/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:38:06,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:38:06,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:38:06,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:38:06,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:38:06,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:38:06,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:38:06,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:38:06,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:38:06,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:38:06,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:38:06,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:38:06,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:38:06,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:38:06,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:38:06,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:38:06,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:38:06,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:38:06,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:38:06,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:38:06,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:38:06,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:38:06,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:38:06,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:38:06,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:38:06,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:38:06,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:38:06,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:38:06,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:38:06,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:38:06,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:38:06,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:38:06,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:38:06,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:38:06,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:38:06,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:38:06,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:38:06,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:38:06,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:38:06,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:38:06,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:38:06,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:38:07,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:38:07,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:38:07,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:38:07,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:38:07,016 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:38:07,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:38:07,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:38:07,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:38:07,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:38:07,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:38:07,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:38:07,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:38:07,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:38:07,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:38:07,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:38:07,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:38:07,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:38:07,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:38:07,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:38:07,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:38:07,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:38:07,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:38:07,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:38:07,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:38:07,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:38:07,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:38:07,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:38:07,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:38:07,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:38:07,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:38:07,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:38:07,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:38:07,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:38:07,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:38:07,405 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:38:07,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:38:07,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12d2630d/1819035245e9428694afaa852b6ba02d/FLAG16f70d164 [2020-10-27 05:38:08,103 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:38:08,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:38:08,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12d2630d/1819035245e9428694afaa852b6ba02d/FLAG16f70d164 [2020-10-27 05:38:08,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12d2630d/1819035245e9428694afaa852b6ba02d [2020-10-27 05:38:08,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:38:08,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:38:08,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:38:08,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:38:08,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:38:08,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57907db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08, skipping insertion in model container [2020-10-27 05:38:08,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:38:08,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:38:08,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:38:08,798 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:38:08,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:38:08,875 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:38:08,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08 WrapperNode [2020-10-27 05:38:08,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:38:08,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:38:08,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:38:08,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:38:08,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... [2020-10-27 05:38:08,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:38:08,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:38:08,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:38:08,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:38:08,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-27 05:38:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:38:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:38:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:38:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:38:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:38:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:38:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:38:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:38:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:38:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:38:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:38:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:38:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:38:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:38:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:38:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:38:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:38:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:38:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:38:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:38:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:38:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:38:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:38:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:38:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:38:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:38:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:38:09,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:38:09,851 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:38:09,851 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:38:09,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:38:09 BoogieIcfgContainer [2020-10-27 05:38:09,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:38:09,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:38:09,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:38:09,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:38:09,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:38:08" (1/3) ... [2020-10-27 05:38:09,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a7ed5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:38:09, skipping insertion in model container [2020-10-27 05:38:09,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:08" (2/3) ... [2020-10-27 05:38:09,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a7ed5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:38:09, skipping insertion in model container [2020-10-27 05:38:09,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:38:09" (3/3) ... [2020-10-27 05:38:09,861 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:38:09,870 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:38:09,874 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:38:09,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:38:09,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:38:09,911 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:38:09,911 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:38:09,912 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:38:09,912 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:38:09,912 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:38:09,912 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:38:09,912 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:38:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-10-27 05:38:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 05:38:09,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:09,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:09,940 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:09,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:09,946 INFO L82 PathProgramCache]: Analyzing trace with hash -734565587, now seen corresponding path program 1 times [2020-10-27 05:38:09,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:09,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329787599] [2020-10-27 05:38:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:10,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:11,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 05:38:11,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:38:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-27 05:38:11,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:38:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 05:38:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 05:38:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:38:12,146 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:12,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:12,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:12,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:12,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:38:12,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:12,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:12,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:12,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329787599] [2020-10-27 05:38:12,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:12,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:38:12,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407810864] [2020-10-27 05:38:12,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:38:12,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:12,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:38:12,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:38:12,219 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 6 states. [2020-10-27 05:38:12,493 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 05:38:13,180 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 05:38:13,363 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:38:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:13,395 INFO L93 Difference]: Finished difference Result 372 states and 579 transitions. [2020-10-27 05:38:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:38:13,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-27 05:38:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:13,411 INFO L225 Difference]: With dead ends: 372 [2020-10-27 05:38:13,411 INFO L226 Difference]: Without dead ends: 284 [2020-10-27 05:38:13,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:38:13,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-27 05:38:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 151. [2020-10-27 05:38:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 05:38:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 224 transitions. [2020-10-27 05:38:13,486 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 224 transitions. Word has length 43 [2020-10-27 05:38:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:13,490 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 224 transitions. [2020-10-27 05:38:13,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:38:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 224 transitions. [2020-10-27 05:38:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 05:38:13,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:13,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:13,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:38:13,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:13,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1871397161, now seen corresponding path program 1 times [2020-10-27 05:38:13,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:13,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609989728] [2020-10-27 05:38:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:14,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:14,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 05:38:14,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:38:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-27 05:38:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:14,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 05:38:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 05:38:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:14,227 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:14,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:14,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:14,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:38:14,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:14,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609989728] [2020-10-27 05:38:14,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:14,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:38:14,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854320612] [2020-10-27 05:38:14,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:38:14,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:14,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:38:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:38:14,263 INFO L87 Difference]: Start difference. First operand 151 states and 224 transitions. Second operand 4 states. [2020-10-27 05:38:14,560 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:38:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:15,131 INFO L93 Difference]: Finished difference Result 373 states and 572 transitions. [2020-10-27 05:38:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:38:15,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-27 05:38:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:15,141 INFO L225 Difference]: With dead ends: 373 [2020-10-27 05:38:15,141 INFO L226 Difference]: Without dead ends: 246 [2020-10-27 05:38:15,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:38:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-27 05:38:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2020-10-27 05:38:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-27 05:38:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 368 transitions. [2020-10-27 05:38:15,178 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 368 transitions. Word has length 44 [2020-10-27 05:38:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:15,178 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 368 transitions. [2020-10-27 05:38:15,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:38:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 368 transitions. [2020-10-27 05:38:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 05:38:15,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:15,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:15,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:38:15,181 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:15,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:15,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2095840313, now seen corresponding path program 1 times [2020-10-27 05:38:15,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:15,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027006459] [2020-10-27 05:38:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:15,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:15,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 05:38:15,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:38:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 05:38:15,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 05:38:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 05:38:15,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:15,672 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:15,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:15,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:15,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:38:15,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:38:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:15,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027006459] [2020-10-27 05:38:15,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:15,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:38:15,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640277932] [2020-10-27 05:38:15,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:38:15,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:15,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:38:15,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:38:15,730 INFO L87 Difference]: Start difference. First operand 243 states and 368 transitions. Second operand 4 states. [2020-10-27 05:38:15,906 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:38:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:16,308 INFO L93 Difference]: Finished difference Result 617 states and 952 transitions. [2020-10-27 05:38:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:38:16,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-27 05:38:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:16,313 INFO L225 Difference]: With dead ends: 617 [2020-10-27 05:38:16,313 INFO L226 Difference]: Without dead ends: 398 [2020-10-27 05:38:16,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:38:16,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-27 05:38:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 395. [2020-10-27 05:38:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-27 05:38:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 602 transitions. [2020-10-27 05:38:16,356 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 602 transitions. Word has length 45 [2020-10-27 05:38:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:16,356 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 602 transitions. [2020-10-27 05:38:16,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:38:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 602 transitions. [2020-10-27 05:38:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 05:38:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:16,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:16,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:38:16,359 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1127369728, now seen corresponding path program 1 times [2020-10-27 05:38:16,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:16,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347095929] [2020-10-27 05:38:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:16,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:16,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 05:38:16,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:38:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-27 05:38:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:38:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:38:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 05:38:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 05:38:17,202 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:17,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:17,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:17,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:17,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:17,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:38:17,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:17,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:17,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:17,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:17,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:17,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347095929] [2020-10-27 05:38:17,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:17,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:38:17,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395837463] [2020-10-27 05:38:17,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:38:17,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:17,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:38:17,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:38:17,240 INFO L87 Difference]: Start difference. First operand 395 states and 602 transitions. Second operand 6 states. [2020-10-27 05:38:17,780 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 05:38:17,962 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 05:38:18,137 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 05:38:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:18,524 INFO L93 Difference]: Finished difference Result 1356 states and 2088 transitions. [2020-10-27 05:38:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:38:18,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-27 05:38:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:18,531 INFO L225 Difference]: With dead ends: 1356 [2020-10-27 05:38:18,531 INFO L226 Difference]: Without dead ends: 985 [2020-10-27 05:38:18,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:38:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-10-27 05:38:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 979. [2020-10-27 05:38:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-10-27 05:38:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1498 transitions. [2020-10-27 05:38:18,613 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1498 transitions. Word has length 46 [2020-10-27 05:38:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:18,613 INFO L481 AbstractCegarLoop]: Abstraction has 979 states and 1498 transitions. [2020-10-27 05:38:18,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:38:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1498 transitions. [2020-10-27 05:38:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 05:38:18,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:18,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:18,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:38:18,616 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash -739400431, now seen corresponding path program 1 times [2020-10-27 05:38:18,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:18,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439639274] [2020-10-27 05:38:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:18,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:18,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 05:38:18,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:38:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 05:38:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 05:38:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 05:38:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:19,127 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:19,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:19,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:19,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:19,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:38:19,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:19,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439639274] [2020-10-27 05:38:19,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:19,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:38:19,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182538969] [2020-10-27 05:38:19,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:38:19,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:19,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:38:19,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:38:19,159 INFO L87 Difference]: Start difference. First operand 979 states and 1498 transitions. Second operand 4 states. [2020-10-27 05:38:19,347 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:38:19,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:19,894 INFO L93 Difference]: Finished difference Result 2497 states and 3814 transitions. [2020-10-27 05:38:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:38:19,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-27 05:38:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:19,905 INFO L225 Difference]: With dead ends: 2497 [2020-10-27 05:38:19,905 INFO L226 Difference]: Without dead ends: 1542 [2020-10-27 05:38:19,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:38:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2020-10-27 05:38:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1539. [2020-10-27 05:38:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1539 states. [2020-10-27 05:38:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2314 transitions. [2020-10-27 05:38:20,050 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2314 transitions. Word has length 47 [2020-10-27 05:38:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:20,050 INFO L481 AbstractCegarLoop]: Abstraction has 1539 states and 2314 transitions. [2020-10-27 05:38:20,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:38:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2314 transitions. [2020-10-27 05:38:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 05:38:20,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:20,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:20,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:38:20,060 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash 643385751, now seen corresponding path program 1 times [2020-10-27 05:38:20,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:20,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882217366] [2020-10-27 05:38:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:20,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:20,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 05:38:20,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:38:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-27 05:38:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:38:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 05:38:20,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:20,679 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:20,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:20,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:20,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:20,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:38:20,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:20,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882217366] [2020-10-27 05:38:20,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:20,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:38:20,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135863673] [2020-10-27 05:38:20,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:38:20,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:20,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:38:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:38:20,733 INFO L87 Difference]: Start difference. First operand 1539 states and 2314 transitions. Second operand 6 states. [2020-10-27 05:38:20,994 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 05:38:21,564 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 05:38:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:21,717 INFO L93 Difference]: Finished difference Result 4529 states and 6814 transitions. [2020-10-27 05:38:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:38:21,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-27 05:38:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:21,734 INFO L225 Difference]: With dead ends: 4529 [2020-10-27 05:38:21,734 INFO L226 Difference]: Without dead ends: 3014 [2020-10-27 05:38:21,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:38:21,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2020-10-27 05:38:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 3011. [2020-10-27 05:38:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3011 states. [2020-10-27 05:38:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4482 transitions. [2020-10-27 05:38:21,977 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4482 transitions. Word has length 48 [2020-10-27 05:38:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:21,979 INFO L481 AbstractCegarLoop]: Abstraction has 3011 states and 4482 transitions. [2020-10-27 05:38:21,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:38:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4482 transitions. [2020-10-27 05:38:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 05:38:21,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:21,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:21,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:38:21,981 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1166417682, now seen corresponding path program 1 times [2020-10-27 05:38:21,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:21,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994900747] [2020-10-27 05:38:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:22,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 05:38:22,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 05:38:22,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:38:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 05:38:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:38:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:22,346 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:38:22,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:22,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994900747] [2020-10-27 05:38:22,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:22,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:38:22,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384856776] [2020-10-27 05:38:22,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:38:22,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:22,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:38:22,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:38:22,378 INFO L87 Difference]: Start difference. First operand 3011 states and 4482 transitions. Second operand 5 states. [2020-10-27 05:38:23,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:23,399 INFO L93 Difference]: Finished difference Result 6190 states and 9132 transitions. [2020-10-27 05:38:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:38:23,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-27 05:38:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:23,431 INFO L225 Difference]: With dead ends: 6190 [2020-10-27 05:38:23,432 INFO L226 Difference]: Without dead ends: 6187 [2020-10-27 05:38:23,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:38:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6187 states. [2020-10-27 05:38:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6187 to 3203. [2020-10-27 05:38:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3203 states. [2020-10-27 05:38:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4674 transitions. [2020-10-27 05:38:23,785 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4674 transitions. Word has length 48 [2020-10-27 05:38:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:23,785 INFO L481 AbstractCegarLoop]: Abstraction has 3203 states and 4674 transitions. [2020-10-27 05:38:23,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:38:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4674 transitions. [2020-10-27 05:38:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 05:38:23,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:23,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:23,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:38:23,787 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:23,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2097236675, now seen corresponding path program 1 times [2020-10-27 05:38:23,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:23,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233563746] [2020-10-27 05:38:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:23,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 05:38:23,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 05:38:23,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:38:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 05:38:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:24,116 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:24,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:24,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:24,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:38:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:24,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233563746] [2020-10-27 05:38:24,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:24,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:38:24,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054302782] [2020-10-27 05:38:24,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:38:24,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:24,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:38:24,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:38:24,151 INFO L87 Difference]: Start difference. First operand 3203 states and 4674 transitions. Second operand 4 states. [2020-10-27 05:38:24,326 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:38:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:24,982 INFO L93 Difference]: Finished difference Result 7095 states and 10340 transitions. [2020-10-27 05:38:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:38:24,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-27 05:38:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:25,002 INFO L225 Difference]: With dead ends: 7095 [2020-10-27 05:38:25,002 INFO L226 Difference]: Without dead ends: 3916 [2020-10-27 05:38:25,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:38:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2020-10-27 05:38:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3893. [2020-10-27 05:38:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3893 states. [2020-10-27 05:38:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 5628 transitions. [2020-10-27 05:38:25,342 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 5628 transitions. Word has length 49 [2020-10-27 05:38:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:25,342 INFO L481 AbstractCegarLoop]: Abstraction has 3893 states and 5628 transitions. [2020-10-27 05:38:25,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:38:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 5628 transitions. [2020-10-27 05:38:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:38:25,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:25,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:25,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:38:25,346 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:25,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:25,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1288443405, now seen corresponding path program 1 times [2020-10-27 05:38:25,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:25,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219044097] [2020-10-27 05:38:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:27,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:38:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:38:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2184 [2020-10-27 05:38:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:38:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:38:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:27,897 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:27,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:27,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:27,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:27,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:38:27,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:27,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219044097] [2020-10-27 05:38:27,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 05:38:27,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 05:38:27,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056237439] [2020-10-27 05:38:27,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:38:27,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:27,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:38:27,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:38:27,961 INFO L87 Difference]: Start difference. First operand 3893 states and 5628 transitions. Second operand 11 states. [2020-10-27 05:38:28,178 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 05:38:30,633 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 05:38:30,878 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:38:31,064 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 05:38:31,450 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2020-10-27 05:38:33,502 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2020-10-27 05:38:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:34,238 INFO L93 Difference]: Finished difference Result 29169 states and 41759 transitions. [2020-10-27 05:38:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 05:38:34,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-27 05:38:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:34,329 INFO L225 Difference]: With dead ends: 29169 [2020-10-27 05:38:34,329 INFO L226 Difference]: Without dead ends: 25302 [2020-10-27 05:38:34,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=620, Invalid=2242, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 05:38:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25302 states. [2020-10-27 05:38:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25302 to 8883. [2020-10-27 05:38:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8883 states. [2020-10-27 05:38:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8883 states to 8883 states and 12815 transitions. [2020-10-27 05:38:35,596 INFO L78 Accepts]: Start accepts. Automaton has 8883 states and 12815 transitions. Word has length 68 [2020-10-27 05:38:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:35,597 INFO L481 AbstractCegarLoop]: Abstraction has 8883 states and 12815 transitions. [2020-10-27 05:38:35,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:38:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8883 states and 12815 transitions. [2020-10-27 05:38:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:38:35,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:35,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:35,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:38:35,603 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:35,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1643761902, now seen corresponding path program 1 times [2020-10-27 05:38:35,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:35,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980273154] [2020-10-27 05:38:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:40,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:40,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:38:40,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:38:40,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:38:40,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:38:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:38:40,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:38:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:38:41,063 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:41,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:41,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:41,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:41,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:38:41,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:38:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:38:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:41,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980273154] [2020-10-27 05:38:41,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 05:38:41,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 05:38:41,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277297587] [2020-10-27 05:38:41,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:38:41,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:41,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:38:41,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:38:41,115 INFO L87 Difference]: Start difference. First operand 8883 states and 12815 transitions. Second operand 10 states. [2020-10-27 05:38:41,357 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 05:38:43,930 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 05:38:44,222 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 05:38:44,536 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-27 05:38:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:47,715 INFO L93 Difference]: Finished difference Result 38909 states and 56143 transitions. [2020-10-27 05:38:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:38:47,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-27 05:38:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:47,785 INFO L225 Difference]: With dead ends: 38909 [2020-10-27 05:38:47,785 INFO L226 Difference]: Without dead ends: 31942 [2020-10-27 05:38:47,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=283, Invalid=907, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 05:38:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31942 states. [2020-10-27 05:38:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31942 to 13559. [2020-10-27 05:38:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13559 states. [2020-10-27 05:38:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13559 states to 13559 states and 19639 transitions. [2020-10-27 05:38:49,466 INFO L78 Accepts]: Start accepts. Automaton has 13559 states and 19639 transitions. Word has length 68 [2020-10-27 05:38:49,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:49,467 INFO L481 AbstractCegarLoop]: Abstraction has 13559 states and 19639 transitions. [2020-10-27 05:38:49,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:38:49,467 INFO L276 IsEmpty]: Start isEmpty. Operand 13559 states and 19639 transitions. [2020-10-27 05:38:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:38:49,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:49,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:49,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:38:49,472 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:49,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:49,473 INFO L82 PathProgramCache]: Analyzing trace with hash 845698058, now seen corresponding path program 1 times [2020-10-27 05:38:49,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:49,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327115576] [2020-10-27 05:38:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:49,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:49,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:38:49,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:38:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-27 05:38:49,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:38:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 05:38:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:50,159 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:50,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:50,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:50,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:50,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:38:50,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 05:38:50,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327115576] [2020-10-27 05:38:50,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:38:50,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:38:50,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506666532] [2020-10-27 05:38:50,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:38:50,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:50,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:38:50,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:38:50,210 INFO L87 Difference]: Start difference. First operand 13559 states and 19639 transitions. Second operand 6 states. [2020-10-27 05:38:50,404 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 05:38:51,139 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 05:38:53,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:38:53,192 INFO L93 Difference]: Finished difference Result 40329 states and 58273 transitions. [2020-10-27 05:38:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:38:53,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-27 05:38:53,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:38:53,251 INFO L225 Difference]: With dead ends: 40329 [2020-10-27 05:38:53,251 INFO L226 Difference]: Without dead ends: 26796 [2020-10-27 05:38:53,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:38:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2020-10-27 05:38:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 26793. [2020-10-27 05:38:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26793 states. [2020-10-27 05:38:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26793 states to 26793 states and 38362 transitions. [2020-10-27 05:38:56,337 INFO L78 Accepts]: Start accepts. Automaton has 26793 states and 38362 transitions. Word has length 68 [2020-10-27 05:38:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:38:56,338 INFO L481 AbstractCegarLoop]: Abstraction has 26793 states and 38362 transitions. [2020-10-27 05:38:56,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:38:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 26793 states and 38362 transitions. [2020-10-27 05:38:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:38:56,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:38:56,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:38:56,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:38:56,344 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:38:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:38:56,344 INFO L82 PathProgramCache]: Analyzing trace with hash 342653231, now seen corresponding path program 1 times [2020-10-27 05:38:56,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:38:56,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395666768] [2020-10-27 05:38:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:38:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:56,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:57,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:38:57,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:38:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-27 05:38:57,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:38:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:38:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 05:38:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:38:58,077 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:38:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:38:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:38:58,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:38:58,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:38:58,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:38:58,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:38:58,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:38:58,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:38:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:38:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:38:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:38:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:38:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:38:58,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395666768] [2020-10-27 05:38:58,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 05:38:58,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 05:38:58,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931905434] [2020-10-27 05:38:58,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:38:58,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:38:58,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:38:58,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:38:58,141 INFO L87 Difference]: Start difference. First operand 26793 states and 38362 transitions. Second operand 11 states. [2020-10-27 05:38:58,366 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 05:39:00,688 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 05:39:00,896 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:39:01,167 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 05:39:01,449 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 05:39:07,352 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 05:39:07,933 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 134 [2020-10-27 05:39:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:39:24,915 INFO L93 Difference]: Finished difference Result 231696 states and 328099 transitions. [2020-10-27 05:39:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-27 05:39:24,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-27 05:39:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:39:25,573 INFO L225 Difference]: With dead ends: 231696 [2020-10-27 05:39:25,573 INFO L226 Difference]: Without dead ends: 208705 [2020-10-27 05:39:25,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=709, Invalid=2951, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 05:39:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208705 states. [2020-10-27 05:39:35,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208705 to 70935. [2020-10-27 05:39:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70935 states. [2020-10-27 05:39:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70935 states to 70935 states and 101283 transitions. [2020-10-27 05:39:35,147 INFO L78 Accepts]: Start accepts. Automaton has 70935 states and 101283 transitions. Word has length 68 [2020-10-27 05:39:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:39:35,148 INFO L481 AbstractCegarLoop]: Abstraction has 70935 states and 101283 transitions. [2020-10-27 05:39:35,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:39:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand 70935 states and 101283 transitions. [2020-10-27 05:39:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:39:35,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:39:35,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:39:35,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:39:35,156 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:39:35,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:39:35,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1067849665, now seen corresponding path program 1 times [2020-10-27 05:39:35,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:39:35,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105927763] [2020-10-27 05:39:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:39:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:36,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:37,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:37,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:39:37,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:39:37,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2392 [2020-10-27 05:39:37,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:39:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:39:37,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:39:37,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:37,936 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:39:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:39:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:39:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:39:37,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:39:37,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:39:37,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:39:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:39:37,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:39:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:39:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:39:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:39:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:39:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:39:37,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105927763] [2020-10-27 05:39:37,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 05:39:37,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 05:39:37,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392832262] [2020-10-27 05:39:37,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:39:37,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:39:37,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:39:37,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:39:37,985 INFO L87 Difference]: Start difference. First operand 70935 states and 101283 transitions. Second operand 10 states. [2020-10-27 05:39:38,188 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-27 05:39:40,487 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-27 05:39:40,730 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-27 05:39:41,179 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-27 05:40:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:40:08,175 INFO L93 Difference]: Finished difference Result 289045 states and 411378 transitions. [2020-10-27 05:40:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:40:08,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-27 05:40:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:40:08,751 INFO L225 Difference]: With dead ends: 289045 [2020-10-27 05:40:08,751 INFO L226 Difference]: Without dead ends: 218136 [2020-10-27 05:40:08,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=283, Invalid=907, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 05:40:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218136 states. [2020-10-27 05:40:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218136 to 125633. [2020-10-27 05:40:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125633 states. [2020-10-27 05:40:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125633 states to 125633 states and 179144 transitions. [2020-10-27 05:40:25,496 INFO L78 Accepts]: Start accepts. Automaton has 125633 states and 179144 transitions. Word has length 68 [2020-10-27 05:40:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:40:25,496 INFO L481 AbstractCegarLoop]: Abstraction has 125633 states and 179144 transitions. [2020-10-27 05:40:25,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:40:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 125633 states and 179144 transitions. [2020-10-27 05:40:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:40:25,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:40:25,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:40:25,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:40:25,504 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:40:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:40:25,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1739323891, now seen corresponding path program 1 times [2020-10-27 05:40:25,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:40:25,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582376020] [2020-10-27 05:40:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:40:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:26,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:26,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:40:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:40:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1368 [2020-10-27 05:40:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:40:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:40:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:40:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:27,239 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 05:40:27,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:40:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:40:27,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:40:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:40:27,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:40:27,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:40:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:40:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:40:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:40:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:40:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:40:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:40:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:40:27,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582376020] [2020-10-27 05:40:27,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 05:40:27,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 05:40:27,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725000448] [2020-10-27 05:40:27,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:40:27,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:40:27,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:40:27,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:40:27,288 INFO L87 Difference]: Start difference. First operand 125633 states and 179144 transitions. Second operand 11 states. [2020-10-27 05:40:27,516 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 05:40:30,095 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 05:40:30,330 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 05:40:30,783 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2020-10-27 05:40:31,107 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 05:40:39,545 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133