/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=NARROWEST --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_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:00:20,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:00:20,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:00:20,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:00:20,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:00:20,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:00:20,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:00:20,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:00:20,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:00:20,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:00:20,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:00:20,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:00:20,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:00:20,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:00:20,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:00:20,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:00:20,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:00:20,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:00:20,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:00:20,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:00:20,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:00:20,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:00:20,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:00:20,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:00:20,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:00:20,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:00:20,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:00:20,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:00:20,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:00:20,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:00:20,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:00:20,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:00:20,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:00:20,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:00:20,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:00:20,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:00:20,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:00:20,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:00:20,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:00:20,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:00:20,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:00:20,065 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 [2020-10-13 15:00:20,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:00:20,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:00:20,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:00:20,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:00:20,098 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:00:20,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:00:20,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:00:20,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:00:20,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:00:20,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:00:20,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:00:20,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:00:20,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:00:20,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:00:20,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:00:20,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:00:20,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:00:20,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:00:20,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:00:20,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:00:20,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:00:20,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:00:20,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:00:20,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:00:20,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:00:20,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:00:20,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:00:20,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:00:20,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:00:20,105 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:00:20,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:00:20,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:00:20,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:00:20,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:00:20,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:00:20,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 15:00:20,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f91123d03/2c058c99a64b4a428a27bab359d3d736/FLAG5ac8e12c9 [2020-10-13 15:00:21,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:00:21,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 15:00:21,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f91123d03/2c058c99a64b4a428a27bab359d3d736/FLAG5ac8e12c9 [2020-10-13 15:00:21,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f91123d03/2c058c99a64b4a428a27bab359d3d736 [2020-10-13 15:00:21,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:00:21,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:00:21,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:00:21,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:00:21,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:00:21,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:00:21" (1/1) ... [2020-10-13 15:00:21,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1865218a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:21, skipping insertion in model container [2020-10-13 15:00:21,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:00:21" (1/1) ... [2020-10-13 15:00:21,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:00:21,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:00:21,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:00:21,866 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:00:22,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:00:22,037 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:00:22,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22 WrapperNode [2020-10-13 15:00:22,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:00:22,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:00:22,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:00:22,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:00:22,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (1/1) ... [2020-10-13 15:00:22,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (1/1) ... [2020-10-13 15:00:22,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (1/1) ... [2020-10-13 15:00:22,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (1/1) ... [2020-10-13 15:00:22,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (1/1) ... [2020-10-13 15:00:22,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (1/1) ... [2020-10-13 15:00:22,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (1/1) ... [2020-10-13 15:00:22,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:00:22,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:00:22,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:00:22,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:00:22,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (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 [2020-10-13 15:00:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:00:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:00:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:00:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:00:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:00:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:00:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 15:00:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:00:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:00:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:00:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:00:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:00:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:00:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:00:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:00:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:00:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:00:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:00:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:00:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:00:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:00:23,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:00:23,638 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:00:23,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:00:23 BoogieIcfgContainer [2020-10-13 15:00:23,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:00:23,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:00:23,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:00:23,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:00:23,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:00:21" (1/3) ... [2020-10-13 15:00:23,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc4bf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:00:23, skipping insertion in model container [2020-10-13 15:00:23,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:00:22" (2/3) ... [2020-10-13 15:00:23,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc4bf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:00:23, skipping insertion in model container [2020-10-13 15:00:23,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:00:23" (3/3) ... [2020-10-13 15:00:23,653 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 15:00:23,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:00:23,672 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:00:23,686 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:00:23,710 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:00:23,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:00:23,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:00:23,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:00:23,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:00:23,711 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:00:23,711 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:00:23,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:00:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states. [2020-10-13 15:00:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 15:00:23,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:23,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:23,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1531384802, now seen corresponding path program 1 times [2020-10-13 15:00:23,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:23,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224424387] [2020-10-13 15:00:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:29,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:29,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 15:00:29,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:00:29,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 15:00:29,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 15:00:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:00:29,628 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:00:29,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:29,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:29,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:29,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:00:29,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:29,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224424387] [2020-10-13 15:00:29,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:29,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:29,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760423910] [2020-10-13 15:00:29,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:29,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:29,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:29,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:29,736 INFO L87 Difference]: Start difference. First operand 349 states. Second operand 5 states. [2020-10-13 15:00:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:32,687 INFO L93 Difference]: Finished difference Result 1006 states and 1767 transitions. [2020-10-13 15:00:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:00:32,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 15:00:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:32,720 INFO L225 Difference]: With dead ends: 1006 [2020-10-13 15:00:32,720 INFO L226 Difference]: Without dead ends: 662 [2020-10-13 15:00:32,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-10-13 15:00:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 660. [2020-10-13 15:00:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2020-10-13 15:00:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 961 transitions. [2020-10-13 15:00:32,843 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 961 transitions. Word has length 159 [2020-10-13 15:00:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:32,844 INFO L479 AbstractCegarLoop]: Abstraction has 660 states and 961 transitions. [2020-10-13 15:00:32,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 961 transitions. [2020-10-13 15:00:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 15:00:32,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:32,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:32,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:00:32,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:32,852 INFO L82 PathProgramCache]: Analyzing trace with hash -929716176, now seen corresponding path program 1 times [2020-10-13 15:00:32,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:32,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976558988] [2020-10-13 15:00:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 15:00:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:00:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 15:00:37,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:00:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:00:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:00:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:00:38,202 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:00:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:38,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:38,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:38,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:38,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:00:38,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:38,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976558988] [2020-10-13 15:00:38,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:38,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:00:38,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303124275] [2020-10-13 15:00:38,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:00:38,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:38,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:00:38,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:38,256 INFO L87 Difference]: Start difference. First operand 660 states and 961 transitions. Second operand 4 states. [2020-10-13 15:00:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:40,200 INFO L93 Difference]: Finished difference Result 1934 states and 2813 transitions. [2020-10-13 15:00:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:00:40,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-13 15:00:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:40,211 INFO L225 Difference]: With dead ends: 1934 [2020-10-13 15:00:40,211 INFO L226 Difference]: Without dead ends: 1306 [2020-10-13 15:00:40,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:00:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2020-10-13 15:00:40,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 662. [2020-10-13 15:00:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-13 15:00:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 963 transitions. [2020-10-13 15:00:40,263 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 963 transitions. Word has length 160 [2020-10-13 15:00:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:40,264 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 963 transitions. [2020-10-13 15:00:40,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:00:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 963 transitions. [2020-10-13 15:00:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 15:00:40,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:40,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:40,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:00:40,269 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1272265085, now seen corresponding path program 1 times [2020-10-13 15:00:40,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:40,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061173379] [2020-10-13 15:00:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:40,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:45,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:45,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 15:00:45,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:00:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 15:00:45,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 15:00:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:00:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:45,821 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:00:45,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:45,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:45,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:45,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 15:00:45,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:00:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:45,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061173379] [2020-10-13 15:00:45,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:45,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:45,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70354449] [2020-10-13 15:00:45,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:45,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:45,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:45,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:45,963 INFO L87 Difference]: Start difference. First operand 662 states and 963 transitions. Second operand 5 states. [2020-10-13 15:00:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:47,641 INFO L93 Difference]: Finished difference Result 1306 states and 1901 transitions. [2020-10-13 15:00:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:47,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 15:00:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:47,647 INFO L225 Difference]: With dead ends: 1306 [2020-10-13 15:00:47,647 INFO L226 Difference]: Without dead ends: 662 [2020-10-13 15:00:47,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-10-13 15:00:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 661. [2020-10-13 15:00:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-13 15:00:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 960 transitions. [2020-10-13 15:00:47,702 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 960 transitions. Word has length 161 [2020-10-13 15:00:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:47,702 INFO L479 AbstractCegarLoop]: Abstraction has 661 states and 960 transitions. [2020-10-13 15:00:47,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 960 transitions. [2020-10-13 15:00:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 15:00:47,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:47,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:47,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:00:47,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:47,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:47,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1851547073, now seen corresponding path program 1 times [2020-10-13 15:00:47,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:47,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463265324] [2020-10-13 15:00:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:48,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:52,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:52,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 15:00:52,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:00:52,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:00:52,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:00:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:00:52,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 15:00:52,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:53,159 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:00:53,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:00:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:00:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:00:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:00:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:00:53,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:00:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:00:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:00:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:00:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:00:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:00:53,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463265324] [2020-10-13 15:00:53,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:00:53,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:00:53,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945125341] [2020-10-13 15:00:53,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:00:53,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:00:53,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:00:53,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:00:53,224 INFO L87 Difference]: Start difference. First operand 661 states and 960 transitions. Second operand 5 states. [2020-10-13 15:00:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:00:55,318 INFO L93 Difference]: Finished difference Result 1613 states and 2337 transitions. [2020-10-13 15:00:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:00:55,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 15:00:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:00:55,325 INFO L225 Difference]: With dead ends: 1613 [2020-10-13 15:00:55,325 INFO L226 Difference]: Without dead ends: 975 [2020-10-13 15:00:55,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:00:55,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-13 15:00:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2020-10-13 15:00:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-10-13 15:00:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1395 transitions. [2020-10-13 15:00:55,387 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1395 transitions. Word has length 161 [2020-10-13 15:00:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:00:55,390 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1395 transitions. [2020-10-13 15:00:55,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:00:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1395 transitions. [2020-10-13 15:00:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-13 15:00:55,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:00:55,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:00:55,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:00:55,398 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:00:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:00:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1641486621, now seen corresponding path program 1 times [2020-10-13 15:00:55,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:00:55,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263019208] [2020-10-13 15:00:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:00:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:00:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:00:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:00,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:00,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 15:01:00,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:01:00,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:01:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:01:00,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:00,675 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:00,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:00,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:00,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:00,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:00,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263019208] [2020-10-13 15:01:00,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:00,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:00,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321121473] [2020-10-13 15:01:00,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:00,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:00,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:00,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:00,723 INFO L87 Difference]: Start difference. First operand 973 states and 1395 transitions. Second operand 4 states. [2020-10-13 15:01:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:02,665 INFO L93 Difference]: Finished difference Result 2154 states and 3175 transitions. [2020-10-13 15:01:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:02,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-13 15:01:02,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:02,680 INFO L225 Difference]: With dead ends: 2154 [2020-10-13 15:01:02,680 INFO L226 Difference]: Without dead ends: 1367 [2020-10-13 15:01:02,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2020-10-13 15:01:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1197. [2020-10-13 15:01:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-10-13 15:01:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1759 transitions. [2020-10-13 15:01:02,741 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1759 transitions. Word has length 165 [2020-10-13 15:01:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:02,742 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1759 transitions. [2020-10-13 15:01:02,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1759 transitions. [2020-10-13 15:01:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 15:01:02,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:02,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:02,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:01:02,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1795762350, now seen corresponding path program 1 times [2020-10-13 15:01:02,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:02,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340058920] [2020-10-13 15:01:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:07,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:01:07,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:01:07,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 15:01:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 15:01:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:08,034 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:08,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:08,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340058920] [2020-10-13 15:01:08,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:08,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:08,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305805800] [2020-10-13 15:01:08,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:08,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:08,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:08,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:08,101 INFO L87 Difference]: Start difference. First operand 1197 states and 1759 transitions. Second operand 4 states. [2020-10-13 15:01:10,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:10,549 INFO L93 Difference]: Finished difference Result 2779 states and 4131 transitions. [2020-10-13 15:01:10,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:10,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-13 15:01:10,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:10,558 INFO L225 Difference]: With dead ends: 2779 [2020-10-13 15:01:10,558 INFO L226 Difference]: Without dead ends: 1868 [2020-10-13 15:01:10,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2020-10-13 15:01:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1866. [2020-10-13 15:01:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2020-10-13 15:01:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2722 transitions. [2020-10-13 15:01:10,645 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2722 transitions. Word has length 168 [2020-10-13 15:01:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:10,646 INFO L479 AbstractCegarLoop]: Abstraction has 1866 states and 2722 transitions. [2020-10-13 15:01:10,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:10,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2722 transitions. [2020-10-13 15:01:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 15:01:10,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:10,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:10,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:01:10,650 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:10,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1144197420, now seen corresponding path program 1 times [2020-10-13 15:01:10,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:10,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622824384] [2020-10-13 15:01:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:10,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:10,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:12,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 15:01:15,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:01:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:01:15,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:01:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 15:01:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:15,995 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:16,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:16,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:01:16,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:16,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622824384] [2020-10-13 15:01:16,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:16,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:16,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835338414] [2020-10-13 15:01:16,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:16,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:16,054 INFO L87 Difference]: Start difference. First operand 1866 states and 2722 transitions. Second operand 5 states. [2020-10-13 15:01:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:18,915 INFO L93 Difference]: Finished difference Result 5350 states and 7793 transitions. [2020-10-13 15:01:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:18,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 15:01:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:18,931 INFO L225 Difference]: With dead ends: 5350 [2020-10-13 15:01:18,931 INFO L226 Difference]: Without dead ends: 3541 [2020-10-13 15:01:18,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2020-10-13 15:01:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3539. [2020-10-13 15:01:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2020-10-13 15:01:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 5121 transitions. [2020-10-13 15:01:19,147 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 5121 transitions. Word has length 168 [2020-10-13 15:01:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:19,150 INFO L479 AbstractCegarLoop]: Abstraction has 3539 states and 5121 transitions. [2020-10-13 15:01:19,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 5121 transitions. [2020-10-13 15:01:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 15:01:19,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:19,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:19,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:01:19,156 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:19,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1604763966, now seen corresponding path program 1 times [2020-10-13 15:01:19,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:19,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295847086] [2020-10-13 15:01:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:19,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:19,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:19,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:19,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:20,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:23,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:24,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:24,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:24,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 15:01:24,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 15:01:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:01:24,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 15:01:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:01:24,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:24,409 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:24,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:24,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:24,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:01:24,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:24,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295847086] [2020-10-13 15:01:24,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:24,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:24,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356871276] [2020-10-13 15:01:24,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:24,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:24,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:24,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:24,439 INFO L87 Difference]: Start difference. First operand 3539 states and 5121 transitions. Second operand 4 states. [2020-10-13 15:01:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:27,144 INFO L93 Difference]: Finished difference Result 10413 states and 15092 transitions. [2020-10-13 15:01:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:27,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-13 15:01:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:27,172 INFO L225 Difference]: With dead ends: 10413 [2020-10-13 15:01:27,172 INFO L226 Difference]: Without dead ends: 6985 [2020-10-13 15:01:27,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6985 states. [2020-10-13 15:01:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6985 to 3545. [2020-10-13 15:01:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2020-10-13 15:01:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5127 transitions. [2020-10-13 15:01:27,433 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5127 transitions. Word has length 169 [2020-10-13 15:01:27,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:27,434 INFO L479 AbstractCegarLoop]: Abstraction has 3545 states and 5127 transitions. [2020-10-13 15:01:27,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:27,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5127 transitions. [2020-10-13 15:01:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 15:01:27,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:27,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:27,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:01:27,441 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1714071603, now seen corresponding path program 1 times [2020-10-13 15:01:27,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:27,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863629115] [2020-10-13 15:01:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:27,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:28,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:30,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:32,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 15:01:32,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 15:01:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 15:01:32,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:01:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 15:01:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:32,752 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:32,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:32,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:32,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:32,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:32,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:32,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863629115] [2020-10-13 15:01:32,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:32,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:32,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529278188] [2020-10-13 15:01:32,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:32,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:32,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:32,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:32,795 INFO L87 Difference]: Start difference. First operand 3545 states and 5127 transitions. Second operand 4 states. [2020-10-13 15:01:35,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:35,438 INFO L93 Difference]: Finished difference Result 9762 states and 14176 transitions. [2020-10-13 15:01:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:35,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-13 15:01:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:35,463 INFO L225 Difference]: With dead ends: 9762 [2020-10-13 15:01:35,464 INFO L226 Difference]: Without dead ends: 6816 [2020-10-13 15:01:35,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2020-10-13 15:01:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 6814. [2020-10-13 15:01:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6814 states. [2020-10-13 15:01:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 9740 transitions. [2020-10-13 15:01:35,814 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 9740 transitions. Word has length 170 [2020-10-13 15:01:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:35,815 INFO L479 AbstractCegarLoop]: Abstraction has 6814 states and 9740 transitions. [2020-10-13 15:01:35,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 9740 transitions. [2020-10-13 15:01:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 15:01:35,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:35,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:35,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:01:35,825 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:35,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1904844266, now seen corresponding path program 1 times [2020-10-13 15:01:35,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:35,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602809101] [2020-10-13 15:01:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:40,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:40,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 15:01:40,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:01:40,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:01:40,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:40,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:01:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:01:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:41,111 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:41,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:41,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:41,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:41,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:01:41,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:41,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602809101] [2020-10-13 15:01:41,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:41,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:41,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646726766] [2020-10-13 15:01:41,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:41,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:41,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:41,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:41,142 INFO L87 Difference]: Start difference. First operand 6814 states and 9740 transitions. Second operand 5 states. [2020-10-13 15:01:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:43,073 INFO L93 Difference]: Finished difference Result 14421 states and 20368 transitions. [2020-10-13 15:01:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:43,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 15:01:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:43,094 INFO L225 Difference]: With dead ends: 14421 [2020-10-13 15:01:43,094 INFO L226 Difference]: Without dead ends: 7280 [2020-10-13 15:01:43,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2020-10-13 15:01:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 7278. [2020-10-13 15:01:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7278 states. [2020-10-13 15:01:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 10195 transitions. [2020-10-13 15:01:43,386 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 10195 transitions. Word has length 170 [2020-10-13 15:01:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:43,387 INFO L479 AbstractCegarLoop]: Abstraction has 7278 states and 10195 transitions. [2020-10-13 15:01:43,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:43,387 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 10195 transitions. [2020-10-13 15:01:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 15:01:43,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:43,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:43,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:01:43,396 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:43,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1544204179, now seen corresponding path program 1 times [2020-10-13 15:01:43,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:43,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196835664] [2020-10-13 15:01:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:43,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:01:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:48,684 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:48,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:48,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:48,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:48,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:48,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196835664] [2020-10-13 15:01:48,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:48,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:01:48,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997580506] [2020-10-13 15:01:48,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:01:48,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:01:48,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:01:48,717 INFO L87 Difference]: Start difference. First operand 7278 states and 10195 transitions. Second operand 5 states. [2020-10-13 15:01:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:50,308 INFO L93 Difference]: Finished difference Result 13970 states and 19699 transitions. [2020-10-13 15:01:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:01:50,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-13 15:01:50,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:50,323 INFO L225 Difference]: With dead ends: 13970 [2020-10-13 15:01:50,323 INFO L226 Difference]: Without dead ends: 7019 [2020-10-13 15:01:50,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:01:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2020-10-13 15:01:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 7016. [2020-10-13 15:01:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2020-10-13 15:01:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 9872 transitions. [2020-10-13 15:01:50,775 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 9872 transitions. Word has length 170 [2020-10-13 15:01:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:50,776 INFO L479 AbstractCegarLoop]: Abstraction has 7016 states and 9872 transitions. [2020-10-13 15:01:50,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:01:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 9872 transitions. [2020-10-13 15:01:50,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 15:01:50,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:50,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:50,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:01:50,785 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:50,785 INFO L82 PathProgramCache]: Analyzing trace with hash 861019910, now seen corresponding path program 1 times [2020-10-13 15:01:50,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:50,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316333508] [2020-10-13 15:01:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:53,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:55,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:55,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 15:01:55,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:01:55,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:01:55,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:01:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:01:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:01:55,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:56,046 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:01:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:01:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:01:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:01:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:01:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:01:56,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316333508] [2020-10-13 15:01:56,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:01:56,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:01:56,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877707244] [2020-10-13 15:01:56,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:01:56,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:01:56,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:01:56,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:56,077 INFO L87 Difference]: Start difference. First operand 7016 states and 9872 transitions. Second operand 4 states. [2020-10-13 15:01:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:01:58,569 INFO L93 Difference]: Finished difference Result 17071 states and 24033 transitions. [2020-10-13 15:01:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:01:58,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-13 15:01:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:01:58,594 INFO L225 Difference]: With dead ends: 17071 [2020-10-13 15:01:58,595 INFO L226 Difference]: Without dead ends: 13868 [2020-10-13 15:01:58,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:01:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13868 states. [2020-10-13 15:01:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13868 to 7030. [2020-10-13 15:01:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7030 states. [2020-10-13 15:01:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 9886 transitions. [2020-10-13 15:01:59,052 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 9886 transitions. Word has length 171 [2020-10-13 15:01:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:01:59,052 INFO L479 AbstractCegarLoop]: Abstraction has 7030 states and 9886 transitions. [2020-10-13 15:01:59,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:01:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 9886 transitions. [2020-10-13 15:01:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:01:59,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:01:59,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:01:59,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:01:59,059 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:01:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:01:59,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1673144725, now seen corresponding path program 1 times [2020-10-13 15:01:59,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:01:59,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740715525] [2020-10-13 15:01:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:01:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:01:59,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:01:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:03,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:04,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 15:02:04,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:02:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:02:04,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:02:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:02:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:04,383 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:02:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:04,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:02:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:04,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740715525] [2020-10-13 15:02:04,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:04,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:04,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256289711] [2020-10-13 15:02:04,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:04,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:04,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:04,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:04,417 INFO L87 Difference]: Start difference. First operand 7030 states and 9886 transitions. Second operand 5 states. [2020-10-13 15:02:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:06,729 INFO L93 Difference]: Finished difference Result 19427 states and 27249 transitions. [2020-10-13 15:02:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:06,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 15:02:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:06,747 INFO L225 Difference]: With dead ends: 19427 [2020-10-13 15:02:06,747 INFO L226 Difference]: Without dead ends: 13426 [2020-10-13 15:02:06,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13426 states. [2020-10-13 15:02:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13426 to 7068. [2020-10-13 15:02:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-13 15:02:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 9924 transitions. [2020-10-13 15:02:07,199 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 9924 transitions. Word has length 172 [2020-10-13 15:02:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:07,199 INFO L479 AbstractCegarLoop]: Abstraction has 7068 states and 9924 transitions. [2020-10-13 15:02:07,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 9924 transitions. [2020-10-13 15:02:07,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:02:07,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:07,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:07,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:02:07,205 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:07,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:07,205 INFO L82 PathProgramCache]: Analyzing trace with hash -644358516, now seen corresponding path program 1 times [2020-10-13 15:02:07,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:07,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249420223] [2020-10-13 15:02:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 15:02:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:02:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:02:12,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:02:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:02:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:12,505 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:02:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:12,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:12,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:12,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:12,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:12,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:12,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:12,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249420223] [2020-10-13 15:02:12,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:12,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:12,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212339111] [2020-10-13 15:02:12,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:12,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:12,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:12,549 INFO L87 Difference]: Start difference. First operand 7068 states and 9924 transitions. Second operand 5 states. [2020-10-13 15:02:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:14,106 INFO L93 Difference]: Finished difference Result 8746 states and 12273 transitions. [2020-10-13 15:02:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:14,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 15:02:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:14,112 INFO L225 Difference]: With dead ends: 8746 [2020-10-13 15:02:14,112 INFO L226 Difference]: Without dead ends: 5516 [2020-10-13 15:02:14,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:14,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2020-10-13 15:02:14,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5496. [2020-10-13 15:02:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5496 states. [2020-10-13 15:02:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 7709 transitions. [2020-10-13 15:02:14,388 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 7709 transitions. Word has length 172 [2020-10-13 15:02:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:14,388 INFO L479 AbstractCegarLoop]: Abstraction has 5496 states and 7709 transitions. [2020-10-13 15:02:14,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 7709 transitions. [2020-10-13 15:02:14,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 15:02:14,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:14,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:14,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:02:14,392 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:14,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:14,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2098574995, now seen corresponding path program 1 times [2020-10-13 15:02:14,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:14,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175569456] [2020-10-13 15:02:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:19,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:19,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 15:02:19,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:02:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:02:19,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:02:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 15:02:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:02:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:19,668 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:02:19,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:19,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:19,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175569456] [2020-10-13 15:02:19,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:19,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:02:19,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860136264] [2020-10-13 15:02:19,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:02:19,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:19,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:02:19,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:19,703 INFO L87 Difference]: Start difference. First operand 5496 states and 7709 transitions. Second operand 4 states. [2020-10-13 15:02:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:21,956 INFO L93 Difference]: Finished difference Result 11793 states and 17023 transitions. [2020-10-13 15:02:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:02:21,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-13 15:02:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:21,964 INFO L225 Difference]: With dead ends: 11793 [2020-10-13 15:02:21,964 INFO L226 Difference]: Without dead ends: 7802 [2020-10-13 15:02:21,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7802 states. [2020-10-13 15:02:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7802 to 7094. [2020-10-13 15:02:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7094 states. [2020-10-13 15:02:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7094 states to 7094 states and 10207 transitions. [2020-10-13 15:02:22,351 INFO L78 Accepts]: Start accepts. Automaton has 7094 states and 10207 transitions. Word has length 172 [2020-10-13 15:02:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:22,352 INFO L479 AbstractCegarLoop]: Abstraction has 7094 states and 10207 transitions. [2020-10-13 15:02:22,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:02:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7094 states and 10207 transitions. [2020-10-13 15:02:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 15:02:22,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:22,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:22,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:02:22,356 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:22,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1381027145, now seen corresponding path program 1 times [2020-10-13 15:02:22,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:22,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331545652] [2020-10-13 15:02:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:24,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:27,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 15:02:27,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:02:27,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:02:27,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:02:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:02:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 15:02:27,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:27,700 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:02:27,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:27,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:27,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:27,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:02:27,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:27,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331545652] [2020-10-13 15:02:27,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:27,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:02:27,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13544761] [2020-10-13 15:02:27,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:02:27,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:27,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:02:27,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:27,733 INFO L87 Difference]: Start difference. First operand 7094 states and 10207 transitions. Second operand 4 states. [2020-10-13 15:02:30,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:30,192 INFO L93 Difference]: Finished difference Result 16929 states and 25080 transitions. [2020-10-13 15:02:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:02:30,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-13 15:02:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:30,203 INFO L225 Difference]: With dead ends: 16929 [2020-10-13 15:02:30,203 INFO L226 Difference]: Without dead ends: 10988 [2020-10-13 15:02:30,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10988 states. [2020-10-13 15:02:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10988 to 10066. [2020-10-13 15:02:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10066 states. [2020-10-13 15:02:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 14895 transitions. [2020-10-13 15:02:30,853 INFO L78 Accepts]: Start accepts. Automaton has 10066 states and 14895 transitions. Word has length 174 [2020-10-13 15:02:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:30,854 INFO L479 AbstractCegarLoop]: Abstraction has 10066 states and 14895 transitions. [2020-10-13 15:02:30,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:02:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 10066 states and 14895 transitions. [2020-10-13 15:02:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 15:02:30,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:30,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:30,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:02:30,858 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:30,859 INFO L82 PathProgramCache]: Analyzing trace with hash 792383317, now seen corresponding path program 1 times [2020-10-13 15:02:30,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:30,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246421728] [2020-10-13 15:02:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:30,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:31,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:33,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:35,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:02:35,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:02:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:02:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 15:02:35,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:02:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:36,172 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:02:36,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:36,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:36,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:36,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:36,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:36,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:36,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246421728] [2020-10-13 15:02:36,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:36,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:36,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048561981] [2020-10-13 15:02:36,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:36,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:36,210 INFO L87 Difference]: Start difference. First operand 10066 states and 14895 transitions. Second operand 5 states. [2020-10-13 15:02:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:39,442 INFO L93 Difference]: Finished difference Result 26691 states and 40535 transitions. [2020-10-13 15:02:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:39,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 15:02:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:39,464 INFO L225 Difference]: With dead ends: 26691 [2020-10-13 15:02:39,464 INFO L226 Difference]: Without dead ends: 18659 [2020-10-13 15:02:39,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18659 states. [2020-10-13 15:02:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18659 to 10567. [2020-10-13 15:02:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10567 states. [2020-10-13 15:02:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 15482 transitions. [2020-10-13 15:02:40,170 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 15482 transitions. Word has length 175 [2020-10-13 15:02:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:40,171 INFO L479 AbstractCegarLoop]: Abstraction has 10567 states and 15482 transitions. [2020-10-13 15:02:40,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 15482 transitions. [2020-10-13 15:02:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 15:02:40,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:40,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:40,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:02:40,176 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:40,176 INFO L82 PathProgramCache]: Analyzing trace with hash -752360914, now seen corresponding path program 1 times [2020-10-13 15:02:40,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:40,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794383682] [2020-10-13 15:02:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:45,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:45,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:45,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 15:02:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 15:02:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 15:02:45,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:45,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:02:45,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:02:45,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 15:02:45,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:45,535 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:02:45,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:45,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:45,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:45,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:45,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:02:45,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:45,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794383682] [2020-10-13 15:02:45,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:45,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:02:45,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111715657] [2020-10-13 15:02:45,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:02:45,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:45,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:02:45,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:02:45,576 INFO L87 Difference]: Start difference. First operand 10567 states and 15482 transitions. Second operand 5 states. [2020-10-13 15:02:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:48,421 INFO L93 Difference]: Finished difference Result 17590 states and 25890 transitions. [2020-10-13 15:02:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:02:48,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 15:02:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:48,431 INFO L225 Difference]: With dead ends: 17590 [2020-10-13 15:02:48,431 INFO L226 Difference]: Without dead ends: 9669 [2020-10-13 15:02:48,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:02:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2020-10-13 15:02:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 9621. [2020-10-13 15:02:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9621 states. [2020-10-13 15:02:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9621 states to 9621 states and 14111 transitions. [2020-10-13 15:02:49,044 INFO L78 Accepts]: Start accepts. Automaton has 9621 states and 14111 transitions. Word has length 175 [2020-10-13 15:02:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:49,044 INFO L479 AbstractCegarLoop]: Abstraction has 9621 states and 14111 transitions. [2020-10-13 15:02:49,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:02:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 9621 states and 14111 transitions. [2020-10-13 15:02:49,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 15:02:49,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:49,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:49,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:02:49,049 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2073149893, now seen corresponding path program 1 times [2020-10-13 15:02:49,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:49,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283085482] [2020-10-13 15:02:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:49,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:51,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:52,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 15:02:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:54,320 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:02:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:02:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:54,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:02:54,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:02:54,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:02:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:02:54,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:02:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:02:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:02:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:02:54,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:02:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:02:54,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283085482] [2020-10-13 15:02:54,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:02:54,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:02:54,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603815054] [2020-10-13 15:02:54,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:02:54,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:02:54,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:02:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:54,363 INFO L87 Difference]: Start difference. First operand 9621 states and 14111 transitions. Second operand 4 states. [2020-10-13 15:02:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:02:57,912 INFO L93 Difference]: Finished difference Result 25594 states and 37853 transitions. [2020-10-13 15:02:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:02:57,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-13 15:02:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:02:57,931 INFO L225 Difference]: With dead ends: 25594 [2020-10-13 15:02:57,931 INFO L226 Difference]: Without dead ends: 17164 [2020-10-13 15:02:57,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:02:57,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17164 states. [2020-10-13 15:02:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17164 to 17162. [2020-10-13 15:02:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17162 states. [2020-10-13 15:02:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17162 states to 17162 states and 24932 transitions. [2020-10-13 15:02:59,192 INFO L78 Accepts]: Start accepts. Automaton has 17162 states and 24932 transitions. Word has length 177 [2020-10-13 15:02:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:02:59,192 INFO L479 AbstractCegarLoop]: Abstraction has 17162 states and 24932 transitions. [2020-10-13 15:02:59,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:02:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17162 states and 24932 transitions. [2020-10-13 15:02:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 15:02:59,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:02:59,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:02:59,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:02:59,202 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:02:59,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:02:59,202 INFO L82 PathProgramCache]: Analyzing trace with hash 209424190, now seen corresponding path program 1 times [2020-10-13 15:02:59,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:02:59,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251413915] [2020-10-13 15:02:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:02:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:02:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:02:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:03,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 15:03:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 15:03:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:03:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:03:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:03:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:04,505 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:03:04,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:04,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:04,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:03:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:04,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251413915] [2020-10-13 15:03:04,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:04,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:04,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290841931] [2020-10-13 15:03:04,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:04,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:04,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:04,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:04,538 INFO L87 Difference]: Start difference. First operand 17162 states and 24932 transitions. Second operand 5 states. [2020-10-13 15:03:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:08,165 INFO L93 Difference]: Finished difference Result 38826 states and 56634 transitions. [2020-10-13 15:03:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:08,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 15:03:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:08,191 INFO L225 Difference]: With dead ends: 38826 [2020-10-13 15:03:08,192 INFO L226 Difference]: Without dead ends: 26296 [2020-10-13 15:03:08,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26296 states. [2020-10-13 15:03:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26296 to 17150. [2020-10-13 15:03:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17150 states. [2020-10-13 15:03:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17150 states to 17150 states and 24914 transitions. [2020-10-13 15:03:09,445 INFO L78 Accepts]: Start accepts. Automaton has 17150 states and 24914 transitions. Word has length 177 [2020-10-13 15:03:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:09,445 INFO L479 AbstractCegarLoop]: Abstraction has 17150 states and 24914 transitions. [2020-10-13 15:03:09,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 17150 states and 24914 transitions. [2020-10-13 15:03:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 15:03:09,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:09,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:09,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:03:09,452 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:09,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1340139813, now seen corresponding path program 1 times [2020-10-13 15:03:09,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:09,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056060447] [2020-10-13 15:03:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:09,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:14,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 15:03:14,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:03:14,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:03:14,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:14,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:03:14,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:03:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:03:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:14,712 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:03:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:14,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:14,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:03:14,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:14,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056060447] [2020-10-13 15:03:14,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:14,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:03:14,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371180789] [2020-10-13 15:03:14,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:03:14,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:14,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:03:14,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:14,742 INFO L87 Difference]: Start difference. First operand 17150 states and 24914 transitions. Second operand 4 states. [2020-10-13 15:03:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:17,766 INFO L93 Difference]: Finished difference Result 27012 states and 39237 transitions. [2020-10-13 15:03:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:03:17,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-13 15:03:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:17,790 INFO L225 Difference]: With dead ends: 27012 [2020-10-13 15:03:17,790 INFO L226 Difference]: Without dead ends: 21486 [2020-10-13 15:03:17,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:03:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21486 states. [2020-10-13 15:03:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21486 to 17035. [2020-10-13 15:03:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17035 states. [2020-10-13 15:03:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17035 states to 17035 states and 24781 transitions. [2020-10-13 15:03:19,962 INFO L78 Accepts]: Start accepts. Automaton has 17035 states and 24781 transitions. Word has length 178 [2020-10-13 15:03:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:19,962 INFO L479 AbstractCegarLoop]: Abstraction has 17035 states and 24781 transitions. [2020-10-13 15:03:19,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:03:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 17035 states and 24781 transitions. [2020-10-13 15:03:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 15:03:19,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:19,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:19,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:03:19,969 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:19,970 INFO L82 PathProgramCache]: Analyzing trace with hash 366658922, now seen corresponding path program 1 times [2020-10-13 15:03:19,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:19,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540381711] [2020-10-13 15:03:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:25,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:25,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 15:03:25,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:03:25,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:03:25,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 15:03:25,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:03:25,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:25,276 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:03:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:25,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540381711] [2020-10-13 15:03:25,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:25,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:25,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892349543] [2020-10-13 15:03:25,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:25,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:25,310 INFO L87 Difference]: Start difference. First operand 17035 states and 24781 transitions. Second operand 5 states. [2020-10-13 15:03:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:27,668 INFO L93 Difference]: Finished difference Result 26557 states and 38804 transitions. [2020-10-13 15:03:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:27,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 15:03:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:27,685 INFO L225 Difference]: With dead ends: 26557 [2020-10-13 15:03:27,686 INFO L226 Difference]: Without dead ends: 14209 [2020-10-13 15:03:27,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:03:27,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14209 states. [2020-10-13 15:03:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14209 to 14203. [2020-10-13 15:03:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14203 states. [2020-10-13 15:03:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14203 states to 14203 states and 20621 transitions. [2020-10-13 15:03:28,803 INFO L78 Accepts]: Start accepts. Automaton has 14203 states and 20621 transitions. Word has length 179 [2020-10-13 15:03:28,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:28,803 INFO L479 AbstractCegarLoop]: Abstraction has 14203 states and 20621 transitions. [2020-10-13 15:03:28,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 14203 states and 20621 transitions. [2020-10-13 15:03:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 15:03:28,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:28,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:28,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:03:28,808 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:28,809 INFO L82 PathProgramCache]: Analyzing trace with hash 419741213, now seen corresponding path program 1 times [2020-10-13 15:03:28,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:28,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361741789] [2020-10-13 15:03:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:33,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:33,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 15:03:33,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:03:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:03:33,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 15:03:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:03:33,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:34,118 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:03:34,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:34,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361741789] [2020-10-13 15:03:34,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:34,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:34,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370182156] [2020-10-13 15:03:34,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:34,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:34,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:34,156 INFO L87 Difference]: Start difference. First operand 14203 states and 20621 transitions. Second operand 5 states. [2020-10-13 15:03:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:38,243 INFO L93 Difference]: Finished difference Result 37297 states and 55578 transitions. [2020-10-13 15:03:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:38,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-13 15:03:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:38,272 INFO L225 Difference]: With dead ends: 37297 [2020-10-13 15:03:38,273 INFO L226 Difference]: Without dead ends: 26477 [2020-10-13 15:03:38,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:03:38,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26477 states. [2020-10-13 15:03:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26477 to 15573. [2020-10-13 15:03:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15573 states. [2020-10-13 15:03:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15573 states to 15573 states and 22227 transitions. [2020-10-13 15:03:39,682 INFO L78 Accepts]: Start accepts. Automaton has 15573 states and 22227 transitions. Word has length 182 [2020-10-13 15:03:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:39,683 INFO L479 AbstractCegarLoop]: Abstraction has 15573 states and 22227 transitions. [2020-10-13 15:03:39,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 15573 states and 22227 transitions. [2020-10-13 15:03:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-13 15:03:39,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:39,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:39,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:03:39,688 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:39,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1079484397, now seen corresponding path program 1 times [2020-10-13 15:03:39,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:39,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031381250] [2020-10-13 15:03:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:44,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:44,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 15:03:44,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:03:44,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:03:44,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:03:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 15:03:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:45,030 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:03:45,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:45,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:45,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:45,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:45,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:03:45,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:45,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:45,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031381250] [2020-10-13 15:03:45,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:45,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:45,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642245649] [2020-10-13 15:03:45,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:45,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:45,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:45,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:45,078 INFO L87 Difference]: Start difference. First operand 15573 states and 22227 transitions. Second operand 5 states. [2020-10-13 15:03:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:48,800 INFO L93 Difference]: Finished difference Result 20546 states and 29332 transitions. [2020-10-13 15:03:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:48,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-13 15:03:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:48,820 INFO L225 Difference]: With dead ends: 20546 [2020-10-13 15:03:48,820 INFO L226 Difference]: Without dead ends: 15575 [2020-10-13 15:03:48,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:03:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15575 states. [2020-10-13 15:03:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15575 to 15513. [2020-10-13 15:03:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15513 states. [2020-10-13 15:03:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15513 states to 15513 states and 22144 transitions. [2020-10-13 15:03:50,176 INFO L78 Accepts]: Start accepts. Automaton has 15513 states and 22144 transitions. Word has length 182 [2020-10-13 15:03:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:03:50,177 INFO L479 AbstractCegarLoop]: Abstraction has 15513 states and 22144 transitions. [2020-10-13 15:03:50,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:03:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 15513 states and 22144 transitions. [2020-10-13 15:03:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 15:03:50,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:03:50,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:03:50,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:03:50,182 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:03:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:03:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash 581710168, now seen corresponding path program 1 times [2020-10-13 15:03:50,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:03:50,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499771423] [2020-10-13 15:03:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:03:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:50,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:50,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:53,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:55,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 15:03:55,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:03:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:03:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:03:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:03:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 15:03:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:55,501 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:03:55,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:03:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:03:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:03:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:03:55,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:03:55,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:03:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:03:55,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:03:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:03:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:03:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:03:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:03:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:03:55,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499771423] [2020-10-13 15:03:55,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:03:55,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:03:55,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390990168] [2020-10-13 15:03:55,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:03:55,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:03:55,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:03:55,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:03:55,550 INFO L87 Difference]: Start difference. First operand 15513 states and 22144 transitions. Second operand 5 states. [2020-10-13 15:03:59,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:03:59,428 INFO L93 Difference]: Finished difference Result 24973 states and 35880 transitions. [2020-10-13 15:03:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:03:59,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-13 15:03:59,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:03:59,441 INFO L225 Difference]: With dead ends: 24973 [2020-10-13 15:03:59,442 INFO L226 Difference]: Without dead ends: 14426 [2020-10-13 15:03:59,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:03:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14426 states. [2020-10-13 15:04:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14426 to 14269. [2020-10-13 15:04:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14269 states. [2020-10-13 15:04:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14269 states to 14269 states and 20336 transitions. [2020-10-13 15:04:00,617 INFO L78 Accepts]: Start accepts. Automaton has 14269 states and 20336 transitions. Word has length 184 [2020-10-13 15:04:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:00,617 INFO L479 AbstractCegarLoop]: Abstraction has 14269 states and 20336 transitions. [2020-10-13 15:04:00,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:04:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 14269 states and 20336 transitions. [2020-10-13 15:04:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 15:04:00,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:00,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:00,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:04:00,624 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:00,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1451948845, now seen corresponding path program 1 times [2020-10-13 15:04:00,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:00,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251713196] [2020-10-13 15:04:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:01,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:01,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:05,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:05,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 15:04:05,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:04:05,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:04:05,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:05,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:04:05,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 15:04:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:04:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:05,929 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 15:04:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:05,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:05,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:05,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:04:05,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:05,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:05,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251713196] [2020-10-13 15:04:05,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:05,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:04:05,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497474378] [2020-10-13 15:04:05,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:04:05,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:05,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:04:05,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:05,966 INFO L87 Difference]: Start difference. First operand 14269 states and 20336 transitions. Second operand 5 states. [2020-10-13 15:04:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:10,321 INFO L93 Difference]: Finished difference Result 35714 states and 52623 transitions. [2020-10-13 15:04:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:04:10,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-13 15:04:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:10,345 INFO L225 Difference]: With dead ends: 35714 [2020-10-13 15:04:10,345 INFO L226 Difference]: Without dead ends: 26053 [2020-10-13 15:04:10,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:04:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26053 states. [2020-10-13 15:04:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26053 to 16320. [2020-10-13 15:04:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16320 states. [2020-10-13 15:04:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16320 states to 16320 states and 22733 transitions. [2020-10-13 15:04:11,720 INFO L78 Accepts]: Start accepts. Automaton has 16320 states and 22733 transitions. Word has length 186 [2020-10-13 15:04:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:11,721 INFO L479 AbstractCegarLoop]: Abstraction has 16320 states and 22733 transitions. [2020-10-13 15:04:11,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:04:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 16320 states and 22733 transitions. [2020-10-13 15:04:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 15:04:11,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:11,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:11,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:04:11,727 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1022447131, now seen corresponding path program 1 times [2020-10-13 15:04:11,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:11,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080022207] [2020-10-13 15:04:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:11,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking...