:02,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703162365] [2020-04-18 20:05:02,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:02,805 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 20:05:02,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703162365] [2020-04-18 20:05:02,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:02,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:02,806 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:02,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:02,825 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 214 transitions. [2020-04-18 20:05:02,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:02,858 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:02,859 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 6 states. [2020-04-18 20:05:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:02,963 INFO L93 Difference]: Finished difference Result 214 states and 448 transitions. [2020-04-18 20:05:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 448 transitions. [2020-04-18 20:05:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:02,965 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:02,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:02,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1314279643, now seen corresponding path program 3 times [2020-04-18 20:05:02,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:02,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267862508] [2020-04-18 20:05:02,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:03,114 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 20:05:03,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267862508] [2020-04-18 20:05:03,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:03,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:03,115 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:03,121 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:03,136 INFO L259 McrAutomatonBuilder]: Finished intersection with 142 states and 263 transitions. [2020-04-18 20:05:03,137 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:03,409 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 30 times. [2020-04-18 20:05:03,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:03,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-04-18 20:05:03,410 INFO L87 Difference]: Start difference. First operand 214 states and 448 transitions. Second operand 15 states. [2020-04-18 20:05:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:03,886 INFO L93 Difference]: Finished difference Result 297 states and 559 transitions. [2020-04-18 20:05:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 559 transitions. [2020-04-18 20:05:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:05:03,887 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash 329489983, now seen corresponding path program 4 times [2020-04-18 20:05:03,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:03,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508026845] [2020-04-18 20:05:03,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:04,071 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 20:05:04,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508026845] [2020-04-18 20:05:04,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:04,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:04,073 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:04,076 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:04,089 INFO L259 McrAutomatonBuilder]: Finished intersection with 123 states and 226 transitions. [2020-04-18 20:05:04,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:04,182 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:04,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:04,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 20:05:04,184 INFO L87 Difference]: Start difference. First operand 297 states and 559 transitions. Second operand 6 states. [2020-04-18 20:05:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:04,240 INFO L93 Difference]: Finished difference Result 297 states and 559 transitions. [2020-04-18 20:05:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 559 transitions. [2020-04-18 20:05:04,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:04,242 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [874568402] [2020-04-18 20:05:04,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:04,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:04,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [874568402] [2020-04-18 20:05:04,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 20:05:04,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:04,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 20:05:04,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 20:05:04,245 INFO L87 Difference]: Start difference. First operand 2961 states and 9725 transitions. Second operand 20 states. [2020-04-18 20:05:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:06,387 INFO L93 Difference]: Finished difference Result 7021 states and 22370 transitions. [2020-04-18 20:05:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-04-18 20:05:06,388 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2020-04-18 20:05:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:06,408 INFO L225 Difference]: With dead ends: 7021 [2020-04-18 20:05:06,408 INFO L226 Difference]: Without dead ends: 2804 [2020-04-18 20:05:06,411 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1641, Invalid=5669, Unknown=0, NotChecked=0, Total=7310 [2020-04-18 20:05:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2020-04-18 20:05:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2420. [2020-04-18 20:05:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-04-18 20:05:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 7709 transitions. [2020-04-18 20:05:06,495 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 7709 transitions. Word has length 41 [2020-04-18 20:05:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:06,496 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 7709 transitions. [2020-04-18 20:05:06,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 20:05:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 7709 transitions. [2020-04-18 20:05:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:06,502 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:06,503 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:06,503 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1211305480, now seen corresponding path program 1 times [2020-04-18 20:05:06,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:06,504 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1804459802] [2020-04-18 20:05:06,505 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:06,510 INFO L259 McrAutomatonBuilder]: Finished intersection with 235 states and 522 transitions. [2020-04-18 20:05:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states. [2020-04-18 20:05:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:06,513 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1998542128, now seen corresponding path program 2 times [2020-04-18 20:05:06,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:06,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135162881] [2020-04-18 20:05:06,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:06,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135162881] [2020-04-18 20:05:06,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:06,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:06,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:06,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:06,620 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 225 transitions. [2020-04-18 20:05:06,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:06,655 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:06,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:06,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:06,655 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 6 states. [2020-04-18 20:05:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:06,783 INFO L93 Difference]: Finished difference Result 271 states and 594 transitions. [2020-04-18 20:05:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 594 transitions. [2020-04-18 20:05:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:06,785 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:06,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1692279434, now seen corresponding path program 3 times [2020-04-18 20:05:06,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:06,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025364398] [2020-04-18 20:05:06,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:06,863 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 20:05:06,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025364398] [2020-04-18 20:05:06,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:06,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:06,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:06,868 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:06,890 INFO L259 McrAutomatonBuilder]: Finished intersection with 175 states and 343 transitions. [2020-04-18 20:05:06,890 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:06,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 20:05:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:05:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-04-18 20:05:06,973 INFO L87 Difference]: Start difference. First operand 271 states and 594 transitions. Second operand 10 states. [2020-04-18 20:05:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:07,148 INFO L93 Difference]: Finished difference Result 396 states and 821 transitions. [2020-04-18 20:05:07,148 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 821 transitions. [2020-04-18 20:05:07,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 20:05:07,149 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:07,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:07,150 INFO L82 PathProgramCache]: Analyzing trace with hash -345747796, now seen corresponding path program 4 times [2020-04-18 20:05:07,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:07,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113652186] [2020-04-18 20:05:07,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:07,243 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 20:05:07,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113652186] [2020-04-18 20:05:07,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:07,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:07,244 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:07,247 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:07,264 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 275 transitions. [2020-04-18 20:05:07,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:07,365 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 20:05:07,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-04-18 20:05:07,366 INFO L87 Difference]: Start difference. First operand 396 states and 821 transitions. Second operand 6 states. [2020-04-18 20:05:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:07,511 INFO L93 Difference]: Finished difference Result 396 states and 821 transitions. [2020-04-18 20:05:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 821 transitions. [2020-04-18 20:05:07,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:07,513 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1804459802] [2020-04-18 20:05:07,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:07,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:07,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1804459802] [2020-04-18 20:05:07,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:05:07,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:07,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:07,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-04-18 20:05:07,517 INFO L87 Difference]: Start difference. First operand 2420 states and 7709 transitions. Second operand 15 states. [2020-04-18 20:05:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:08,237 INFO L93 Difference]: Finished difference Result 4070 states and 12511 transitions. [2020-04-18 20:05:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-04-18 20:05:08,237 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-04-18 20:05:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:08,251 INFO L225 Difference]: With dead ends: 4070 [2020-04-18 20:05:08,251 INFO L226 Difference]: Without dead ends: 2009 [2020-04-18 20:05:08,252 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=447, Invalid=1905, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 20:05:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-04-18 20:05:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1817. [2020-04-18 20:05:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2020-04-18 20:05:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 5534 transitions. [2020-04-18 20:05:08,298 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 5534 transitions. Word has length 42 [2020-04-18 20:05:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:08,298 INFO L479 AbstractCegarLoop]: Abstraction has 1817 states and 5534 transitions. [2020-04-18 20:05:08,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:05:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 5534 transitions. [2020-04-18 20:05:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:08,302 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:08,302 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 20:05:08,302 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:08,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1356091049, now seen corresponding path program 1 times [2020-04-18 20:05:08,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:08,303 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [687388996] [2020-04-18 20:05:08,305 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:08,312 INFO L259 McrAutomatonBuilder]: Finished intersection with 381 states and 908 transitions. [2020-04-18 20:05:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states. [2020-04-18 20:05:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:08,315 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:08,316 INFO L82 PathProgramCache]: Analyzing trace with hash -697482609, now seen corresponding path program 2 times [2020-04-18 20:05:08,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:08,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295354274] [2020-04-18 20:05:08,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:08,384 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 20:05:08,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295354274] [2020-04-18 20:05:08,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:08,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:08,386 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:08,389 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:08,403 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 198 transitions. [2020-04-18 20:05:08,403 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:08,438 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 20:05:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:08,439 INFO L87 Difference]: Start difference. First operand 381 states. Second operand 6 states. [2020-04-18 20:05:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:08,533 INFO L93 Difference]: Finished difference Result 441 states and 1036 transitions. [2020-04-18 20:05:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1036 transitions. [2020-04-18 20:05:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:08,535 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:08,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:08,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1003745303, now seen corresponding path program 3 times [2020-04-18 20:05:08,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:08,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859531875] [2020-04-18 20:05:08,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:08,597 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 20:05:08,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859531875] [2020-04-18 20:05:08,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:08,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:08,599 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:08,602 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:08,617 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 228 transitions. [2020-04-18 20:05:08,618 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:08,707 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 20:05:08,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 20:05:08,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-04-18 20:05:08,708 INFO L87 Difference]: Start difference. First operand 441 states and 1036 transitions. Second operand 11 states. [2020-04-18 20:05:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:08,927 INFO L93 Difference]: Finished difference Result 744 states and 1715 transitions. [2020-04-18 20:05:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1715 transitions. [2020-04-18 20:05:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:05:08,929 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:08,929 INFO L82 PathProgramCache]: Analyzing trace with hash 219010221, now seen corresponding path program 4 times [2020-04-18 20:05:08,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:08,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855080857] [2020-04-18 20:05:08,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:09,017 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 20:05:09,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855080857] [2020-04-18 20:05:09,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:09,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:09,018 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:09,022 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:09,045 INFO L259 McrAutomatonBuilder]: Finished intersection with 189 states and 372 transitions. [2020-04-18 20:05:09,045 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:09,117 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 20:05:09,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:09,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2020-04-18 20:05:09,118 INFO L87 Difference]: Start difference. First operand 744 states and 1715 transitions. Second operand 6 states. [2020-04-18 20:05:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:09,252 INFO L93 Difference]: Finished difference Result 744 states and 1715 transitions. [2020-04-18 20:05:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1715 transitions. [2020-04-18 20:05:09,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:09,254 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [687388996] [2020-04-18 20:05:09,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:09,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:09,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [687388996] [2020-04-18 20:05:09,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 20:05:09,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:09,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:05:09,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2020-04-18 20:05:09,256 INFO L87 Difference]: Start difference. First operand 1817 states and 5534 transitions. Second operand 16 states. [2020-04-18 20:05:09,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:09,855 INFO L93 Difference]: Finished difference Result 2510 states and 7532 transitions. [2020-04-18 20:05:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 20:05:09,855 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-04-18 20:05:09,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:09,867 INFO L225 Difference]: With dead ends: 2510 [2020-04-18 20:05:09,867 INFO L226 Difference]: Without dead ends: 1262 [2020-04-18 20:05:09,868 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=1749, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 20:05:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-04-18 20:05:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1128. [2020-04-18 20:05:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-04-18 20:05:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 3350 transitions. [2020-04-18 20:05:09,895 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 3350 transitions. Word has length 44 [2020-04-18 20:05:09,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:09,895 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 3350 transitions. [2020-04-18 20:05:09,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 20:05:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 3350 transitions. [2020-04-18 20:05:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:09,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:09,898 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 20:05:09,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:09,898 INFO L82 PathProgramCache]: Analyzing trace with hash 479667934, now seen corresponding path program 1 times [2020-04-18 20:05:09,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:09,899 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [981596976] [2020-04-18 20:05:09,900 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:09,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions. [2020-04-18 20:05:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states. [2020-04-18 20:05:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:09,932 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:09,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:09,933 INFO L82 PathProgramCache]: Analyzing trace with hash 791367566, now seen corresponding path program 2 times [2020-04-18 20:05:09,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:09,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023777499] [2020-04-18 20:05:09,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:10,034 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 20:05:10,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023777499] [2020-04-18 20:05:10,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:10,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:10,035 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:10,039 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:10,063 INFO L259 McrAutomatonBuilder]: Finished intersection with 168 states and 334 transitions. [2020-04-18 20:05:10,063 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:10,154 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:05:10,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:10,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:05:10,155 INFO L87 Difference]: Start difference. First operand 1063 states. Second operand 8 states. [2020-04-18 20:05:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:10,586 INFO L93 Difference]: Finished difference Result 1748 states and 4915 transitions. [2020-04-18 20:05:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 4915 transitions. [2020-04-18 20:05:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:10,590 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:10,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:10,591 INFO L82 PathProgramCache]: Analyzing trace with hash -206686002, now seen corresponding path program 3 times [2020-04-18 20:05:10,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:10,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924352791] [2020-04-18 20:05:10,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:10,669 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 20:05:10,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924352791] [2020-04-18 20:05:10,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:10,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:10,670 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:10,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:10,723 INFO L259 McrAutomatonBuilder]: Finished intersection with 322 states and 787 transitions. [2020-04-18 20:05:10,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:10,747 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:10,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:10,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:05:10,747 INFO L87 Difference]: Start difference. First operand 1748 states and 4915 transitions. Second operand 6 states. [2020-04-18 20:05:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:10,867 INFO L93 Difference]: Finished difference Result 2032 states and 5647 transitions. [2020-04-18 20:05:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5647 transitions. [2020-04-18 20:05:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 20:05:10,870 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:10,870 INFO L82 PathProgramCache]: Analyzing trace with hash 381496398, now seen corresponding path program 4 times [2020-04-18 20:05:10,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:10,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675960451] [2020-04-18 20:05:10,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:10,955 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 20:05:10,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675960451] [2020-04-18 20:05:10,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:10,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:10,956 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:10,960 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:10,981 INFO L259 McrAutomatonBuilder]: Finished intersection with 222 states and 480 transitions. [2020-04-18 20:05:10,981 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:11,161 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 20:05:11,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:11,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2020-04-18 20:05:11,162 INFO L87 Difference]: Start difference. First operand 2032 states and 5647 transitions. Second operand 8 states. [2020-04-18 20:05:11,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:11,412 INFO L93 Difference]: Finished difference Result 2032 states and 5647 transitions. [2020-04-18 20:05:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5647 transitions. [2020-04-18 20:05:11,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:11,415 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [981596976] [2020-04-18 20:05:11,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:11,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:11,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [981596976] [2020-04-18 20:05:11,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 20:05:11,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:11,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 20:05:11,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 20:05:11,417 INFO L87 Difference]: Start difference. First operand 1128 states and 3350 transitions. Second operand 15 states. [2020-04-18 20:05:12,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:12,197 INFO L93 Difference]: Finished difference Result 1268 states and 3644 transitions. [2020-04-18 20:05:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 20:05:12,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-04-18 20:05:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:12,204 INFO L225 Difference]: With dead ends: 1268 [2020-04-18 20:05:12,204 INFO L226 Difference]: Without dead ends: 872 [2020-04-18 20:05:12,205 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=456, Invalid=2850, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 20:05:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-04-18 20:05:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 789. [2020-04-18 20:05:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-04-18 20:05:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 2233 transitions. [2020-04-18 20:05:12,230 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 2233 transitions. Word has length 46 [2020-04-18 20:05:12,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:12,230 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 2233 transitions. [2020-04-18 20:05:12,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 20:05:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 2233 transitions. [2020-04-18 20:05:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:12,232 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:12,232 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:12,232 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:12,233 INFO L82 PathProgramCache]: Analyzing trace with hash -103241697, now seen corresponding path program 1 times [2020-04-18 20:05:12,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:12,233 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [638044294] [2020-04-18 20:05:12,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:12,273 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 20:05:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 20:05:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:12,292 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash 932076909, now seen corresponding path program 2 times [2020-04-18 20:05:12,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:12,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143758707] [2020-04-18 20:05:12,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:12,394 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 20:05:12,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143758707] [2020-04-18 20:05:12,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:12,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:12,395 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:12,399 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:12,422 INFO L259 McrAutomatonBuilder]: Finished intersection with 204 states and 418 transitions. [2020-04-18 20:05:12,423 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:12,487 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 20:05:12,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:12,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:05:12,487 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 8 states. [2020-04-18 20:05:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:13,069 INFO L93 Difference]: Finished difference Result 4326 states and 13428 transitions. [2020-04-18 20:05:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 13428 transitions. [2020-04-18 20:05:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:13,077 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash -65976659, now seen corresponding path program 3 times [2020-04-18 20:05:13,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:13,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854707340] [2020-04-18 20:05:13,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:13,159 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 20:05:13,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854707340] [2020-04-18 20:05:13,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:13,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:13,160 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:13,166 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:13,228 INFO L259 McrAutomatonBuilder]: Finished intersection with 260 states and 562 transitions. [2020-04-18 20:05:13,228 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:13,247 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:13,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:13,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-04-18 20:05:13,248 INFO L87 Difference]: Start difference. First operand 4326 states and 13428 transitions. Second operand 6 states. [2020-04-18 20:05:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:13,342 INFO L93 Difference]: Finished difference Result 5306 states and 16168 transitions. [2020-04-18 20:05:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 16168 transitions. [2020-04-18 20:05:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:13,349 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:13,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:13,349 INFO L82 PathProgramCache]: Analyzing trace with hash -195492887, now seen corresponding path program 4 times [2020-04-18 20:05:13,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:13,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605093492] [2020-04-18 20:05:13,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:13,430 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 20:05:13,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605093492] [2020-04-18 20:05:13,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:13,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:13,432 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:13,436 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:13,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 253 states and 556 transitions. [2020-04-18 20:05:13,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:13,551 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 20:05:13,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:13,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2020-04-18 20:05:13,553 INFO L87 Difference]: Start difference. First operand 5306 states and 16168 transitions. Second operand 8 states. [2020-04-18 20:05:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:13,781 INFO L93 Difference]: Finished difference Result 7650 states and 22350 transitions. [2020-04-18 20:05:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 22350 transitions. [2020-04-18 20:05:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:13,792 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:05:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:13,792 INFO L82 PathProgramCache]: Analyzing trace with hash 289841227, now seen corresponding path program 5 times [2020-04-18 20:05:13,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:13,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557589405] [2020-04-18 20:05:13,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:13,897 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 20:05:13,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557589405] [2020-04-18 20:05:13,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:13,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:13,898 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:13,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:13,963 INFO L259 McrAutomatonBuilder]: Finished intersection with 445 states and 1135 transitions. [2020-04-18 20:05:13,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:14,120 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 20:05:14,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 20:05:14,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 20:05:14,122 INFO L87 Difference]: Start difference. First operand 7650 states and 22350 transitions. Second operand 11 states. [2020-04-18 20:05:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:14,661 INFO L93 Difference]: Finished difference Result 8694 states and 25270 transitions. [2020-04-18 20:05:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 25270 transitions. [2020-04-18 20:05:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:14,673 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 20:05:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -245301795, now seen corresponding path program 6 times [2020-04-18 20:05:14,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:14,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533181410] [2020-04-18 20:05:14,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:14,790 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 20:05:14,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533181410] [2020-04-18 20:05:14,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:14,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:14,791 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:14,795 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:14,866 INFO L259 McrAutomatonBuilder]: Finished intersection with 458 states and 1154 transitions. [2020-04-18 20:05:14,866 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:15,012 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times. [2020-04-18 20:05:15,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 20:05:15,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=2102, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 20:05:15,013 INFO L87 Difference]: Start difference. First operand 8694 states and 25270 transitions. Second operand 10 states. [2020-04-18 20:05:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:15,276 INFO L93 Difference]: Finished difference Result 10658 states and 30842 transitions. [2020-04-18 20:05:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 30842 transitions. [2020-04-18 20:05:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:05:15,290 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 20:05:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1945469681, now seen corresponding path program 7 times [2020-04-18 20:05:15,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:15,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470772920] [2020-04-18 20:05:15,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:15,370 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 20:05:15,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470772920] [2020-04-18 20:05:15,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:15,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:15,371 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:15,375 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:15,410 INFO L259 McrAutomatonBuilder]: Finished intersection with 240 states and 519 transitions. [2020-04-18 20:05:15,411 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:15,619 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 20:05:15,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:05:15,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=3120, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 20:05:15,621 INFO L87 Difference]: Start difference. First operand 10658 states and 30842 transitions. Second operand 8 states. [2020-04-18 20:05:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:16,064 INFO L93 Difference]: Finished difference Result 10786 states and 30962 transitions. [2020-04-18 20:05:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand 10786 states and 30962 transitions. [2020-04-18 20:05:16,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:16,084 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [638044294] [2020-04-18 20:05:16,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:16,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:16,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [638044294] [2020-04-18 20:05:16,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-04-18 20:05:16,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:16,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-04-18 20:05:16,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=4154, Unknown=0, NotChecked=0, Total=4830 [2020-04-18 20:05:16,088 INFO L87 Difference]: Start difference. First operand 789 states and 2233 transitions. Second operand 28 states. [2020-04-18 20:05:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:17,890 INFO L93 Difference]: Finished difference Result 1442 states and 4075 transitions. [2020-04-18 20:05:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-04-18 20:05:17,890 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 48 [2020-04-18 20:05:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:17,890 INFO L225 Difference]: With dead ends: 1442 [2020-04-18 20:05:17,890 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:05:17,893 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 413 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4117 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1674, Invalid=10316, Unknown=0, NotChecked=0, Total=11990 [2020-04-18 20:05:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:05:17,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:05:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:05:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:05:17,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 20:05:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:17,894 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:05:17,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-04-18 20:05:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:05:17,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:17,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:05:17 BasicIcfg [2020-04-18 20:05:17,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:05:17,902 INFO L168 Benchmark]: Toolchain (without parser) took 19714.78 ms. Allocated memory was 138.9 MB in the beginning and 694.2 MB in the end (delta: 555.2 MB). Free memory was 101.4 MB in the beginning and 494.1 MB in the end (delta: -392.7 MB). Peak memory consumption was 162.5 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,902 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.85 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 99.6 MB in the beginning and 161.4 MB in the end (delta: -61.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.47 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,904 INFO L168 Benchmark]: Boogie Preprocessor took 24.50 ms. Allocated memory is still 205.0 MB. Free memory was 159.4 MB in the beginning and 158.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,905 INFO L168 Benchmark]: RCFGBuilder took 474.37 ms. Allocated memory is still 205.0 MB. Free memory was 158.0 MB in the beginning and 135.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,905 INFO L168 Benchmark]: TraceAbstraction took 18480.04 ms. Allocated memory was 205.0 MB in the beginning and 694.2 MB in the end (delta: 489.2 MB). Free memory was 135.6 MB in the beginning and 494.1 MB in the end (delta: -358.5 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:17,908 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.85 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 99.6 MB in the beginning and 161.4 MB in the end (delta: -61.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.47 ms. Allocated memory is still 205.0 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.50 ms. Allocated memory is still 205.0 MB. Free memory was 159.4 MB in the beginning and 158.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.37 ms. Allocated memory is still 205.0 MB. Free memory was 158.0 MB in the beginning and 135.6 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18480.04 ms. Allocated memory was 205.0 MB in the beginning and 694.2 MB in the end (delta: 489.2 MB). Free memory was 135.6 MB in the beginning and 494.1 MB in the end (delta: -358.5 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 857 SDtfs, 2466 SDslu, 6024 SDs, 0 SdLazy, 1864 SolverSat, 327 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1580 GetRequests, 1217 SyntacticMatches, 5 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8890 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 2204 StatesRemovedByMinimization, 6 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...