/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:48:57,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:48:57,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:48:57,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:48:57,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:48:57,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:48:57,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:48:57,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:48:57,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:48:57,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:48:57,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:48:57,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:48:57,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:48:57,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:48:57,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:48:57,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:48:57,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:48:57,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:48:57,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:48:57,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:48:57,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:48:57,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:48:57,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:48:57,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:48:57,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:48:57,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:48:57,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:48:57,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:48:57,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:48:57,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:48:57,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:48:57,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:48:57,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:48:57,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:48:57,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:48:57,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:48:57,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:48:57,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:48:57,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:48:57,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:48:57,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:48:57,968 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 [2020-10-15 03:48:58,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:48:58,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:48:58,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:48:58,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:48:58,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:48:58,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:48:58,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:48:58,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:48:58,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:48:58,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:48:58,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:48:58,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:48:58,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:48:58,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:48:58,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:48:58,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:48:58,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:48:58,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:48:58,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:48:58,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:48:58,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:48:58,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:48:58,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:48:58,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:48:58,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:48:58,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:48:58,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:48:58,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:48:58,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:48:58,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:48:58,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:48:58,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:48:58,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:48:58,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:48:58,348 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:48:58,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:48:58,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b39365dd/d676913c3a6b49ceb448c646d5c04dcb/FLAGa3b50aec1 [2020-10-15 03:48:58,869 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:48:58,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:48:58,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b39365dd/d676913c3a6b49ceb448c646d5c04dcb/FLAGa3b50aec1 [2020-10-15 03:48:59,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b39365dd/d676913c3a6b49ceb448c646d5c04dcb [2020-10-15 03:48:59,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:48:59,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:48:59,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:48:59,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:48:59,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:48:59,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e60d8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59, skipping insertion in model container [2020-10-15 03:48:59,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:48:59,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:48:59,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:48:59,742 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:48:59,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:48:59,866 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:48:59,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59 WrapperNode [2020-10-15 03:48:59,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:48:59,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:48:59,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:48:59,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:48:59,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (1/1) ... [2020-10-15 03:48:59,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:48:59,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:48:59,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:48:59,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:48:59,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (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 [2020-10-15 03:48:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:48:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:48:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:48:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:48:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:48:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:48:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:48:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:48:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:48:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:48:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:48:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:48:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:48:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:48:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:48:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:48:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:48:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:48:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:48:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:48:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:48:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:49:00,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:49:00,716 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:49:00,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:49:00 BoogieIcfgContainer [2020-10-15 03:49:00,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:49:00,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:49:00,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:49:00,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:49:00,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:48:59" (1/3) ... [2020-10-15 03:49:00,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9bd8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:49:00, skipping insertion in model container [2020-10-15 03:49:00,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:59" (2/3) ... [2020-10-15 03:49:00,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9bd8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:49:00, skipping insertion in model container [2020-10-15 03:49:00,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:49:00" (3/3) ... [2020-10-15 03:49:00,731 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:49:00,741 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:49:00,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:49:00,765 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:49:00,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:49:00,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:49:00,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:49:00,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:49:00,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:49:00,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:49:00,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:49:00,794 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:49:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-10-15 03:49:00,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:49:00,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:00,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:00,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1975084241, now seen corresponding path program 1 times [2020-10-15 03:49:00,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:00,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759077536] [2020-10-15 03:49:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:01,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:02,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:02,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:49:02,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:02,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1817 [2020-10-15 03:49:02,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:02,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:49:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:49:02,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:49:02,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:49:03,292 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:03,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:03,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:03,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:03,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 03:49:03,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:03,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:03,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759077536] [2020-10-15 03:49:03,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:03,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:03,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294025368] [2020-10-15 03:49:03,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:49:03,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:03,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:49:03,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:03,415 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 7 states. [2020-10-15 03:49:03,630 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 03:49:04,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:04,668 INFO L93 Difference]: Finished difference Result 615 states and 989 transitions. [2020-10-15 03:49:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:49:04,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-15 03:49:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:04,689 INFO L225 Difference]: With dead ends: 615 [2020-10-15 03:49:04,689 INFO L226 Difference]: Without dead ends: 515 [2020-10-15 03:49:04,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:49:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-15 03:49:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 264. [2020-10-15 03:49:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 03:49:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 395 transitions. [2020-10-15 03:49:04,785 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 395 transitions. Word has length 67 [2020-10-15 03:49:04,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:04,785 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 395 transitions. [2020-10-15 03:49:04,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:49:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 395 transitions. [2020-10-15 03:49:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:49:04,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:04,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:04,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:49:04,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash 836650623, now seen corresponding path program 1 times [2020-10-15 03:49:04,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:04,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640625814] [2020-10-15 03:49:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:05,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:49:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-15 03:49:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:49:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:49:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:49:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:05,743 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:05,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:05,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:05,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:49:05,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:05,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:05,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:05,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640625814] [2020-10-15 03:49:05,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:05,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:05,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173777934] [2020-10-15 03:49:05,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:49:05,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:05,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:49:05,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:05,818 INFO L87 Difference]: Start difference. First operand 264 states and 395 transitions. Second operand 7 states. [2020-10-15 03:49:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:07,022 INFO L93 Difference]: Finished difference Result 972 states and 1499 transitions. [2020-10-15 03:49:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:07,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-15 03:49:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:07,028 INFO L225 Difference]: With dead ends: 972 [2020-10-15 03:49:07,029 INFO L226 Difference]: Without dead ends: 770 [2020-10-15 03:49:07,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-10-15 03:49:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 764. [2020-10-15 03:49:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2020-10-15 03:49:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1168 transitions. [2020-10-15 03:49:07,106 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1168 transitions. Word has length 68 [2020-10-15 03:49:07,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:07,106 INFO L479 AbstractCegarLoop]: Abstraction has 764 states and 1168 transitions. [2020-10-15 03:49:07,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:49:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1168 transitions. [2020-10-15 03:49:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:07,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:07,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:07,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:49:07,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash 499104773, now seen corresponding path program 1 times [2020-10-15 03:49:07,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:07,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796559011] [2020-10-15 03:49:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:07,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:07,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:07,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:07,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-15 03:49:07,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:07,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:07,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:49:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:07,771 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:07,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:07,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:07,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:07,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:07,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:49:07,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:07,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:07,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796559011] [2020-10-15 03:49:07,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:07,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:07,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401983146] [2020-10-15 03:49:07,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:07,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:07,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:07,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:07,823 INFO L87 Difference]: Start difference. First operand 764 states and 1168 transitions. Second operand 6 states. [2020-10-15 03:49:07,960 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:08,712 INFO L93 Difference]: Finished difference Result 2036 states and 3158 transitions. [2020-10-15 03:49:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:08,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:49:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:08,723 INFO L225 Difference]: With dead ends: 2036 [2020-10-15 03:49:08,723 INFO L226 Difference]: Without dead ends: 1322 [2020-10-15 03:49:08,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-15 03:49:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2020-10-15 03:49:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-10-15 03:49:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2033 transitions. [2020-10-15 03:49:08,870 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2033 transitions. Word has length 69 [2020-10-15 03:49:08,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:08,870 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 2033 transitions. [2020-10-15 03:49:08,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2033 transitions. [2020-10-15 03:49:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:08,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:08,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:08,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:49:08,875 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:08,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:08,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1672553433, now seen corresponding path program 1 times [2020-10-15 03:49:08,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:08,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701937882] [2020-10-15 03:49:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:09,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:09,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:09,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:09,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-15 03:49:09,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:49:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:09,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:09,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:09,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:09,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:49:09,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:09,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:49:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:09,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701937882] [2020-10-15 03:49:09,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:09,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:09,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526661059] [2020-10-15 03:49:09,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:09,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:09,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:09,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:09,595 INFO L87 Difference]: Start difference. First operand 1320 states and 2033 transitions. Second operand 6 states. [2020-10-15 03:49:09,736 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:10,529 INFO L93 Difference]: Finished difference Result 3532 states and 5499 transitions. [2020-10-15 03:49:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:10,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:49:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:10,542 INFO L225 Difference]: With dead ends: 3532 [2020-10-15 03:49:10,542 INFO L226 Difference]: Without dead ends: 2312 [2020-10-15 03:49:10,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2020-10-15 03:49:10,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2310. [2020-10-15 03:49:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-10-15 03:49:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 3571 transitions. [2020-10-15 03:49:10,685 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 3571 transitions. Word has length 69 [2020-10-15 03:49:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:10,685 INFO L479 AbstractCegarLoop]: Abstraction has 2310 states and 3571 transitions. [2020-10-15 03:49:10,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 3571 transitions. [2020-10-15 03:49:10,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:10,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:10,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:10,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:49:10,688 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:10,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:10,689 INFO L82 PathProgramCache]: Analyzing trace with hash 5084694, now seen corresponding path program 1 times [2020-10-15 03:49:10,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:10,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096264230] [2020-10-15 03:49:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:11,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:11,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-15 03:49:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:11,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:49:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:11,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:11,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:11,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:49:11,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:11,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:11,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096264230] [2020-10-15 03:49:11,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:11,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:11,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761559837] [2020-10-15 03:49:11,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:11,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:11,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:11,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:11,497 INFO L87 Difference]: Start difference. First operand 2310 states and 3571 transitions. Second operand 6 states. [2020-10-15 03:49:11,634 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 03:49:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:12,483 INFO L93 Difference]: Finished difference Result 6557 states and 10174 transitions. [2020-10-15 03:49:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:12,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:49:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:12,505 INFO L225 Difference]: With dead ends: 6557 [2020-10-15 03:49:12,506 INFO L226 Difference]: Without dead ends: 4320 [2020-10-15 03:49:12,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2020-10-15 03:49:12,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 4318. [2020-10-15 03:49:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4318 states. [2020-10-15 03:49:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 6647 transitions. [2020-10-15 03:49:12,762 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 6647 transitions. Word has length 69 [2020-10-15 03:49:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:12,762 INFO L479 AbstractCegarLoop]: Abstraction has 4318 states and 6647 transitions. [2020-10-15 03:49:12,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 6647 transitions. [2020-10-15 03:49:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:49:12,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:12,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:12,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:49:12,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1121481750, now seen corresponding path program 1 times [2020-10-15 03:49:12,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:12,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78462456] [2020-10-15 03:49:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:14,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-15 03:49:14,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:14,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:49:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:49:14,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:49:14,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:15,305 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:15,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:15,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:15,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:15,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:49:15,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:15,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:15,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:15,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:15,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78462456] [2020-10-15 03:49:15,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:15,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:49:15,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107636517] [2020-10-15 03:49:15,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:49:15,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:15,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:49:15,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:15,363 INFO L87 Difference]: Start difference. First operand 4318 states and 6647 transitions. Second operand 9 states. [2020-10-15 03:49:15,552 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:49:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:18,992 INFO L93 Difference]: Finished difference Result 23630 states and 36233 transitions. [2020-10-15 03:49:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:49:18,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 03:49:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:19,086 INFO L225 Difference]: With dead ends: 23630 [2020-10-15 03:49:19,086 INFO L226 Difference]: Without dead ends: 21024 [2020-10-15 03:49:19,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:49:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21024 states. [2020-10-15 03:49:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21024 to 4413. [2020-10-15 03:49:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4413 states. [2020-10-15 03:49:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6774 transitions. [2020-10-15 03:49:19,689 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6774 transitions. Word has length 70 [2020-10-15 03:49:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:19,692 INFO L479 AbstractCegarLoop]: Abstraction has 4413 states and 6774 transitions. [2020-10-15 03:49:19,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:49:19,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6774 transitions. [2020-10-15 03:49:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:49:19,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:19,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:19,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:49:19,696 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:19,696 INFO L82 PathProgramCache]: Analyzing trace with hash -868979926, now seen corresponding path program 1 times [2020-10-15 03:49:19,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:19,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589204955] [2020-10-15 03:49:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:19,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:21,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:49:21,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-15 03:49:21,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:21,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:21,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:49:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:49:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:49:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:21,607 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:21,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:21,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:49:21,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:21,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:21,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589204955] [2020-10-15 03:49:21,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:21,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:49:21,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868613738] [2020-10-15 03:49:21,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:49:21,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:21,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:49:21,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:21,658 INFO L87 Difference]: Start difference. First operand 4413 states and 6774 transitions. Second operand 9 states. [2020-10-15 03:49:21,886 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:49:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:25,340 INFO L93 Difference]: Finished difference Result 18594 states and 28528 transitions. [2020-10-15 03:49:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:49:25,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 03:49:25,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:25,381 INFO L225 Difference]: With dead ends: 18594 [2020-10-15 03:49:25,381 INFO L226 Difference]: Without dead ends: 17959 [2020-10-15 03:49:25,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:49:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17959 states. [2020-10-15 03:49:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17959 to 4413. [2020-10-15 03:49:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4413 states. [2020-10-15 03:49:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6772 transitions. [2020-10-15 03:49:25,951 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6772 transitions. Word has length 70 [2020-10-15 03:49:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:25,952 INFO L479 AbstractCegarLoop]: Abstraction has 4413 states and 6772 transitions. [2020-10-15 03:49:25,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:49:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6772 transitions. [2020-10-15 03:49:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:49:25,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:25,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:25,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:49:25,955 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1742349430, now seen corresponding path program 1 times [2020-10-15 03:49:25,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:25,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585310461] [2020-10-15 03:49:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:27,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:27,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:49:27,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-15 03:49:27,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:27,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:49:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:49:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:49:27,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:27,736 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:27,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:27,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:27,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:27,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:49:27,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:27,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:27,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585310461] [2020-10-15 03:49:27,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:27,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:49:27,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984703277] [2020-10-15 03:49:27,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:49:27,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:49:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:27,770 INFO L87 Difference]: Start difference. First operand 4413 states and 6772 transitions. Second operand 9 states. [2020-10-15 03:49:27,928 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-15 03:49:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:31,699 INFO L93 Difference]: Finished difference Result 21850 states and 33693 transitions. [2020-10-15 03:49:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:49:31,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 03:49:31,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:31,740 INFO L225 Difference]: With dead ends: 21850 [2020-10-15 03:49:31,740 INFO L226 Difference]: Without dead ends: 19744 [2020-10-15 03:49:31,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:49:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19744 states. [2020-10-15 03:49:32,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19744 to 4566. [2020-10-15 03:49:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4566 states. [2020-10-15 03:49:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 6974 transitions. [2020-10-15 03:49:32,295 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 6974 transitions. Word has length 70 [2020-10-15 03:49:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:32,296 INFO L479 AbstractCegarLoop]: Abstraction has 4566 states and 6974 transitions. [2020-10-15 03:49:32,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:49:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 6974 transitions. [2020-10-15 03:49:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:49:32,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:32,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:32,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:49:32,300 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:32,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:32,300 INFO L82 PathProgramCache]: Analyzing trace with hash -35248825, now seen corresponding path program 1 times [2020-10-15 03:49:32,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:32,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613209642] [2020-10-15 03:49:32,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:32,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:32,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:49:32,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:32,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-15 03:49:32,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:32,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:32,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 03:49:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:32,869 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:32,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:32,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:49:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:32,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:32,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613209642] [2020-10-15 03:49:32,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:32,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:32,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002746718] [2020-10-15 03:49:32,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:32,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:32,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:32,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:32,917 INFO L87 Difference]: Start difference. First operand 4566 states and 6974 transitions. Second operand 6 states. [2020-10-15 03:49:33,056 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-15 03:49:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:34,519 INFO L93 Difference]: Finished difference Result 13241 states and 20280 transitions. [2020-10-15 03:49:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:34,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:49:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:34,543 INFO L225 Difference]: With dead ends: 13241 [2020-10-15 03:49:34,543 INFO L226 Difference]: Without dead ends: 8727 [2020-10-15 03:49:34,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8727 states. [2020-10-15 03:49:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8727 to 8725. [2020-10-15 03:49:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8725 states. [2020-10-15 03:49:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8725 states to 8725 states and 13298 transitions. [2020-10-15 03:49:35,393 INFO L78 Accepts]: Start accepts. Automaton has 8725 states and 13298 transitions. Word has length 70 [2020-10-15 03:49:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:35,393 INFO L479 AbstractCegarLoop]: Abstraction has 8725 states and 13298 transitions. [2020-10-15 03:49:35,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8725 states and 13298 transitions. [2020-10-15 03:49:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:49:35,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:35,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:35,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:49:35,397 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:35,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1064422929, now seen corresponding path program 1 times [2020-10-15 03:49:35,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:35,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20663474] [2020-10-15 03:49:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:35,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:49:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-15 03:49:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:35,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:49:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 03:49:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:49:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:35,714 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:49:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:35,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:35,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:35,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:49:35,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:35,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:35,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20663474] [2020-10-15 03:49:35,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:35,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:35,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133502092] [2020-10-15 03:49:35,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:49:35,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:49:35,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:49:35,754 INFO L87 Difference]: Start difference. First operand 8725 states and 13298 transitions. Second operand 5 states. [2020-10-15 03:49:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:38,141 INFO L93 Difference]: Finished difference Result 16679 states and 25443 transitions. [2020-10-15 03:49:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:49:38,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 03:49:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:38,162 INFO L225 Difference]: With dead ends: 16679 [2020-10-15 03:49:38,162 INFO L226 Difference]: Without dead ends: 16677 [2020-10-15 03:49:38,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16677 states. [2020-10-15 03:49:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16677 to 8981. [2020-10-15 03:49:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8981 states. [2020-10-15 03:49:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8981 states to 8981 states and 13554 transitions. [2020-10-15 03:49:39,295 INFO L78 Accepts]: Start accepts. Automaton has 8981 states and 13554 transitions. Word has length 71 [2020-10-15 03:49:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:39,295 INFO L479 AbstractCegarLoop]: Abstraction has 8981 states and 13554 transitions. [2020-10-15 03:49:39,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:49:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8981 states and 13554 transitions. [2020-10-15 03:49:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:49:39,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:39,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:39,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:49:39,300 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:39,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1102286699, now seen corresponding path program 1 times [2020-10-15 03:49:39,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:39,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233608897] [2020-10-15 03:49:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:39,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:39,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:49:39,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-15 03:49:39,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:39,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:49:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:49:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:49:39,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:39,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:39,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:39,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:39,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:49:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:39,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:39,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233608897] [2020-10-15 03:49:39,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:39,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:39,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468215547] [2020-10-15 03:49:39,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:49:39,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:39,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:49:39,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:49:39,646 INFO L87 Difference]: Start difference. First operand 8981 states and 13554 transitions. Second operand 5 states. [2020-10-15 03:49:39,797 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:49:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:41,880 INFO L93 Difference]: Finished difference Result 23589 states and 35696 transitions. [2020-10-15 03:49:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:41,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 03:49:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:41,901 INFO L225 Difference]: With dead ends: 23589 [2020-10-15 03:49:41,901 INFO L226 Difference]: Without dead ends: 15635 [2020-10-15 03:49:41,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15635 states. [2020-10-15 03:49:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15635 to 15513. [2020-10-15 03:49:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15513 states. [2020-10-15 03:49:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15513 states to 15513 states and 23190 transitions. [2020-10-15 03:49:43,535 INFO L78 Accepts]: Start accepts. Automaton has 15513 states and 23190 transitions. Word has length 72 [2020-10-15 03:49:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:43,535 INFO L479 AbstractCegarLoop]: Abstraction has 15513 states and 23190 transitions. [2020-10-15 03:49:43,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:49:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 15513 states and 23190 transitions. [2020-10-15 03:49:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:49:43,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:43,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:43,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:49:43,539 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1065091068, now seen corresponding path program 1 times [2020-10-15 03:49:43,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:43,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509015376] [2020-10-15 03:49:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:45,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:45,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:49:45,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2016 [2020-10-15 03:49:45,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:45,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:49:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:49:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:49:45,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:45,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:45,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:45,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:49:45,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:45,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:45,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:45,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:45,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509015376] [2020-10-15 03:49:45,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:45,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:45,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485153721] [2020-10-15 03:49:45,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:49:45,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:45,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:49:45,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:45,790 INFO L87 Difference]: Start difference. First operand 15513 states and 23190 transitions. Second operand 7 states. [2020-10-15 03:49:45,951 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:49:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:50,652 INFO L93 Difference]: Finished difference Result 45989 states and 69528 transitions. [2020-10-15 03:49:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:49:50,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-15 03:49:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:50,690 INFO L225 Difference]: With dead ends: 45989 [2020-10-15 03:49:50,690 INFO L226 Difference]: Without dead ends: 38879 [2020-10-15 03:49:50,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:49:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38879 states. [2020-10-15 03:49:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38879 to 26127. [2020-10-15 03:49:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26127 states. [2020-10-15 03:49:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26127 states to 26127 states and 39179 transitions. [2020-10-15 03:49:54,330 INFO L78 Accepts]: Start accepts. Automaton has 26127 states and 39179 transitions. Word has length 72 [2020-10-15 03:49:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:54,331 INFO L479 AbstractCegarLoop]: Abstraction has 26127 states and 39179 transitions. [2020-10-15 03:49:54,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:49:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 26127 states and 39179 transitions. [2020-10-15 03:49:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:49:54,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:54,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:54,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:49:54,335 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:54,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:54,335 INFO L82 PathProgramCache]: Analyzing trace with hash -701969532, now seen corresponding path program 1 times [2020-10-15 03:49:54,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:54,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914976888] [2020-10-15 03:49:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:54,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:55,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:55,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:49:55,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-15 03:49:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:55,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:49:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:49:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:49:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:56,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:56,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:56,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:49:56,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:56,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:56,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914976888] [2020-10-15 03:49:56,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:56,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:56,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363738780] [2020-10-15 03:49:56,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:49:56,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:56,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:49:56,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:56,034 INFO L87 Difference]: Start difference. First operand 26127 states and 39179 transitions. Second operand 7 states. [2020-10-15 03:49:56,176 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:50:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:01,564 INFO L93 Difference]: Finished difference Result 55389 states and 83282 transitions. [2020-10-15 03:50:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:50:01,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-15 03:50:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:01,608 INFO L225 Difference]: With dead ends: 55389 [2020-10-15 03:50:01,609 INFO L226 Difference]: Without dead ends: 44291 [2020-10-15 03:50:01,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:50:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44291 states. [2020-10-15 03:50:05,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44291 to 29397. [2020-10-15 03:50:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29397 states. [2020-10-15 03:50:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29397 states to 29397 states and 44060 transitions. [2020-10-15 03:50:05,766 INFO L78 Accepts]: Start accepts. Automaton has 29397 states and 44060 transitions. Word has length 72 [2020-10-15 03:50:05,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:05,767 INFO L479 AbstractCegarLoop]: Abstraction has 29397 states and 44060 transitions. [2020-10-15 03:50:05,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:50:05,767 INFO L276 IsEmpty]: Start isEmpty. Operand 29397 states and 44060 transitions. [2020-10-15 03:50:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:50:05,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:05,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:05,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:50:05,770 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:05,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1620115166, now seen corresponding path program 1 times [2020-10-15 03:50:05,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:05,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739030573] [2020-10-15 03:50:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:07,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:07,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:50:07,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:50:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-10-15 03:50:07,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:07,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:50:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:50:07,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:50:07,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:07,539 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:50:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:07,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:50:07,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:07,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:07,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739030573] [2020-10-15 03:50:07,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:07,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:07,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441364871] [2020-10-15 03:50:07,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:50:07,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:07,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:50:07,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:50:07,581 INFO L87 Difference]: Start difference. First operand 29397 states and 44060 transitions. Second operand 7 states. [2020-10-15 03:50:07,901 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:50:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:13,821 INFO L93 Difference]: Finished difference Result 52243 states and 78273 transitions. [2020-10-15 03:50:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:50:13,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-15 03:50:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:13,874 INFO L225 Difference]: With dead ends: 52243 [2020-10-15 03:50:13,874 INFO L226 Difference]: Without dead ends: 48161 [2020-10-15 03:50:13,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:50:13,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48161 states. [2020-10-15 03:50:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48161 to 31484. [2020-10-15 03:50:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31484 states. [2020-10-15 03:50:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31484 states to 31484 states and 47155 transitions. [2020-10-15 03:50:17,609 INFO L78 Accepts]: Start accepts. Automaton has 31484 states and 47155 transitions. Word has length 72 [2020-10-15 03:50:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:17,609 INFO L479 AbstractCegarLoop]: Abstraction has 31484 states and 47155 transitions. [2020-10-15 03:50:17,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:50:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 31484 states and 47155 transitions. [2020-10-15 03:50:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:50:17,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:17,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:17,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:50:17,613 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:17,613 INFO L82 PathProgramCache]: Analyzing trace with hash -520885437, now seen corresponding path program 1 times [2020-10-15 03:50:17,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:17,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693591457] [2020-10-15 03:50:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:19,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:19,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:50:19,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:50:19,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2142 [2020-10-15 03:50:19,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:19,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:50:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:50:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:50:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:19,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:50:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:19,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:19,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693591457] [2020-10-15 03:50:19,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:19,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:19,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793037392] [2020-10-15 03:50:19,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:50:19,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:19,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:50:19,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:50:19,968 INFO L87 Difference]: Start difference. First operand 31484 states and 47155 transitions. Second operand 7 states. [2020-10-15 03:50:20,122 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:50:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:27,159 INFO L93 Difference]: Finished difference Result 64491 states and 96707 transitions. [2020-10-15 03:50:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:50:27,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-10-15 03:50:27,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:27,217 INFO L225 Difference]: With dead ends: 64491 [2020-10-15 03:50:27,217 INFO L226 Difference]: Without dead ends: 53337 [2020-10-15 03:50:27,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:50:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53337 states. [2020-10-15 03:50:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53337 to 36518. [2020-10-15 03:50:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36518 states. [2020-10-15 03:50:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36518 states to 36518 states and 54688 transitions. [2020-10-15 03:50:31,396 INFO L78 Accepts]: Start accepts. Automaton has 36518 states and 54688 transitions. Word has length 73 [2020-10-15 03:50:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:31,397 INFO L479 AbstractCegarLoop]: Abstraction has 36518 states and 54688 transitions. [2020-10-15 03:50:31,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:50:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 36518 states and 54688 transitions. [2020-10-15 03:50:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:50:31,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:31,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:31,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:50:31,401 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:31,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1208354554, now seen corresponding path program 1 times [2020-10-15 03:50:31,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:31,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425602593] [2020-10-15 03:50:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:36,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:36,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:50:36,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:50:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4773 [2020-10-15 03:50:36,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:36,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:50:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:36,377 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:50:36,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:36,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:36,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:36,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:50:36,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:36,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425602593] [2020-10-15 03:50:36,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:36,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:36,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511377934] [2020-10-15 03:50:36,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:36,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:36,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:36,426 INFO L87 Difference]: Start difference. First operand 36518 states and 54688 transitions. Second operand 8 states. [2020-10-15 03:50:36,608 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:54,459 INFO L93 Difference]: Finished difference Result 145039 states and 215751 transitions. [2020-10-15 03:50:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:50:54,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:50:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:54,630 INFO L225 Difference]: With dead ends: 145039 [2020-10-15 03:50:54,630 INFO L226 Difference]: Without dead ends: 130546 [2020-10-15 03:50:54,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:50:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130546 states. [2020-10-15 03:50:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130546 to 36558. [2020-10-15 03:50:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36558 states. [2020-10-15 03:50:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36558 states to 36558 states and 54740 transitions. [2020-10-15 03:50:59,861 INFO L78 Accepts]: Start accepts. Automaton has 36558 states and 54740 transitions. Word has length 75 [2020-10-15 03:50:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:59,861 INFO L479 AbstractCegarLoop]: Abstraction has 36558 states and 54740 transitions. [2020-10-15 03:50:59,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:50:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 36558 states and 54740 transitions. [2020-10-15 03:50:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:50:59,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:59,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:59,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:50:59,865 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:59,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1010513604, now seen corresponding path program 1 times [2020-10-15 03:50:59,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:59,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048700876] [2020-10-15 03:50:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:02,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:51:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:51:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2875 [2020-10-15 03:51:02,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:02,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:51:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:51:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:51:03,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:03,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:03,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048700876] [2020-10-15 03:51:03,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:03,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:51:03,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485643415] [2020-10-15 03:51:03,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:51:03,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:03,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:51:03,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:03,041 INFO L87 Difference]: Start difference. First operand 36558 states and 54740 transitions. Second operand 8 states. [2020-10-15 03:51:03,188 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 03:51:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:28,132 INFO L93 Difference]: Finished difference Result 200212 states and 298458 transitions. [2020-10-15 03:51:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:51:28,132 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:51:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:28,347 INFO L225 Difference]: With dead ends: 200212 [2020-10-15 03:51:28,347 INFO L226 Difference]: Without dead ends: 164795 [2020-10-15 03:51:28,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:51:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164795 states. [2020-10-15 03:51:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164795 to 36709. [2020-10-15 03:51:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36709 states. [2020-10-15 03:51:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36709 states to 36709 states and 54643 transitions. [2020-10-15 03:51:34,134 INFO L78 Accepts]: Start accepts. Automaton has 36709 states and 54643 transitions. Word has length 75 [2020-10-15 03:51:34,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:34,135 INFO L479 AbstractCegarLoop]: Abstraction has 36709 states and 54643 transitions. [2020-10-15 03:51:34,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:51:34,135 INFO L276 IsEmpty]: Start isEmpty. Operand 36709 states and 54643 transitions. [2020-10-15 03:51:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:51:34,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:34,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:34,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:51:34,139 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1571207352, now seen corresponding path program 1 times [2020-10-15 03:51:34,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:34,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473792128] [2020-10-15 03:51:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:38,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:38,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:51:38,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:51:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4367 [2020-10-15 03:51:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:38,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:38,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:51:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:51:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:38,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:38,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:38,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:38,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:38,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:51:38,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:38,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:38,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:38,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:38,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:38,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473792128] [2020-10-15 03:51:38,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:38,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:51:38,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582423760] [2020-10-15 03:51:38,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:51:38,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:38,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:51:38,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:38,798 INFO L87 Difference]: Start difference. First operand 36709 states and 54643 transitions. Second operand 8 states. [2020-10-15 03:51:38,933 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-15 03:52:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:16,464 INFO L93 Difference]: Finished difference Result 264113 states and 392614 transitions. [2020-10-15 03:52:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:52:16,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:52:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:17,007 INFO L225 Difference]: With dead ends: 264113 [2020-10-15 03:52:17,007 INFO L226 Difference]: Without dead ends: 228876 [2020-10-15 03:52:17,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:52:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228876 states. [2020-10-15 03:52:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228876 to 36681. [2020-10-15 03:52:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36681 states. [2020-10-15 03:52:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36681 states to 36681 states and 54351 transitions. [2020-10-15 03:52:26,201 INFO L78 Accepts]: Start accepts. Automaton has 36681 states and 54351 transitions. Word has length 75 [2020-10-15 03:52:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:26,201 INFO L479 AbstractCegarLoop]: Abstraction has 36681 states and 54351 transitions. [2020-10-15 03:52:26,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 36681 states and 54351 transitions. [2020-10-15 03:52:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:52:26,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:26,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:26,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:52:26,206 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:26,206 INFO L82 PathProgramCache]: Analyzing trace with hash 643211718, now seen corresponding path program 1 times [2020-10-15 03:52:26,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:26,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860658087] [2020-10-15 03:52:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:28,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:52:28,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:28,821 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-15 03:52:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:28,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:28,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:28,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:52:28,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:28,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:52:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:28,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860658087] [2020-10-15 03:52:28,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:28,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:52:28,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377228685] [2020-10-15 03:52:28,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:28,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:28,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:28,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:28,852 INFO L87 Difference]: Start difference. First operand 36681 states and 54351 transitions. Second operand 8 states. [2020-10-15 03:52:28,995 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 126