/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:17:44,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:17:44,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:17:44,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:17:44,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:17:44,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:17:44,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:17:44,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:17:44,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:17:44,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:17:44,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:17:44,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:17:44,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:17:44,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:17:44,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:17:44,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:17:44,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:17:44,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:17:44,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:17:44,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:17:44,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:17:44,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:17:44,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:17:44,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:17:44,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:17:44,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:17:44,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:17:44,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:17:44,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:17:44,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:17:44,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:17:44,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:17:44,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:17:44,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:17:44,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:17:44,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:17:44,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:17:44,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:17:44,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:17:44,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:17:44,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:17:44,874 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-VariableLbe-McrStrategy.epf [2020-04-18 15:17:44,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:17:44,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:17:44,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:17:44,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:17:44,897 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:17:44,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:17:44,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:17:44,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:17:44,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:17:44,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:17:44,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:17:44,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:17:44,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:17:44,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:17:44,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:17:44,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:17:44,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:17:44,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:17:44,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:17:44,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:17:44,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:17:44,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:17:44,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:17:44,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:17:44,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:17:44,902 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:17:44,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:17:44,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:17:44,903 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:17:44,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:17:44,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:17:45,154 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:17:45,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:17:45,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:17:45,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:17:45,177 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:17:45,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-18 15:17:45,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b1971b2/aac22ea61b9644a08da4f942f2dfd1d8/FLAGb41cab8c8 [2020-04-18 15:17:45,767 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:17:45,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-04-18 15:17:45,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b1971b2/aac22ea61b9644a08da4f942f2dfd1d8/FLAGb41cab8c8 [2020-04-18 15:17:46,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b1971b2/aac22ea61b9644a08da4f942f2dfd1d8 [2020-04-18 15:17:46,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:17:46,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:17:46,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:17:46,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:17:46,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:17:46,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46, skipping insertion in model container [2020-04-18 15:17:46,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:17:46,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:17:46,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:17:46,760 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:17:46,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:17:46,894 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:17:46,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46 WrapperNode [2020-04-18 15:17:46,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:17:46,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:17:46,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:17:46,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:17:46,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:17:46,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:17:46,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:17:46,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:17:46,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (1/1) ... [2020-04-18 15:17:46,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:17:46,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:17:46,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:17:46,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:17:46,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (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 15:17:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:17:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:17:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:17:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:17:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:17:47,028 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:17:47,028 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:17:47,028 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:17:47,028 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:17:47,028 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:17:47,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:17:47,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:17:47,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:17:47,030 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 15:17:47,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:17:47,396 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:17:47,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:17:47 BoogieIcfgContainer [2020-04-18 15:17:47,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:17:47,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:17:47,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:17:47,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:17:47,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:17:46" (1/3) ... [2020-04-18 15:17:47,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ef12de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:17:47, skipping insertion in model container [2020-04-18 15:17:47,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:17:46" (2/3) ... [2020-04-18 15:17:47,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ef12de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:17:47, skipping insertion in model container [2020-04-18 15:17:47,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:17:47" (3/3) ... [2020-04-18 15:17:47,410 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-04-18 15:17:47,420 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:17:47,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:17:47,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:17:47,427 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:17:47,456 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,456 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,456 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,457 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,458 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,458 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,458 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,459 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,459 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,459 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,459 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,460 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,460 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,460 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,461 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,461 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,461 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,462 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,466 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,466 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,466 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,467 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,473 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,473 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,473 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,474 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,477 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,477 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,477 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,477 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:17:47,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:17:47,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:17:47,522 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:17:47,522 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:17:47,523 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:17:47,523 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:17:47,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:17:47,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:17:47,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:17:47,539 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-04-18 15:17:47,541 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 15:17:47,579 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-18 15:17:47,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:17:47,584 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:17:47,587 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 15:17:47,611 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-18 15:17:47,611 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:17:47,612 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:17:47,614 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 15:17:47,616 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:17:49,046 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-04-18 15:17:49,047 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-18 15:17:49,050 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 15:17:49,070 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 15:17:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 15:17:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:17:49,080 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:17:49,081 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:17:49,081 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:17:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-04-18 15:17:49,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:17:49,094 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1038029270] [2020-04-18 15:17:49,110 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,122 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:17:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:17:49,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:17:49,124 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:17:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,125 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 2 times [2020-04-18 15:17:49,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:49,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656296719] [2020-04-18 15:17:49,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:49,410 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 15:17:49,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656296719] [2020-04-18 15:17:49,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:49,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:17:49,414 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:49,416 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,423 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:17:49,423 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:49,430 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:49,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:49,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:49,438 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:17:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:49,442 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:17:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:17:49,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:49,443 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1038029270] [2020-04-18 15:17:49,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:17:49,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:17:49,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1038029270] [2020-04-18 15:17:49,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:17:49,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:17:49,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:49,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:49,452 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 15:17:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:49,488 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-04-18 15:17:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:17:49,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:17:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:17:49,523 INFO L225 Difference]: With dead ends: 220 [2020-04-18 15:17:49,524 INFO L226 Difference]: Without dead ends: 172 [2020-04-18 15:17:49,527 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-18 15:17:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-18 15:17:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-18 15:17:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-04-18 15:17:49,588 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-04-18 15:17:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:17:49,589 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-04-18 15:17:49,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:17:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-04-18 15:17:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:17:49,591 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:17:49,591 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:17:49,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:17:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,592 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-04-18 15:17:49,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:17:49,592 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [877507394] [2020-04-18 15:17:49,593 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,593 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 15:17:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 15:17:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:17:49,594 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:17:49,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,595 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 2 times [2020-04-18 15:17:49,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:49,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688146442] [2020-04-18 15:17:49,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:49,690 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 15:17:49,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688146442] [2020-04-18 15:17:49,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:49,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:17:49,691 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:49,692 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,698 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 15:17:49,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:49,703 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:49,704 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 15:17:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:49,705 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 15:17:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 15:17:49,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:49,706 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [877507394] [2020-04-18 15:17:49,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:17:49,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:17:49,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [877507394] [2020-04-18 15:17:49,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:17:49,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:17:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:49,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:49,708 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-04-18 15:17:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:49,719 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-04-18 15:17:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:17:49,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 15:17:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:17:49,722 INFO L225 Difference]: With dead ends: 166 [2020-04-18 15:17:49,722 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 15:17:49,723 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:49,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 15:17:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 15:17:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 15:17:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-04-18 15:17:49,742 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-04-18 15:17:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:17:49,742 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-04-18 15:17:49,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:17:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-04-18 15:17:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:17:49,744 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:17:49,744 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:17:49,744 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:17:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,745 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-04-18 15:17:49,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:17:49,745 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [869501760] [2020-04-18 15:17:49,746 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 44 transitions. [2020-04-18 15:17:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:17:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:17:49,748 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:17:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash -650604177, now seen corresponding path program 2 times [2020-04-18 15:17:49,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:49,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130723649] [2020-04-18 15:17:49,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:49,802 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 15:17:49,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130723649] [2020-04-18 15:17:49,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:49,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:49,803 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:49,804 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,806 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 15:17:49,806 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:49,809 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:49,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:49,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:49,809 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-04-18 15:17:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:49,814 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2020-04-18 15:17:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2020-04-18 15:17:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:17:49,815 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:17:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,815 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 3 times [2020-04-18 15:17:49,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:49,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151951331] [2020-04-18 15:17:49,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:17:49,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151951331] [2020-04-18 15:17:49,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:49,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:17:49,893 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:49,894 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,899 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 37 transitions. [2020-04-18 15:17:49,899 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:49,905 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:49,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:49,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:49,910 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand 3 states. [2020-04-18 15:17:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:49,910 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2020-04-18 15:17:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2020-04-18 15:17:49,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:49,911 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [869501760] [2020-04-18 15:17:49,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:17:49,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:17:49,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [869501760] [2020-04-18 15:17:49,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:17:49,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:17:49,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:49,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:49,913 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 4 states. [2020-04-18 15:17:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:49,943 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-04-18 15:17:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:17:49,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:17:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:17:49,945 INFO L225 Difference]: With dead ends: 218 [2020-04-18 15:17:49,945 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 15:17:49,946 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:17:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 15:17:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 15:17:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 15:17:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-04-18 15:17:49,959 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 10 [2020-04-18 15:17:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:17:49,959 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-04-18 15:17:49,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:17:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-04-18 15:17:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:17:49,960 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:17:49,961 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:17:49,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:17:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 1 times [2020-04-18 15:17:49,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:17:49,962 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [774126399] [2020-04-18 15:17:49,962 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:49,963 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 76 transitions. [2020-04-18 15:17:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:17:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:17:49,965 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:17:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1305381531, now seen corresponding path program 2 times [2020-04-18 15:17:49,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:49,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190452058] [2020-04-18 15:17:49,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:50,000 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 15:17:50,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190452058] [2020-04-18 15:17:50,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:50,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:50,001 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:50,002 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,004 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 15:17:50,004 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:50,007 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:50,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:50,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:50,008 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-04-18 15:17:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,014 INFO L93 Difference]: Finished difference Result 42 states and 80 transitions. [2020-04-18 15:17:50,014 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 80 transitions. [2020-04-18 15:17:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:17:50,014 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:17:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 3 times [2020-04-18 15:17:50,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:50,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933643278] [2020-04-18 15:17:50,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:50,056 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 15:17:50,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933643278] [2020-04-18 15:17:50,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:50,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:50,057 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:50,058 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,061 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 35 transitions. [2020-04-18 15:17:50,061 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:50,068 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:17:50,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:50,068 INFO L87 Difference]: Start difference. First operand 42 states and 80 transitions. Second operand 4 states. [2020-04-18 15:17:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,085 INFO L93 Difference]: Finished difference Result 48 states and 87 transitions. [2020-04-18 15:17:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 87 transitions. [2020-04-18 15:17:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:17:50,085 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:17:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 4 times [2020-04-18 15:17:50,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:50,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195568714] [2020-04-18 15:17:50,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:50,148 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 15:17:50,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195568714] [2020-04-18 15:17:50,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:50,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:50,149 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:50,150 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,153 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-04-18 15:17:50,153 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:50,175 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:17:50,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:50,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:17:50,176 INFO L87 Difference]: Start difference. First operand 48 states and 87 transitions. Second operand 4 states. [2020-04-18 15:17:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,187 INFO L93 Difference]: Finished difference Result 48 states and 87 transitions. [2020-04-18 15:17:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 87 transitions. [2020-04-18 15:17:50,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:50,188 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [774126399] [2020-04-18 15:17:50,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:17:50,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:17:50,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [774126399] [2020-04-18 15:17:50,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:17:50,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:17:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:17:50,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:17:50,190 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 6 states. [2020-04-18 15:17:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,326 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-04-18 15:17:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:17:50,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:17:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:17:50,328 INFO L225 Difference]: With dead ends: 167 [2020-04-18 15:17:50,328 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 15:17:50,329 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:17:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 15:17:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 15:17:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 15:17:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-04-18 15:17:50,338 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-04-18 15:17:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:17:50,338 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-04-18 15:17:50,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:17:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-04-18 15:17:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:17:50,339 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:17:50,339 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:17:50,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:17:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-04-18 15:17:50,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:17:50,340 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [266521655] [2020-04-18 15:17:50,341 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,342 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 15:17:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 15:17:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:17:50,343 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:17:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1812121990, now seen corresponding path program 2 times [2020-04-18 15:17:50,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:50,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088601879] [2020-04-18 15:17:50,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:50,371 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 15:17:50,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088601879] [2020-04-18 15:17:50,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:50,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:50,372 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:50,373 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 15:17:50,376 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:50,380 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:50,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:50,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:50,381 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 15:17:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,386 INFO L93 Difference]: Finished difference Result 62 states and 130 transitions. [2020-04-18 15:17:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 130 transitions. [2020-04-18 15:17:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:17:50,387 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:17:50,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1812095320, now seen corresponding path program 3 times [2020-04-18 15:17:50,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:50,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505474697] [2020-04-18 15:17:50,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:50,418 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 15:17:50,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505474697] [2020-04-18 15:17:50,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:50,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:50,419 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:50,421 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,424 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 40 transitions. [2020-04-18 15:17:50,424 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:50,432 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:17:50,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:50,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:50,432 INFO L87 Difference]: Start difference. First operand 62 states and 130 transitions. Second operand 4 states. [2020-04-18 15:17:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,446 INFO L93 Difference]: Finished difference Result 74 states and 150 transitions. [2020-04-18 15:17:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 150 transitions. [2020-04-18 15:17:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:17:50,447 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:17:50,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1833789430, now seen corresponding path program 4 times [2020-04-18 15:17:50,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:50,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505931922] [2020-04-18 15:17:50,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:50,498 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 15:17:50,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505931922] [2020-04-18 15:17:50,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:50,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:50,499 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:50,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 55 transitions. [2020-04-18 15:17:50,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:50,566 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:17:50,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:50,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:17:50,567 INFO L87 Difference]: Start difference. First operand 74 states and 150 transitions. Second operand 4 states. [2020-04-18 15:17:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,614 INFO L93 Difference]: Finished difference Result 86 states and 166 transitions. [2020-04-18 15:17:50,614 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 166 transitions. [2020-04-18 15:17:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:17:50,614 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:17:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 5 times [2020-04-18 15:17:50,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:50,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965857504] [2020-04-18 15:17:50,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:50,712 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 15:17:50,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965857504] [2020-04-18 15:17:50,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:50,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:17:50,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:50,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,718 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 58 transitions. [2020-04-18 15:17:50,718 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:50,812 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:17:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:17:50,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:17:50,813 INFO L87 Difference]: Start difference. First operand 86 states and 166 transitions. Second operand 6 states. [2020-04-18 15:17:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,841 INFO L93 Difference]: Finished difference Result 86 states and 166 transitions. [2020-04-18 15:17:50,841 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 166 transitions. [2020-04-18 15:17:50,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:50,843 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [266521655] [2020-04-18 15:17:50,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:17:50,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:17:50,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [266521655] [2020-04-18 15:17:50,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:17:50,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:17:50,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:17:50,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:17:50,845 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 8 states. [2020-04-18 15:17:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:50,970 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-18 15:17:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 15:17:50,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 15:17:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:17:50,971 INFO L225 Difference]: With dead ends: 121 [2020-04-18 15:17:50,971 INFO L226 Difference]: Without dead ends: 93 [2020-04-18 15:17:50,972 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:17:50,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-18 15:17:50,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-18 15:17:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-18 15:17:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-18 15:17:50,986 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-04-18 15:17:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:17:50,987 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-18 15:17:50,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:17:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-18 15:17:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:17:50,990 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:17:50,990 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:17:50,990 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:17:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,990 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-04-18 15:17:50,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:17:50,993 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1573428758] [2020-04-18 15:17:50,994 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:50,995 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions. [2020-04-18 15:17:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 15:17:50,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:17:50,997 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:17:50,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:50,997 INFO L82 PathProgramCache]: Analyzing trace with hash 954730171, now seen corresponding path program 2 times [2020-04-18 15:17:50,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:50,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-18 15:17:50,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,038 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 15:17:51,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976489676] [2020-04-18 15:17:51,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:51,039 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,040 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,042 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 17 transitions. [2020-04-18 15:17:51,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,046 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:51,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:51,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:51,047 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-04-18 15:17:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,051 INFO L93 Difference]: Finished difference Result 52 states and 96 transitions. [2020-04-18 15:17:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2020-04-18 15:17:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:17:51,052 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:17:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1894446331, now seen corresponding path program 3 times [2020-04-18 15:17:51,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709528264] [2020-04-18 15:17:51,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,082 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 15:17:51,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709528264] [2020-04-18 15:17:51,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:51,083 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,085 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,087 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-04-18 15:17:51,087 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,094 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:51,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:51,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:51,094 INFO L87 Difference]: Start difference. First operand 52 states and 96 transitions. Second operand 3 states. [2020-04-18 15:17:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,097 INFO L93 Difference]: Finished difference Result 52 states and 96 transitions. [2020-04-18 15:17:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 96 transitions. [2020-04-18 15:17:51,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:51,098 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1573428758] [2020-04-18 15:17:51,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:17:51,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:17:51,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1573428758] [2020-04-18 15:17:51,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:17:51,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:17:51,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:51,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:51,099 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 4 states. [2020-04-18 15:17:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,112 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-04-18 15:17:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:17:51,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 15:17:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:17:51,113 INFO L225 Difference]: With dead ends: 110 [2020-04-18 15:17:51,114 INFO L226 Difference]: Without dead ends: 88 [2020-04-18 15:17:51,114 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-04-18 15:17:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-04-18 15:17:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-18 15:17:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-04-18 15:17:51,126 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-04-18 15:17:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:17:51,126 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-04-18 15:17:51,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:17:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-04-18 15:17:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,127 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:17:51,127 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:17:51,131 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:17:51,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,131 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-04-18 15:17:51,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:17:51,132 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1000425264] [2020-04-18 15:17:51,132 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,137 INFO L259 McrAutomatonBuilder]: Finished intersection with 106 states and 260 transitions. [2020-04-18 15:17:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-04-18 15:17:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,139 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:17:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482116, now seen corresponding path program 2 times [2020-04-18 15:17:51,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512052388] [2020-04-18 15:17:51,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,171 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 15:17:51,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512052388] [2020-04-18 15:17:51,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:51,172 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,173 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,179 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-04-18 15:17:51,179 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,186 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:17:51,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:51,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:17:51,187 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-04-18 15:17:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,196 INFO L93 Difference]: Finished difference Result 126 states and 296 transitions. [2020-04-18 15:17:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 296 transitions. [2020-04-18 15:17:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,197 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:17:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1961852246, now seen corresponding path program 3 times [2020-04-18 15:17:51,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478496515] [2020-04-18 15:17:51,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,252 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 15:17:51,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478496515] [2020-04-18 15:17:51,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:17:51,253 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,257 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-04-18 15:17:51,257 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,263 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:17:51,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:17:51,266 INFO L87 Difference]: Start difference. First operand 126 states and 296 transitions. Second operand 4 states. [2020-04-18 15:17:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,282 INFO L93 Difference]: Finished difference Result 156 states and 355 transitions. [2020-04-18 15:17:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 355 transitions. [2020-04-18 15:17:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,283 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:17:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1335055476, now seen corresponding path program 4 times [2020-04-18 15:17:51,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550839091] [2020-04-18 15:17:51,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,319 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 15:17:51,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550839091] [2020-04-18 15:17:51,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:17:51,320 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,321 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,325 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 89 transitions. [2020-04-18 15:17:51,326 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,342 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:17:51,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:17:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:17:51,343 INFO L87 Difference]: Start difference. First operand 156 states and 355 transitions. Second operand 4 states. [2020-04-18 15:17:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,365 INFO L93 Difference]: Finished difference Result 192 states and 415 transitions. [2020-04-18 15:17:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 415 transitions. [2020-04-18 15:17:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,366 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:17:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash 207164694, now seen corresponding path program 5 times [2020-04-18 15:17:51,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237163230] [2020-04-18 15:17:51,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,405 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 15:17:51,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237163230] [2020-04-18 15:17:51,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:17:51,406 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,407 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,411 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 90 transitions. [2020-04-18 15:17:51,412 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,463 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:17:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:17:51,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:17:51,465 INFO L87 Difference]: Start difference. First operand 192 states and 415 transitions. Second operand 6 states. [2020-04-18 15:17:51,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,509 INFO L93 Difference]: Finished difference Result 198 states and 420 transitions. [2020-04-18 15:17:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 420 transitions. [2020-04-18 15:17:51,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,510 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:17:51,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,510 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 6 times [2020-04-18 15:17:51,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342135026] [2020-04-18 15:17:51,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,560 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 15:17:51,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342135026] [2020-04-18 15:17:51,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:17:51,561 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,562 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,568 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 64 transitions. [2020-04-18 15:17:51,568 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,584 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:17:51,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:17:51,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:17:51,585 INFO L87 Difference]: Start difference. First operand 198 states and 420 transitions. Second operand 3 states. [2020-04-18 15:17:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,594 INFO L93 Difference]: Finished difference Result 292 states and 573 transitions. [2020-04-18 15:17:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 573 transitions. [2020-04-18 15:17:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,596 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:17:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,596 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 7 times [2020-04-18 15:17:51,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077913461] [2020-04-18 15:17:51,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,648 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 15:17:51,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077913461] [2020-04-18 15:17:51,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:17:51,649 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,652 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,656 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 15:17:51,656 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,750 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:17:51,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:17:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:17:51,751 INFO L87 Difference]: Start difference. First operand 292 states and 573 transitions. Second operand 6 states. [2020-04-18 15:17:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:51,792 INFO L93 Difference]: Finished difference Result 340 states and 639 transitions. [2020-04-18 15:17:51,793 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 639 transitions. [2020-04-18 15:17:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:17:51,794 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:17:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:17:51,794 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 8 times [2020-04-18 15:17:51,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:17:51,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707157624] [2020-04-18 15:17:51,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:17:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:17:51,865 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 15:17:51,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707157624] [2020-04-18 15:17:51,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:17:51,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:17:51,866 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:17:51,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:17:51,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 82 transitions. [2020-04-18 15:17:51,871 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:17:51,949 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:17:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:17:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:17:51,951 INFO L87 Difference]: Start difference. First operand 340 states and 639 transitions. Second operand 8 states. [2020-04-18 15:17:52,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:52,023 INFO L93 Difference]: Finished difference Result 340 states and 639 transitions. [2020-04-18 15:17:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 639 transitions. [2020-04-18 15:17:52,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:52,026 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1000425264] [2020-04-18 15:17:52,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:17:52,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:17:52,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1000425264] [2020-04-18 15:17:52,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:17:52,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:17:52,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:17:52,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:17:52,029 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 14 states. [2020-04-18 15:17:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:17:52,547 INFO L93 Difference]: Finished difference Result 109 states and 199 transitions. [2020-04-18 15:17:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 15:17:52,547 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2020-04-18 15:17:52,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:17:52,548 INFO L225 Difference]: With dead ends: 109 [2020-04-18 15:17:52,548 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:17:52,549 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 15:17:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:17:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:17:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:17:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:17:52,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 15:17:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:17:52,550 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:17:52,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:17:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:17:52,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:17:52,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:17:52 BasicIcfg [2020-04-18 15:17:52,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:17:52,557 INFO L168 Benchmark]: Toolchain (without parser) took 6412.82 ms. Allocated memory was 140.5 MB in the beginning and 277.3 MB in the end (delta: 136.8 MB). Free memory was 102.8 MB in the beginning and 217.8 MB in the end (delta: -115.1 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 15:17:52,557 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:17:52,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.35 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 159.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:17:52,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.20 ms. Allocated memory is still 205.0 MB. Free memory was 159.7 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:17:52,559 INFO L168 Benchmark]: Boogie Preprocessor took 23.64 ms. Allocated memory is still 205.0 MB. Free memory was 157.7 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:17:52,560 INFO L168 Benchmark]: RCFGBuilder took 428.49 ms. Allocated memory is still 205.0 MB. Free memory was 156.4 MB in the beginning and 134.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:17:52,560 INFO L168 Benchmark]: TraceAbstraction took 5153.10 ms. Allocated memory was 205.0 MB in the beginning and 277.3 MB in the end (delta: 72.4 MB). Free memory was 134.2 MB in the beginning and 217.8 MB in the end (delta: -83.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:17:52,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.35 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 159.7 MB in the end (delta: -58.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.20 ms. Allocated memory is still 205.0 MB. Free memory was 159.7 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.64 ms. Allocated memory is still 205.0 MB. Free memory was 157.7 MB in the beginning and 156.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.49 ms. Allocated memory is still 205.0 MB. Free memory was 156.4 MB in the beginning and 134.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5153.10 ms. Allocated memory was 205.0 MB in the beginning and 277.3 MB in the end (delta: 72.4 MB). Free memory was 134.2 MB in the beginning and 217.8 MB in the end (delta: -83.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 576 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 121 SDtfs, 208 SDslu, 269 SDs, 0 SdLazy, 288 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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...